msm-4.14

mirror of https://github.com/rd-stuffs/msm-4.14.git synced 2025-02-20 11:45:48 +08:00

Author	SHA1	Message	Date
Christoph Hellwig	2471bb1300	block: add a poll_fn callback to struct request_queue That we we can also poll non blk-mq queues. Mostly needed for the NVMe multipath code, but could also be useful elsewhere. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: azrim <mirzaspc@gmail.com>	2022-06-30 14:12:16 +00:00
azrim	e9e83ae080	Merge remote-tracking branch 'google/upstream-f2fs-stable-linux-4.14.y' into sheesh * google/upstream-f2fs-stable-linux-4.14.y: f2fs: fix to do sanity check on .cp_pack_total_block_count f2fs: make gc_urgent and gc_segment_mode sysfs node readable f2fs: use aggressive GC policy during f2fs_disable_checkpoint() f2fs: fix compressed file start atomic write may cause data corruption f2fs: initialize sbi->gc_mode explicitly f2fs: introduce gc_urgent_mid mode f2fs: compress: fix to print raw data size in error path of lz4 decompression f2fs: remove redundant parameter judgment f2fs: use spin_lock to avoid hang f2fs: don't get FREEZE lock in f2fs_evict_inode in frozen fs f2fs: remove unnecessary read for F2FS_FITS_IN_INODE f2fs: fix to do sanity check on curseg->alloc_type f2fs: fix to avoid potential deadlock f2fs: quota: fix loop condition at f2fs_quota_sync() f2fs: Restore rwsem lockdep support f2fs: fix missing free nid in f2fs_handle_failed_inode f2fs: add a way to limit roll forward recovery time f2fs: introduce F2FS_IPU_HONOR_OPU_WRITE ipu policy f2fs: adjust readahead block number during recovery f2fs: fix to unlock page correctly in error path of is_alive() f2fs: expose discard related parameters in sysfs f2fs: move discard parameters into discard_cmd_control f2fs: fix to enable ATGC correctly via gc_idle sysfs interface f2fs: move f2fs to use reader-unfair rwsems f2fs: do not allow partial truncation on pinned file f2fs: remove redunant invalidate compress pages f2fs: Simplify bool conversion f2fs: don't drop compressed page cache in .{invalidate,release}page f2fs: fix to reserve space for IO align feature f2fs: fix to check available space of CP area correctly in update_ckpt_flags() f2fs: support fault injection to f2fs_trylock_op() f2fs: clean up __find_inline_xattr() with __find_xattr() f2fs: fix to do sanity check on last xattr entry in __f2fs_setxattr() f2fs: do not bother checkpoint by f2fs_get_node_info f2fs: avoid down_write on nat_tree_lock during checkpoint f2fs: compress: fix potential deadlock of compress file f2fs: avoid EINVAL by SBI_NEED_FSCK when pinning a file f2fs: add gc_urgent_high_remaining sysfs node f2fs: fix to do sanity check in is_alive() f2fs: fix to avoid panic in is_alive() if metadata is inconsistent f2fs: fix to do sanity check on inode type during garbage collection f2fs: avoid duplicate call of mark_inode_dirty f2fs: fix remove page failed in invalidate compress pages f2fs: fix the f2fs_file_write_iter tracepoint f2fs: do not expose unwritten blocks to user by DIO f2fs: reduce indentation in f2fs_file_write_iter() f2fs: rework write preallocations f2fs: compress: reduce one page array alloc and free when write compressed page f2fs: show number of pending discard commands f2fs: check nr_pages for readahead f2fs: fix UAF in f2fs_available_free_memory f2fs: invalidate META_MAPPING before IPU/DIO write f2fs: support fault injection for dquot_initialize() f2fs: fix incorrect return value in f2fs_sanity_check_ckpt() f2fs: compress: disallow disabling compress on non-empty compressed file f2fs: compress: fix overwrite may reduce compress ratio unproperly f2fs: multidevice: support direct IO f2fs: introduce fragment allocation mode mount option f2fs: include non-compressed blocks in compr_written_block f2fs: fix wrong condition to trigger background checkpoint correctly f2fs: fix to use WHINT_MODE f2fs: fix up f2fs_lookup tracepoints f2fs: set SBI_NEED_FSCK flag when inconsistent node block found f2fs: introduce excess_dirty_threshold() f2fs: avoid attaching SB_ACTIVE flag during mount f2fs: quota: fix potential deadlock f2fs: should use GFP_NOFS for directory inodes f2fs: should put a page beyond EOF when preparing a write f2fs: deallocate compressed pages when error happens f2fs: enable realtime discard iff device supports discard f2fs: guarantee to write dirty data when enabling checkpoint back f2fs: fix to unmap pages from userspace process in punch_hole() f2fs: fix unexpected ENOENT comes from f2fs_map_blocks() f2fs: fix to account missing .skipped_gc_rwsem f2fs: adjust unlock order for cleanup f2fs: Don't create discard thread when device doesn't support realtime discard f2fs: rebuild nat_bits during umount f2fs: introduce periodic iostat io latency traces f2fs: separate out iostat feature f2fs: compress: do sanity check on cluster f2fs: fix description about main_blkaddr node f2fs: convert S_IRUGO to 0444 f2fs: fix to keep compatibility of fault injection interface f2fs: support fault injection for f2fs_kmem_cache_alloc() f2fs: compress: allow write compress released file after truncate to zero f2fs: correct comment in segment.h f2fs: improve sbi status info in debugfs/f2fs/status f2fs: compress: avoid duplicate counting of valid blocks when read compressed file f2fs: fix to do sanity check for sb/cp fields correctly f2fs: avoid unneeded memory allocation in __add_ino_entry() f2fs: extent cache: support unaligned extent f2fs: Kconfig: clean up config options about compression f2fs: reduce the scope of setting fsck tag when de->name_len is zero f2fs: fix to stop filesystem update once CP failed f2fs: introduce discard_unit mount option f2fs: fix min_seq_blocks can not make sense in some scenes. f2fs: fix to force keeping write barrier for strict fsync mode f2fs: fix wrong checkpoint_changed value in f2fs_remount() f2fs: show sbi status in debugfs/f2fs/status f2fs: turn back remapped address in compressed page endio f2fs: change fiemap way in printing compression chunk f2fs: do not submit NEW_ADDR to read node block f2fs: compress: remove unneeded read when rewrite whole cluster f2fs: don't sleep while grabing nat_tree_lock f2fs: remove allow_outplace_dio() f2fs: make f2fs_write_failed() take struct inode f2fs: quota: fix potential deadlock f2fs: let's keep writing IOs on SBI_NEED_FSCK f2fs: Revert "f2fs: Fix indefinite loop in f2fs_gc() v1" f2fs: avoid to create an empty string as the extension_list f2fs: compress: fix to set zstd compress level correctly f2fs: add sysfs nodes to get GC info for each GC mode f2fs: drop dirty node pages when cp is in error status f2fs: initialize page->private when using for our internal use f2fs: compress: add nocompress extensions support Revert "f2fs: avoid attaching SB_ACTIVE flag during mount/remount" f2fs: remove false alarm on iget failure during GC f2fs: enable extent cache for compression files in read-only f2fs: fix to avoid adding tab before doc section f2fs: introduce f2fs_casefolded_name slab cache f2fs: swap: support migrating swapfile in aligned write mode f2fs: swap: remove dead codes f2fs: compress: add compress_inode to cache compressed blocks f2fs: clean up /sys/fs/f2fs/<disk>/features f2fs: add pin_file in feature list f2fs: Advertise encrypted casefolding in sysfs f2fs: Show casefolding support only when supported f2fs: support RO feature f2fs: logging neatening f2fs: restructure f2fs page.private layout f2fs: introduce FI_COMPRESS_RELEASED instead of using IMMUTABLE bit f2fs: compress: remove unneeded preallocation f2fs: avoid attaching SB_ACTIVE flag during mount/remount f2fs: atgc: export entries for better tunability via sysfs f2fs: compress: fix to disallow temp extension f2fs: let's allow compression for mmap files f2fs: add MODULE_SOFTDEP to ensure crc32 is included in the initramfs f2fs: return success if there is no work to do f2fs: compress: clean up parameter of __f2fs_cluster_blocks() f2fs: compress: remove unneeded f2fs_put_dnode() f2fs: atgc: fix to set default age threshold f2fs: Prevent swap file in LFS mode f2fs: fix to avoid racing on fsync_entry_slab by multi filesystem instances f2fs: add cp_error check in f2fs_write_compressed_pages f2fs: compress: rename __cluster_may_compress f2fs: return EINVAL for hole cases in swap file f2fs: avoid swapon failure by giving a warning first f2fs: compress: fix to assign cc.cluster_idx correctly f2fs: compress: fix race condition of overwrite vs truncate f2fs: compress: fix to free compress page correctly f2fs: support iflag change given the mask f2fs: avoid null pointer access when handling IPU error f2fs: drop inplace IO if fs status is abnormal f2fs: compress: remove unneed check condition f2fs: clean up left deprecated IO trace codes f2fs: avoid using native allocate_segment_by_default() f2fs: remove unnecessary struct declaration f2fs: fix to avoid NULL pointer dereference f2fs: avoid duplicated codes for cleanup f2fs: document: add description about compressed space handling f2fs: clean up build warnings f2fs: fix the periodic wakeups of discard thread f2fs: fix to avoid accessing invalid fio in f2fs_allocate_data_block() f2fs: fix to avoid GC/mmap race with f2fs_truncate() f2fs: set checkpoint_merge by default f2fs: Fix a hungtask problem in atomic write f2fs: fix to restrict mount condition on readonly block device f2fs: introduce gc_merge mount option f2fs: fix to cover __allocate_new_section() with curseg_lock f2fs: fix wrong alloc_type in f2fs_do_replace_block f2fs: delete empty compress.h f2fs: fix a typo in inode.c f2fs: allow to change discard policy based on cached discard cmds f2fs: fix to avoid touching checkpointed data in get_victim() f2fs: fix to update last i_size if fallocate partially succeeds f2fs: fix error path of f2fs_remount() f2fs: fix wrong comment of nat_tree_lock f2fs: fix to avoid out-of-bounds memory access f2fs: don't start checkpoint thread in readonly mountpoint f2fs: do not use AT_SSR mode in FG_GC & high urgent BG_GC f2fs: add sysfs nodes to get runtime compression stat f2fs: fix to use per-inode maxbytes in f2fs_fiemap f2fs: fix to align to section for fallocate() on pinned file f2fs: expose # of overprivision segments f2fs: fix error handling in f2fs_end_enable_verity() f2fs: fix a redundant call to f2fs_balance_fs if an error occurs f2fs: remove unused file_clear_encrypt() f2fs: check if swapfile is section-alligned f2fs: fix last_lblock check in check_swap_activate_fast f2fs: remove unnecessary IS_SWAPFILE check f2fs: Replace one-element array with flexible-array member f2fs: compress: Allow modular (de)compression algorithms f2fs: check discard command number before traversing discard pending list f2fs: update comments for explicit memory barrier f2fs: remove unused FORCE_FG_GC macro f2fs: avoid unused f2fs_show_compress_options() f2fs: fix panic during f2fs_resize_fs() f2fs: fix to allow migrating fully valid segment f2fs: fix a spelling error f2fs: fix a spacing coding style fs: Enable bmap() function to properly return errors f2fs: remove obsolete f2fs.txt fs-verity: support reading signature with ioctl fs-verity: support reading descriptor with ioctl fs-verity: support reading Merkle tree with ioctl fs-verity: add FS_IOC_READ_VERITY_METADATA ioctl fs-verity: don't pass whole descriptor to fsverity_verify_signature() fs-verity: factor out fsverity_get_descriptor() fs-verity: move structs needed for file signing to UAPI header fs-verity: rename "file measurement" to "file digest" fs-verity: rename fsverity_signed_digest to fsverity_formatted_digest fs-verity: remove filenames from file comments fs-verity: use smp_load_acquire() for ->i_verity_info f2fs: remove FAULT_ALLOC_BIO f2fs: use blkdev_issue_flush in __submit_flush_wait f2fs: remove a few bd_part checks quota: Cleanup list iteration in dqcache_shrink_scan() quota: reclaim least recently used dquots fs: quota: Replace GFP_ATOMIC with GFP_KERNEL in dquot_init quota: Check for register_shrinker() failure. quota: propagate error from __dquot_initialize quota: be aware of error from dquot_initialize Documentation: f2fs: fix typo s/automaic/automatic f2fs: give a warning only for readonly partition f2fs: don't grab superblock freeze for flush/ckpt thread f2fs: add ckpt_thread_ioprio sysfs node f2fs: introduce checkpoint_merge mount option f2fs: relocate inline conversion from mmap() to mkwrite() f2fs: fix a wrong condition in __submit_bio f2fs: remove unnecessary initialization in xattr.c f2fs: fix to avoid inconsistent quota data f2fs: flush data when enabling checkpoint back f2fs: deprecate f2fs_trace_io f2fs: remove unused stat_{inc, dec}_atomic_write f2fs: introduce sb_status sysfs node f2fs: fix to use per-inode maxbytes f2fs: compress: fix potential deadlock libfs: unexport generic_ci_d_compare() and generic_ci_d_hash() f2fs: fix to set/clear I_LINKABLE under i_lock f2fs: fix null page reference in redirty_blocks f2fs: clean up post-read processing f2fs: trival cleanup in move_data_block() f2fs: fix out-of-repair __setattr_copy() f2fs: fix to tag FIEMAP_EXTENT_MERGED in f2fs_fiemap() f2fs: introduce a new per-sb directory in sysfs f2fs: compress: support compress level f2fs: compress: deny setting unsupported compress algorithm f2fs: relocate f2fs_precache_extents() f2fs: enforce the immutable flag on open files f2fs: enhance to update i_mode and acl atomically in f2fs_setattr() f2fs: fix to set inode->i_mode correctly for posix_acl_update_mode f2fs: Replace expression with offsetof() f2fs: handle unallocated section and zone on pinned/atgc f2fs: compress: fix compression chksum f2fs: fix shift-out-of-bounds in sanity_check_raw_super() f2fs: fix race of pending_pages in decompression f2fs: fix to account inline xattr correctly during recovery f2fs: inline: fix wrong inline inode stat f2fs: inline: correct comment in f2fs_recover_inline_data f2fs: don't check PAGE_SIZE again in sanity_check_raw_super() f2fs: convert to F2FS_*_INO macro f2fs: introduce max_io_bytes, a sysfs entry, to limit bio size f2fs: don't allow any writes on readonly mount f2fs: avoid race condition for shrinker count f2fs: add F2FS_IOC_DECOMPRESS_FILE and F2FS_IOC_COMPRESS_FILE f2fs: add compress_mode mount option f2fs: Remove unnecessary unlikely() f2fs: init dirty_secmap incorrectly f2fs: remove buffer_head which has 32bits limit f2fs: fix wrong block count instead of bytes f2fs: use new conversion functions between blks and bytes f2fs: rename logical_to_blk and blk_to_logical f2fs: fix kbytes written stat for multi-device case f2fs: compress: support chksum f2fs: fix to avoid REQ_TIME and CP_TIME collision f2fs: change to use rwsem for cp_mutex f2fs: Handle casefolding with Encryption fscrypt: Have filesystems handle their d_ops libfs: Add generic function for setting dentry_ops f2fs: Remove the redundancy initialization f2fs: remove writeback_inodes_sb in f2fs_remount f2fs: fix double free of unicode map f2fs: fix compat F2FS_IOC_{MOVE,GARBAGE_COLLECT}_RANGE f2fs: avoid unneeded data copy in f2fs_ioc_move_range() f2fs: add F2FS_IOC_SET_COMPRESS_OPTION ioctl f2fs: add F2FS_IOC_GET_COMPRESS_OPTION ioctl f2fs: move ioctl interface definitions to separated file f2fs: fix to seek incorrect data offset in inline data file f2fs: check fiemap parameters f2fs: call f2fs_get_meta_page_retry for nat page fscrypt: rename DCACHE_ENCRYPTED_NAME to DCACHE_NOKEY_NAME fscrypt: don't call no-key names "ciphertext names" fscrypt: export fscrypt_d_revalidate() f2fs: code cleanup by removing unnecessary check f2fs: wait for sysfs kobject removal before freeing f2fs_sb_info f2fs: fix writecount false positive in releasing compress blocks f2fs: introduce check_swap_activate_fast() f2fs: don't issue flush in f2fs_flush_device_cache() for nobarrier case f2fs: handle errors of f2fs_get_meta_page_nofail f2fs: fix to set SBI_NEED_FSCK flag for inconsistent inode f2fs: reject CASEFOLD inode flag without casefold feature f2fs: fix memory alignment to support 32bit f2fs: fix slab leak of rpages pointer f2fs: compress: fix to disallow enabling compress on non-empty file f2fs: compress: introduce cic/dic slab cache f2fs: compress: introduce page array slab cache f2fs: fix to do sanity check on segment/section count f2fs: fix to check segment boundary during SIT page readahead f2fs: fix uninit-value in f2fs_lookup fs/buffer.c: record blockdev write errors in super_block that it backs vfs: track per-sb writeback errors and report them to syncfs f2fs: remove unneeded parameter in find_in_block() f2fs: fix wrong total_sections check and fsmeta check f2fs: remove duplicated code in sanity_check_area_boundary f2fs: remove unused check on version_bitmap f2fs: relocate blkzoned feature check f2fs: do sanity check on zoned block device path f2fs: add trace exit in exception path f2fs: change return value of reserved_segments to unsigned int f2fs: clean up kvfree f2fs: change virtual mapping way for compression pages f2fs: change return value of f2fs_disable_compressed_file to bool f2fs: change i_compr_blocks of inode to atomic value f2fs: ignore compress mount option on image w/o compression feature f2fs: allocate proper size memory for zstd decompress f2fs: change compr_blocks of superblock info to 64bit f2fs: add block address limit check to compressed file f2fs: check position in move range ioctl f2fs: correct statistic of APP_DIRECT_IO/APP_DIRECT_READ_IO f2fs: support age threshold based garbage collection f2fs: Use generic casefolding support fs: Add standard casefolding support unicode: Add utf8_casefold_hash f2fs: compress: use more readable atomic_t type for {cic,dic}.ref f2fs: fix compile warning f2fs: support 64-bits key in f2fs rb-tree node entry f2fs: inherit mtime of original block during GC f2fs: record average update time of segment f2fs: introduce inmem curseg f2fs: compress: remove unneeded code f2fs: remove duplicated type casting f2fs: support zone capacity less than zone size f2fs: update changes in upstream on GC_URGENT_HIGH f2fs: Return EOF on unaligned end of file DIO read f2fs: fix indefinite loop scanning for free nid f2fs: Fix type of section block count variables f2fs: prepare a waiter before entering io_schedule f2fs: update_sit_entry: Make the judgment condition of f2fs_bug_on more intuitive f2fs: replace test_and_set/clear_bit() with set/clear_bit() f2fs: make file immutable even if releasing zero compression block f2fs: compress: disable compression mount option if compression is off f2fs: compress: add sanity check during compressed cluster read f2fs: use macro instead of f2fs verity version f2fs: fix deadlock between quota writes and checkpoint f2fs: correct comment of f2fs_exist_written_data f2fs: compress: delay temp page allocation f2fs: compress: fix to update isize when overwriting compressed file f2fs: space related cleanup f2fs: fix use-after-free issue f2fs: Change the type of f2fs_flush_inline_data() to void f2fs: add F2FS_IOC_SEC_TRIM_FILE ioctl f2fs: segment.h: delete a duplicated word f2fs: compress: fix to avoid memory leak on cc->cpages f2fs: use generic names for generic ioctls f2fs: don't keep meta inode pages used for compressed block migration f2fs: fix error path in do_recover_data() f2fs: fix to wait GCed compressed page writeback f2fs: remove write attribute of main_blkaddr sysfs node f2fs: add GC_URGENT_LOW mode in gc_urgent f2fs: avoid readahead race condition f2fs: fix return value of move_data_block() f2fs: add parameter op_flag in f2fs_submit_page_read() f2fs: split f2fs_allocate_new_segments() f2fs: lost matching-pair of trace in f2fs_truncate_inode_blocks f2fs: fix an oops in f2fs_is_compressed_page f2fs: make trace enter and end in pairs for unlink f2fs: fix to check page dirty status before writeback f2fs: remove the unused compr parameter f2fs: support to trace f2fs_fiemap() f2fs: support to trace f2fs_bmap() f2fs: fix wrong return value of f2fs_bmap_compress() f2fs: remove useless parameter of __insert_free_nid() f2fs: fix typo in comment of f2fs_do_add_link f2fs: fix to wait page writeback before update f2fs: show more debug info for per-temperature log f2fs: add f2fs_gc exception handle in f2fs_ioc_gc_range f2fs: clean up parameter of f2fs_allocate_data_block() f2fs: shrink node_write lock coverage f2fs: add prefix for exported symbols f2fs: use kfree() to free variables allocated by match_strdup() f2fs: get the right gc victim section when section has several segments f2fs: fix a race condition between f2fs_write_end_io and f2fs_del_fsync_node_entry f2fs: remove useless truncate in f2fs_collapse_range() f2fs: use kfree() instead of kvfree() to free superblock data f2fs: avoid checkpatch error f2fs: should avoid inode eviction in synchronous path	2022-05-20 14:51:11 +09:00
Arian	3a330c6445	Merge branch 'android-4.14-stable' of https://android.googlesource.com/kernel/common into HEAD Change-Id: I714223aa1f97959bd97b6bf758511466c9394bd8	2022-03-16 00:46:24 +01:00
Carlos Maiolino	ea4899e241	fs: Enable bmap() function to properly return errors By now, bmap() will either return the physical block number related to the requested file offset or 0 in case of error or the requested offset maps into a hole. This patch makes the needed changes to enable bmap() to proper return errors, using the return value as an error return, and now, a pointer must be passed to bmap() to be filled with the mapped physical block. It will change the behavior of bmap() on return: - negative value in case of error - zero on success or map fell into a hole In case of a hole, the *block will be zero too Since this is a prep patch, by now, the only error return is -EINVAL if ->bmap doesn't exist. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2021-04-12 11:23:11 -07:00
Greg Kroah-Hartman	496d5ba9c5	This is the 4.14.224 stable release -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAmBEqrkACgkQONu9yGCS aT7mng//VA/WvCNtcAvP6hP5AIdVpfRERrbS5Ok09KXK12I8OEI4TCUywbDTcm2B oTmj84aZILoQstVb7GQSa04tf+2jHZ0z39NLxlyRHbrXzcV0z/6OslQv1y6wZzT4 +P25fw97BGpAzw0q0YOXgcjyDtAd5+2l2+/Q52lbAqCVKGbr1FItWx8J2CFol2E5 nul7R8vUbS3z0inFmqEqyixug/RGq6EJHn1HA3RMMO1JWaGTh8FewyVb0ndxcs1F zx1f2lVvTIqsJWkJ/9DcyJwdhFPClEpiVPO/5joLanWXEiTAQNJC08BmXJoIAglP WB9Sl2vSCCN+DmCjPCxWWF5GL/jnohRd8slKwGrELa5E1YdOkqxIUcI4MKby+fck Y9HhjE4OI5L28rGoO1yB3KopnJ6wYCtZSmiHYO6h/dxKMPmRoQ48X5zblPBqFMdu Rr/tXSMFCrpoD0QfdevW8K4t4dHWSh8pf9UxGs6Zv3VDv9i7c+zI4xdNCg/XP3LY Wm1QKC6pkyQFhzteVswMo3jEhw7kuHLgW+KZNS+gX4AbJ99moJOIpigQlzwsMl0m GiKMzrqQ1XwvQH7aQualBkmAYIPcofoshJBvw70MMPS/XGKNArLyTEHu0fzvVTsF cKnzxYEMrYJFQd7hoFHhZnSppEQovYKvRmJv8Mo2wvtNS7EuhD0= =OFAB -----END PGP SIGNATURE----- Merge 4.14.224 into android-4.14-stable Changes in 4.14.224 net: usb: qmi_wwan: support ZTE P685M modem scripts: use pkg-config to locate libcrypto scripts: set proper OpenSSL include dir also for sign-file hugetlb: fix update_and_free_page contig page struct assumption drm/virtio: use kvmalloc for large allocations virtio/s390: implement virtio-ccw revision 2 correctly arm64 module: set plt* section addresses to 0x0 arm64: Avoid redundant type conversions in xchg() and cmpxchg() arm64: cmpxchg: Use "K" instead of "L" for ll/sc immediate constraint arm64: Use correct ll/sc atomic constraints JFS: more checks for invalid superblock media: mceusb: sanity check for prescaler value xfs: Fix assert failure in xfs_setattr_size() smackfs: restrict bytes count in smackfs write functions net: fix up truesize of cloned skb in skb_prepare_for_shift() mm/hugetlb.c: fix unnecessary address expansion of pmd sharing net: bridge: use switchdev for port flags set through sysfs too dt-bindings: net: btusb: DT fix s/interrupt-name/interrupt-names/ staging: fwserial: Fix error handling in fwserial_create x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk vt/consolemap: do font sum unsigned wlcore: Fix command execute failure 19 for wl12xx pktgen: fix misuse of BUG_ON() in pktgen_thread_worker() ath10k: fix wmi mgmt tx queue full due to race condition x86/build: Treat R_386_PLT32 relocation as R_386_PC32 Bluetooth: Fix null pointer dereference in amp_read_loc_assoc_final_data staging: most: sound: add sanity check for function argument media: uvcvideo: Allow entities with no pads f2fs: handle unallocated section and zone on pinned/atgc parisc: Bump 64-bit IRQ stack size to 64 KB scsi: iscsi: Restrict sessions and handles to admin capabilities sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output scsi: iscsi: Ensure sysfs attributes are limited to PAGE_SIZE scsi: iscsi: Verify lengths on passthrough PDUs Xen/gnttab: handle p2m update errors on a per-slot basis xen-netback: respect gnttab_map_refs()'s return value zsmalloc: account the number of compacted pages correctly swap: fix swapfile read/write offset media: v4l: ioctl: Fix memory leak in video_usercopy Linux 4.14.224 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I7731282f88441e9aca7a7d31bab9757831b29273	2021-03-07 11:46:40 +01:00
Jens Axboe	920ab96f34	swap: fix swapfile read/write offset commit caf6912f3f4af7232340d500a4a2008f81b93f14 upstream. We're not factoring in the start of the file for where to write and read the swapfile, which leads to very unfortunate side effects of writing where we should not be... [This issue only affects swapfiles on filesystems on top of blockdevs that implement rw_page ops (brd, zram, btt, pmem), and not on top of any other block devices, in contrast to the upstream commit fix.] Fixes: dd6bd0d9c7db ("swap: use bdev_read_page() / bdev_write_page()") Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Anthony Iliopoulos <ailiop@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2021-03-07 11:27:46 +01:00
Srinivasarao P	8e1e29842d	Merge android-4.14.168 (509b380) into msm-4.14 * refs/heads/tmp-509b380: Revert "Revert "ANDROID: security,perf: Allow further restriction of perf_event_open"" Linux 4.14.168 m68k: Call timer_interrupt() with interrupts disabled serial: stm32: fix clearing interrupt error flags IB/iser: Fix dma_nents type definition arm64: dts: juno: Fix UART frequency drm/radeon: fix bad DMA from INTERRUPT_CNTL2 dmaengine: ti: edma: fix missed failure handling affs: fix a memory leak in affs_remount mmc: core: fix wl1251 sdio quirks mmc: sdio: fix wl1251 vendor id packet: fix data-race in fanout_flow_is_huge() net: neigh: use long type to store jiffies delta hv_netvsc: flag software created hash value MIPS: Loongson: Fix return value of loongson_hwmon_init afs: Fix large file support net: qca_spi: Move reset_count to struct qcaspi net: netem: correct the parent's backlog when corrupted packet was dropped net: netem: fix error path for corrupted GSO frames dmaengine: imx-sdma: fix size check for sdma script_number drm/msm/dsi: Implement reset correctly tcp: annotate lockless access to tcp_memory_pressure net: add {READ\|WRITE}_ONCE() annotations on ->rskq_accept_head net: avoid possible false sharing in sk_leave_memory_pressure() act_mirred: Fix mirred_init_module error handling net: stmmac: fix length of PTP clock's name string llc: fix sk_buff refcounting in llc_conn_state_process() llc: fix another potential sk_buff leak in llc_ui_sendmsg() mac80211: accept deauth frames in IBSS mode net: stmmac: gmac4+: Not all Unicast addresses may be available nvme: retain split access workaround for capability reads net: ethernet: stmmac: Fix signedness bug in ipq806x_gmac_of_parse() of: mdio: Fix a signedness bug in of_phy_get_and_connect() net: axienet: fix a signedness bug in probe net: stmmac: dwmac-meson8b: Fix signedness bug in probe net: broadcom/bcmsysport: Fix signedness in bcm_sysport_probe() net: hisilicon: Fix signedness bug in hix5hd2_dev_probe() net: aquantia: Fix aq_vec_isr_legacy() return value iommu/amd: Wait for completion of IOTLB flush in attach_device net/rds: Fix 'ib_evt_handler_call' element in 'rds_ib_stat_names' RDMA/cma: Fix false error message ath10k: adjust skb length in ath10k_sdio_mbox_rx_packet pinctrl: iproc-gpio: Fix incorrect pinconf configurations net: sonic: replace dev_kfree_skb in sonic_send_packet hwmon: (shtc1) fix shtc1 and shtw1 id mask ixgbe: sync the first fragment unconditionally btrfs: use correct count in btrfs_file_write_iter() Btrfs: fix inode cache waiters hanging on path allocation failure Btrfs: fix inode cache waiters hanging on failure to start caching thread Btrfs: fix hang when loading existing inode cache off disk scsi: fnic: fix msix interrupt allocation net: sonic: return NETDEV_TX_OK if failed to map buffer tty: serial: fsl_lpuart: Use appropriate lpuart32_* I/O funcs ath9k: dynack: fix possible deadlock in ath_dynack_node_{de}init iio: dac: ad5380: fix incorrect assignment to val bcma: fix incorrect update of BCMA_CORE_PCI_MDIO_DATA irqdomain: Add the missing assignment of domain->fwnode for named fwnode staging: greybus: light: fix a couple double frees x86, perf: Fix the dependency of the x86 insn decoder selftest power: supply: Init device wakeup after device_add() hwmon: (lm75) Fix write operations for negative temperatures Partially revert "kfifo: fix kfifo_alloc() and kfifo_init()" ahci: Do not export local variable ahci_em_messages iommu/mediatek: Fix iova_to_phys PA start for 4GB mode mips: avoid explicit UB in assignment of mips_io_port_base rtc: pcf2127: bugfix: read rtc disables watchdog media: atmel: atmel-isi: fix timeout value for stop streaming mac80211: minstrel_ht: fix per-group max throughput rate initialization dmaengine: dw: platform: Switch to acpi_dma_controller_register() ASoC: sun4i-i2s: RX and TX counter registers are swapped signal: Allow cifs and drbd to receive their terminating signals bnxt_en: Fix handling FRAG_ERR when NVM_INSTALL_UPDATE cmd fails net/rds: Add a few missing rds_stat_names entries ASoC: wm8737: Fix copy-paste error in wm8737_snd_controls ASoC: cs4349: Use PM ops 'cs4349_runtime_pm' ASoC: es8328: Fix copy-paste error in es8328_right_line_controls ext4: set error return correctly when ext4_htree_store_dirent fails crypto: caam - free resources in case caam_rng registration failed cifs: fix rmmod regression in cifs.ko caused by force_sig changes net/mlx5: Fix mlx5_ifc_query_lag_out_bits ARM: dts: stm32: add missing vdda-supply to adc on stm32h743i-eval tipc: reduce risk of wakeup queue starvation ALSA: aoa: onyx: always initialize register read value crypto: ccp - Reduce maximum stack usage x86/kgbd: Use NMI_VECTOR not APIC_DM_NMI mic: avoid statically declaring a 'struct device'. usb: host: xhci-hub: fix extra endianness conversion qed: reduce maximum stack frame size libertas_tf: Use correct channel range in lbtf_geo_init PM: sleep: Fix possible overflow in pm_system_cancel_wakeup() clk: sunxi-ng: v3s: add the missing PLL_DDR1 scsi: libfc: fix null pointer dereference on a null lport net: pasemi: fix an use-after-free in pasemi_mac_phy_init() RDMA/hns: Fixs hw access invalid dma memory error devres: allow const resource arguments rxrpc: Fix uninitialized error code in rxrpc_send_data_packet() mfd: intel-lpss: Release IDA resources iommu/amd: Make iommu_disable safer bnxt_en: Fix ethtool selftest crash under error conditions. nvmem: imx-ocotp: Ensure WAIT bits are preserved when setting timing clk: qcom: Fix -Wunused-const-variable dmaengine: hsu: Revert "set HSU_CH_MTSR to memory width" perf/ioctl: Add check for the sample_period value drm/msm/a3xx: remove TPL1 regs from snapshot rtc: pcf8563: Clear event flags and disable interrupts before requesting irq rtc: pcf8563: Fix interrupt trigger method ASoC: ti: davinci-mcasp: Fix slot mask settings when using multiple AXRs net/af_iucv: always register net_device notifier net: netem: fix backlog accounting for corrupted GSO frames drm/msm/mdp5: Fix mdp5_cfg_init error return powerpc/pseries/mobility: rebuild cacheinfo hierarchy post-migration powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild qed: iWARP - Use READ_ONCE and smp_store_release to access ep->state iommu/vt-d: Duplicate iommu_resv_region objects per device list mpls: fix warning with multi-label encap media: vivid: fix incorrect assignment operation when setting video mode cpufreq: brcmstb-avs-cpufreq: Fix types for voltage/frequency cpufreq: brcmstb-avs-cpufreq: Fix initial command check netvsc: unshare skb in VF rx handler inet: frags: call inet_frags_fini() after unregister_pernet_subsys() signal/cifs: Fix cifs_put_tcp_session to call send_sig instead of force_sig iommu: Use right function to get group for device misc: sgi-xp: Properly initialize buf in xpc_get_rsvd_page_pa serial: stm32: fix wakeup source initialization serial: stm32: Add support of TC bit status check serial: stm32: fix transmit_chars when tx is stopped serial: stm32: fix rx error handling crypto: ccp - Fix 3DES complaint from ccp-crypto module crypto: ccp - fix AES CFB error exposed by new test vectors spi: spi-fsl-spi: call spi_finalize_current_message() at the end RDMA/qedr: Fix incorrect device rate. arm64: dts: meson: libretech-cc: set eMMC as removable dmaengine: tegra210-adma: Fix crash during probe ARM: dts: sun8i-h3: Fix wifi in Beelink X2 DT EDAC/mc: Fix edac_mc_find() in case no device is found thermal: cpu_cooling: Actually trace CPU load in thermal_power_cpu_get_power backlight: lm3630a: Return 0 on success in update_status functions kdb: do a sanity check on the cpu in kdb_per_cpu() ARM: riscpc: fix lack of keyboard interrupts after irq conversion pwm: meson: Don't disable PWM when setting duty repeatedly pwm: meson: Consider 128 a valid pre-divider netfilter: ebtables: CONFIG_COMPAT: reject trailing data after last rule crypto: caam - fix caam_dump_sg that iterates through scatterlist platform/x86: alienware-wmi: printing the wrong error code media: davinci/vpbe: array underflow in vpbe_enum_outputs() media: omap_vout: potential buffer overflow in vidioc_dqbuf() l2tp: Fix possible NULL pointer dereference vfio/mdev: Fix aborting mdev child device removal if one fails vfio/mdev: Avoid release parent reference during error path afs: Fix the afs.cell and afs.volume xattr handlers lightnvm: pblk: fix lock order in pblk_rb_tear_down_check mmc: core: fix possible use after free of host dmaengine: tegra210-adma: restore channel status net: ena: fix ena_com_fill_hash_function() implementation net: ena: fix incorrect test of supported hash function net: ena: fix: Free napi resources when ena_up() fails net: ena: fix swapped parameters when calling ena_com_indirect_table_fill_entry iommu/vt-d: Make kernel parameter igfx_off work with vIOMMU IB/mlx5: Add missing XRC options to QP optional params mask dwc2: gadget: Fix completed transfer size calculation in DDMA usb: gadget: fsl: fix link error against usb-gadget module ASoC: fix valid stream condition packet: in recvmsg msg_name return at least sizeof sockaddr_ll scsi: qla2xxx: Avoid that qlt_send_resp_ctio() corrupts memory scsi: qla2xxx: Fix a format specifier irqchip/gic-v3-its: fix some definitions of inner cacheability attributes NFS: Don't interrupt file writeout due to fatal errors ALSA: usb-audio: Handle the error from snd_usb_mixer_apply_create_quirk() dmaengine: axi-dmac: Don't check the number of frames for alignment 6lowpan: Off by one handling ->nexthdr media: ov2659: fix unbalanced mutex_lock/unlock ARM: dts: ls1021: Fix SGMII PCS link remaining down after PHY disconnect powerpc: vdso: Make vdso32 installation conditional in vdso_install selftests/ipc: Fix msgque compiler warnings tipc: set sysctl_tipc_rmem and named_timeout right range platform/x86: alienware-wmi: fix kfree on potentially uninitialized pointer hwmon: (w83627hf) Use request_muxed_region for Super-IO accesses net: hns3: fix for vport->bw_limit overflow problem ARM: pxa: ssp: Fix "WARNING: invalid free of devm_ allocated data" scsi: target/core: Fix a race condition in the LUN lookup code scsi: qla2xxx: Unregister chrdev if module initialization fails ehea: Fix a copy-paste err in ehea_init_port_res spi: bcm2835aux: fix driver to not allow 65535 (=-1) cs-gpios soc/fsl/qe: Fix an error code in qe_pin_request() spi: tegra114: configure dma burst size to fifo trig level spi: tegra114: flush fifos spi: tegra114: terminate dma and reset on transfer timeout spi: tegra114: fix for unpacked mode transfers spi: tegra114: clear packed bit for unpacked mode media: tw5864: Fix possible NULL pointer dereference in tw5864_handle_frame media: davinci-isif: avoid uninitialized variable use ARM: OMAP2+: Fix potentially uninitialized return value for _setup_reset() arm64: dts: allwinner: a64: Add missing PIO clocks m68k: mac: Fix VIA timer counter accesses tipc: tipc clang warning jfs: fix bogus variable self-initialization regulator: tps65086: Fix tps65086_ldoa1_ranges for selector 0xB media: cx23885: check allocation return media: wl128x: Fix an error code in fm_download_firmware() media: cx18: update pos correctly in cx18_read_pos() media: ivtv: update pos correctly in ivtv_read_pos() regulator: lp87565: Fix missing register for LP87565_BUCK_0 net: sh_eth: fix a missing check of of_get_phy_mode xen, cpu_hotplug: Prevent an out of bounds access drivers/rapidio/rio_cm.c: fix potential oops in riocm_ch_listen() scsi: megaraid_sas: reduce module load time x86/mm: Remove unused variable 'cpu' nios2: ksyms: Add missing symbol exports powerpc/mm: Check secondary hash page table net: aquantia: fixed instack structure overflow NFSv4/flexfiles: Fix invalid deref in FF_LAYOUT_DEVID_NODE() netfilter: nft_set_hash: fix lookups with fixed size hash on big endian regulator: wm831x-dcdc: Fix list of wm831x_dcdc_ilim from mA to uA ARM: 8848/1: virt: Align GIC version check with arm64 counterpart ARM: 8847/1: pm: fix HYP/SVC mode mismatch when MCPM is used mmc: sdhci-brcmstb: handle mmc_of_parse() errors during probe NFS/pnfs: Bulk destroy of layouts needs to be safe w.r.t. umount platform/x86: wmi: fix potential null pointer dereference clocksource/drivers/exynos_mct: Fix error path in timer resources initialization clocksource/drivers/sun5i: Fail gracefully when clock rate is unavailable NFS: Fix a soft lockup in the delegation recovery code powerpc/64s: Fix logic when handling unknown CPU features staging: rtlwifi: Use proper enum for return in halmac_parse_psd_data_88xx fs/nfs: Fix nfs_parse_devname to not modify it's argument ASoC: qcom: Fix of-node refcount unbalance in apq8016_sbc_parse_of() drm/nouveau/pmu: don't print reply values if exec is false drm/nouveau/bios/ramcfg: fix missing parentheses when calculating RON net: dsa: qca8k: Enable delay for RGMII_ID mode regulator: pv88090: Fix array out-of-bounds access regulator: pv88080: Fix array out-of-bounds access regulator: pv88060: Fix array out-of-bounds access cdc-wdm: pass return value of recover_from_urb_loss dmaengine: mv_xor: Use correct device for DMA API staging: r8822be: check kzalloc return or bail KVM: PPC: Release all hardware TCE tables attached to a group hwmon: (pmbus/tps53679) Fix driver info initialization in probe routine vfio_pci: Enable memory accesses before calling pci_map_rom keys: Timestamp new keys block: don't use bio->bi_vcnt to figure out segment number usb: phy: twl6030-usb: fix possible use-after-free on remove PCI: endpoint: functions: Use memcpy_fromio()/memcpy_toio() pinctrl: sh-pfc: sh73a0: Fix fsic_spdif pin groups pinctrl: sh-pfc: r8a7792: Fix vin1_data18_b pin group pinctrl: sh-pfc: r8a7791: Fix scifb2_data_c pin group pinctrl: sh-pfc: emev2: Add missing pinmux functions drm/etnaviv: potential NULL dereference iw_cxgb4: use tos when finding ipv6 routes iw_cxgb4: use tos when importing the endpoint fbdev: chipsfb: remove set but not used variable 'size' rtc: pm8xxx: fix unintended sign extension rtc: 88pm80x: fix unintended sign extension rtc: 88pm860x: fix unintended sign extension rtc: ds1307: rx8130: Fix alarm handling net: phy: fixed_phy: Fix fixed_phy not checking GPIO thermal: mediatek: fix register index error rtc: ds1672: fix unintended sign extension staging: most: cdev: add missing check for cdev_add failure iwlwifi: mvm: fix RSS config command ARM: dts: lpc32xx: phy3250: fix SD card regulator voltage ARM: dts: lpc32xx: fix ARM PrimeCell LCD controller clocks property ARM: dts: lpc32xx: fix ARM PrimeCell LCD controller variant ARM: dts: lpc32xx: reparent keypad controller to SIC1 ARM: dts: lpc32xx: add required clocks property to keypad device node driver core: Do not resume suppliers under device_links_write_lock() crypto: crypto4xx - Fix wrong ppc4xx_trng_probe()/ppc4xx_trng_remove() arguments driver: uio: fix possible use-after-free in __uio_register_device driver: uio: fix possible memory leak in __uio_register_device tty: ipwireless: Fix potential NULL pointer dereference iwlwifi: mvm: fix A-MPDU reference assignment net/mlx5: Take lock with IRQs disabled to avoid deadlock iwlwifi: mvm: avoid possible access out of array. clk: sunxi-ng: sun8i-a23: Enable PLL-MIPI LDOs when ungating it spi/topcliff_pch: Fix potential NULL dereference on allocation error rtc: cmos: ignore bogus century byte IB/iser: Pass the correct number of entries for dma mapped SGL ASoC: imx-sgtl5000: put of nodes if finding codec fails crypto: tgr192 - fix unaligned memory access crypto: brcm - Fix some set-but-not-used warning kbuild: mark prepare0 as PHONY to fix external module build media: s5p-jpeg: Correct step and max values for V4L2_CID_JPEG_RESTART_INTERVAL drm/etnaviv: NULL vs IS_ERR() buf in etnaviv_core_dump() RDMA/iw_cxgb4: Fix the unchecked ep dereference spi: cadence: Correct initialisation of runtime PM arm64: dts: apq8016-sbc: Increase load on l11 for SDCARD drm/shmob: Fix return value check in shmob_drm_probe RDMA/qedr: Fix out of bounds index check in query pkey RDMA/ocrdma: Fix out of bounds index check in query pkey IB/usnic: Fix out of bounds index check in query pkey MIPS: BCM63XX: drop unused and broken DSP platform device clk: dove: fix refcount leak in dove_clk_init() clk: mv98dx3236: fix refcount leak in mv98dx3236_clk_init() clk: armada-xp: fix refcount leak in axp_clk_init() clk: kirkwood: fix refcount leak in kirkwood_clk_init() clk: armada-370: fix refcount leak in a370_clk_init() clk: vf610: fix refcount leak in vf610_clocks_init() clk: imx7d: fix refcount leak in imx7d_clocks_init() clk: imx6sx: fix refcount leak in imx6sx_clocks_init() clk: imx6q: fix refcount leak in imx6q_clocks_init() clk: samsung: exynos4: fix refcount leak in exynos4_get_xom() clk: socfpga: fix refcount leak clk: qoriq: fix refcount leak in clockgen_init() clk: highbank: fix refcount leak in hb_clk_init() Input: nomadik-ske-keypad - fix a loop timeout test vxlan: changelink: Fix handling of default remotes pinctrl: sh-pfc: sh7734: Remove bogus IPSR10 value pinctrl: sh-pfc: sh7269: Add missing PCIOR0 field pinctrl: sh-pfc: r8a77995: Remove bogus SEL_PWM[0-3]_3 configurations pinctrl: sh-pfc: sh7734: Add missing IPSR11 field pinctrl: sh-pfc: r8a7794: Remove bogus IPSR9 field pinctrl: sh-pfc: sh73a0: Add missing TO pin to tpu4_to3 group pinctrl: sh-pfc: r8a7791: Remove bogus marks from vin1_b_data18 group pinctrl: sh-pfc: r8a7791: Remove bogus ctrl marks from qspi_data4_b group pinctrl: sh-pfc: r8a7740: Add missing LCD0 marks to lcd0_data24_1 group pinctrl: sh-pfc: r8a7740: Add missing REF125CK pin to gether_gmii group switchtec: Remove immediate status check after submitting MRPC command staging: bcm2835-camera: Abort probe if there is no camera IB/rxe: Fix incorrect cache cleanup in error flow net: phy: Fix not to call phy_resume() if PHY is not attached drm/dp_mst: Skip validating ports during destruction, just ref exportfs: fix 'passing zero to ERR_PTR()' warning pcrypt: use format specifier in kobject_add NTB: ntb_hw_idt: replace IS_ERR_OR_NULL with regular NULL checks mlxsw: reg: QEEC: Add minimum shaper fields drm/sun4i: hdmi: Fix double flag assignation pwm: lpss: Release runtime-pm reference from the driver's remove callback staging: comedi: ni_mio_common: protect register write overflow ALSA: usb-audio: update quirk for B&W PX to remove microphone IB/hfi1: Add mtu check for operational data VLs IB/rxe: replace kvfree with vfree drm/hisilicon: hibmc: Don't overwrite fb helper surface depth PCI: iproc: Remove PAXC slot check to allow VF support apparmor: don't try to replace stale label in ptrace access check ALSA: hda: fix unused variable warning drm/virtio: fix bounds check in virtio_gpu_cmd_get_capset() drm/sti: do not remove the drm_bridge that was never added crypto: sun4i-ss - fix big endian issues mt7601u: fix bbp version check in mt7601u_wait_bbp_ready tipc: fix wrong timeout input for tipc_wait_for_cond() powerpc/archrandom: fix arch_get_random_seed_int() mfd: intel-lpss: Add default I2C device properties for Gemini Lake xfs: Sanity check flags of Q_XQUOTARM call FROMGIT: ext4: Add EXT4_IOC_FSGETXATTR/EXT4_IOC_FSSETXATTR to compat_ioctl. ANDROID: cuttlefish_defconfig: enable CONFIG_IKHEADERS as m ANDROID: cuttlefish_defconfig: enable NVDIMM/PMEM options UPSTREAM: virtio-pmem: Add virtio pmem driver BACKPORT: libnvdimm: nd_region flush callback support UPSTREAM: libnvdimm/of_pmem: Provide a unique name for bus provider UPSTREAM: libnvdimm/of_pmem: Fix platform_no_drv_owner.cocci warnings UPSTREAM: libnvdimm, of_pmem: use dev_to_node() instead of of_node_to_nid() UPSTREAM: libnvdimm: Add device-tree based driver UPSTREAM: libnvdimm: Add of_node to region and bus descriptors FROMLIST: security: selinux: allow per-file labelling for binderfs UPSTREAM: mm/page_io.c: annotate refault stalls from swap_readpage Revert "ANDROID: security,perf: Allow further restriction of perf_event_open" ANDROID: selinux: modify RTM_GETLINK permission UPSTREAM: lib/test_meminit.c: add bulk alloc/free tests UPSTREAM: lib/test_meminit: add a kmem_cache_alloc_bulk() test UPSTREAM: mm: slub: really fix slab walking for init_on_free UPSTREAM: mm/slub.c: init_on_free=1 should wipe freelist ptr for bulk allocations Conflicts: drivers/mmc/core/quirks.h include/uapi/linux/virtio_ids.h New header file entries are added to .bp files. Change-Id: I515cb78684f524e239850625b163ba023b517e10 Signed-off-by: Srinivasarao P <spathi@codeaurora.org>	2020-06-30 21:32:05 +05:30
Vinayak Menon	277451b315	mm/page_io.c: do not free shared swap slots The following race is observed due to which a processes faulting on a swap entry, finds the page neither in swapcache nor swap. This causes zram to give a zero filled page that gets mapped to the process, resulting in a user space crash later. Consider parent and child processes Pa and Pb sharing the same swap slot with swap_count 2. Swap is on zram with SWP_SYNCHRONOUS_IO set. Virtual address 'VA' of Pa and Pb points to the shared swap entry. Pa Pb fault on VA fault on VA do_swap_page do_swap_page lookup_swap_cache fails lookup_swap_cache fails Pb scheduled out swapin_readahead (deletes zram entry) swap_free (makes swap_count 1) Pb scheduled in swap_readpage (swap_count == 1) Takes SWP_SYNCHRONOUS_IO path zram enrty absent zram gives a zero filled page Fix this by making sure that swap slot is freed only when swap count drops down to one. Change-Id: I85350d53ee1b9426cc960bd7ab44872a63759987 Link: http://lkml.kernel.org/r/1571743294-14285-1-git-send-email-vinmenon@codeaurora.org Fixes: aa8d22a11da9 ("mm: swap: SWP_SYNCHRONOUS_IO: skip swapcache only if swapped page has no other reference") Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org> Suggested-by: Minchan Kim <minchan@google.com> Acked-by: Minchan Kim <minchan@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Hugh Dickins <hughd@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Git-commit: 5df373e95689b9519b8557da7c5bd0db0856d776 Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git [charante@codeaurora.org: Fixed trivial build error] Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>	2020-02-24 18:57:33 +05:30
Minchan Kim	f48fcae0ed	UPSTREAM: mm/page_io.c: annotate refault stalls from swap_readpage If a block device supports rw_page operation, it doesn't submit bios so the annotation in submit_bio() for refault stall doesn't work. It happens with zram in android, especially swap read path which could consume CPU cycle for decompress. It is also a problem for zswap which uses frontswap. Annotate swap_readpage() to account the synchronous IO overhead to prevent underreport memory pressure. [akpm@linux-foundation.org: add comment, per Johannes] Link: http://lkml.kernel.org/r/20191010152134.38545-1-minchan@kernel.org Signed-off-by: Minchan Kim <minchan@google.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Cc: Seth Jennings <sjenning@redhat.com> Cc: Dan Streetman <ddstreet@ieee.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit 937790699be9c8100e5358625e7dfa8b32bd33f2) Bug: 142418748 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: I8a63030888996b6c0a3a9abe3f2d0eca0a0d765b	2020-01-24 17:54:41 +00:00
Minchan Kim	983b22e69f	mm, swap: skip swapcache for swapin of synchronous device With fast swap storage, the platforms want to use swap more aggressively and swap-in is crucial to application latency. The rw_page() based synchronous devices like zram, pmem and btt are such fast storage. When I profile swapin performance with zram lz4 decompress test, S/W overhead is more than 70%. Maybe, it would be bigger in nvdimm. This patch aims to reduce swap-in latency by skipping swapcache if the swap device is synchronous device like rw_page based device. It enhances 45% my swapin test(5G sequential swapin, no readahead, from 2.41sec to 1.64sec). Change-Id: I3f8d0c3b4487331e6e0c02a09bea3077223534b8 Link: http://lkml.kernel.org/r/1505886205-9671-5-git-send-email-minchan@kernel.org Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Ilya Dryomov <idryomov@gmail.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Huang Ying <ying.huang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Git-commit: 0bcac06f27d7528591c27ac2b093ccd71c5d0168 Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>	2018-05-22 11:23:24 +05:30
Vinayak Menon	17c597fda7	mm: ratelimit swap write errors Ratelimit the swap write errors to avoid logbuf getting filled up by these messages. These pages remove the useful page allocation failure messages (when zram is used as swap) from logbuf, thus making the debugging difficult. Change-Id: I9d4229a76b2551d7baca603112d53012d8722415 Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org> Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>	2018-04-26 15:06:31 +05:30
Greg Kroah-Hartman	b24413180f	License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a /uapi/ one with no licensing information in it, - file was a /uapi/ one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non /uapi/ files that summary was: SPDX license identifier # files ---------------------------------------------------\|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a /uapi/ path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------\|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the /uapi/ ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------\|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2017-11-02 11:10:55 +01:00
Linus Torvalds	a0725ab0c7	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block Pull block layer updates from Jens Axboe: "This is the first pull request for 4.14, containing most of the code changes. It's a quiet series this round, which I think we needed after the churn of the last few series. This contains: - Fix for a registration race in loop, from Anton Volkov. - Overflow complaint fix from Arnd for DAC960. - Series of drbd changes from the usual suspects. - Conversion of the stec/skd driver to blk-mq. From Bart. - A few BFQ improvements/fixes from Paolo. - CFQ improvement from Ritesh, allowing idling for group idle. - A few fixes found by Dan's smatch, courtesy of Dan. - A warning fixup for a race between changing the IO scheduler and device remova. From David Jeffery. - A few nbd fixes from Josef. - Support for cgroup info in blktrace, from Shaohua. - Also from Shaohua, new features in the null_blk driver to allow it to actually hold data, among other things. - Various corner cases and error handling fixes from Weiping Zhang. - Improvements to the IO stats tracking for blk-mq from me. Can drastically improve performance for fast devices and/or big machines. - Series from Christoph removing bi_bdev as being needed for IO submission, in preparation for nvme multipathing code. - Series from Bart, including various cleanups and fixes for switch fall through case complaints" * 'for-4.14/block' of git://git.kernel.dk/linux-block: (162 commits) kernfs: checking for IS_ERR() instead of NULL drbd: remove BIOSET_NEED_RESCUER flag from drbd_{md_,}io_bio_set drbd: Fix allyesconfig build, fix recent commit drbd: switch from kmalloc() to kmalloc_array() drbd: abort drbd_start_resync if there is no connection drbd: move global variables to drbd namespace and make some static drbd: rename "usermode_helper" to "drbd_usermode_helper" drbd: fix race between handshake and admin disconnect/down drbd: fix potential deadlock when trying to detach during handshake drbd: A single dot should be put into a sequence. drbd: fix rmmod cleanup, remove _all_ debugfs entries drbd: Use setup_timer() instead of init_timer() to simplify the code. drbd: fix potential get_ldev/put_ldev refcount imbalance during attach drbd: new disk-option disable-write-same drbd: Fix resource role for newly created resources in events2 drbd: mark symbols static where possible drbd: Send P_NEG_ACK upon write error in protocol != C drbd: add explicit plugging when submitting batches drbd: change list_for_each_safe to while(list_first_entry_or_null) drbd: introduce drbd_recv_header_maybe_unplug ...	2017-09-07 11:59:42 -07:00
Huang Ying	225311a464	mm: test code to write THP to swap device as a whole To support delay splitting THP (Transparent Huge Page) after swapped out, we need to enhance swap writing code to support to write a THP as a whole. This will improve swap write IO performance. As Ming Lei <ming.lei@redhat.com> pointed out, this should be based on multipage bvec support, which hasn't been merged yet. So this patch is only for testing the functionality of the other patches in the series. And will be reimplemented after multipage bvec support is merged. Link: http://lkml.kernel.org/r/20170724051840.2309-7-ying.huang@intel.com Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Rik van Riel <riel@redhat.com> Cc: Ross Zwisler <ross.zwisler@intel.com> [for brd.c, zram_drv.c, pmem.c] Cc: Shaohua Li <shli@kernel.org> Cc: Vishal L Verma <vishal.l.verma@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2017-09-06 17:27:28 -07:00
Christoph Hellwig	74d46992e0	block: replace bi_bdev with a gendisk pointer and partitions index This way we don't need a block_device structure to submit I/O. The block_device has different life time rules from the gendisk and request_queue and is usually only available when the block device node is open. Other callers need to explicitly create one (e.g. the lightnvm passthrough code, or the new nvme multipathing code). For the actual I/O path all that we need is the gendisk, which exists once per block device. But given that the block layer also does partition remapping we additionally need a partition index, which is used for said remapping in generic_make_request. Note that all the block drivers generally want request_queue or sometimes the gendisk, so this removes a layer of indirection all over the stack. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>	2017-08-23 12:49:55 -06:00
Tetsuo Handa	b0ba2d0faf	mm/page_io.c: fix oops during block io poll in swapin path When a thread is OOM-killed during swap_readpage() operation, an oops occurs because end_swap_bio_read() is calling wake_up_process() based on an assumption that the thread which called swap_readpage() is still alive. Out of memory: Kill process 525 (polkitd) score 0 or sacrifice child Killed process 525 (polkitd) total-vm:528128kB, anon-rss:0kB, file-rss:4kB, shmem-rss:0kB oom_reaper: reaped process 525 (polkitd), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC Modules linked in: nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ipt_REJECT nf_reject_ipv4 ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_raw ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter coretemp ppdev pcspkr vmw_balloon sg shpchp vmw_vmci parport_pc parport i2c_piix4 ip_tables xfs libcrc32c sd_mod sr_mod cdrom ata_generic pata_acpi vmwgfx ahci libahci drm_kms_helper ata_piix syscopyarea sysfillrect sysimgblt fb_sys_fops mptspi scsi_transport_spi ttm e1000 mptscsih drm mptbase i2c_core libata serio_raw CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.13.0-rc2-next-20170725 #129 Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/31/2013 task: ffffffffb7c16500 task.stack: ffffffffb7c00000 RIP: 0010:__lock_acquire+0x151/0x12f0 Call Trace: <IRQ> lock_acquire+0x59/0x80 _raw_spin_lock_irqsave+0x3b/0x4f try_to_wake_up+0x3b/0x410 wake_up_process+0x10/0x20 end_swap_bio_read+0x6f/0xf0 bio_endio+0x92/0xb0 blk_update_request+0x88/0x270 scsi_end_request+0x32/0x1c0 scsi_io_completion+0x209/0x680 scsi_finish_command+0xd4/0x120 scsi_softirq_done+0x120/0x140 __blk_mq_complete_request_remote+0xe/0x10 flush_smp_call_function_queue+0x51/0x120 generic_smp_call_function_single_interrupt+0xe/0x20 smp_trace_call_function_single_interrupt+0x22/0x30 smp_call_function_single_interrupt+0x9/0x10 call_function_single_interrupt+0xa7/0xb0 </IRQ> RIP: 0010:native_safe_halt+0x6/0x10 default_idle+0xe/0x20 arch_cpu_idle+0xa/0x10 default_idle_call+0x1e/0x30 do_idle+0x187/0x200 cpu_startup_entry+0x6e/0x70 rest_init+0xd0/0xe0 start_kernel+0x456/0x477 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0xf7/0x11a secondary_startup_64+0xa5/0xa5 Code: c3 49 81 3f 20 9e 0b b8 41 bc 00 00 00 00 44 0f 45 e2 83 fe 01 0f 87 62 ff ff ff 89 f0 49 8b 44 c7 08 48 85 c0 0f 84 52 ff ff ff <f0> ff 80 98 01 00 00 8b 3d 5a 49 c4 01 45 8b b3 18 0c 00 00 85 RIP: __lock_acquire+0x151/0x12f0 RSP: ffffa01f39e03c50 ---[ end trace 6c441db499169b1e ]--- Kernel panic - not syncing: Fatal exception in interrupt Kernel Offset: 0x36000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) ---[ end Kernel panic - not syncing: Fatal exception in interrupt Fix it by holding a reference to the thread. [akpm@linux-foundation.org: add comment] Fixes: 23955622ff8d231b ("swap: add block io poll in swapin path") Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reviewed-by: Shaohua Li <shli@fb.com> Cc: Tim Chen <tim.c.chen@intel.com> Cc: Huang Ying <ying.huang@intel.com> Cc: Jens Axboe <axboe@fb.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2017-08-02 17:16:11 -07:00
Shaohua Li	23955622ff	swap: add block io poll in swapin path For fast flash disk, async IO could introduce overhead because of context switch. block-mq now supports IO poll, which improves performance and latency a lot. swapin is a good place to use this technique, because the task is waiting for the swapin page to continue execution. In my virtual machine, directly read 4k data from a NVMe with iopoll is about 60% better than that without poll. With iopoll support in swapin patch, my microbenchmark (a task does random memory write) is about 10%~25% faster. CPU utilization increases a lot though, 2x and even 3x CPU utilization. This will depend on disk speed. While iopoll in swapin isn't intended for all usage cases, it's a win for latency sensistive workloads with high speed swap disk. block layer has knob to control poll in runtime. If poll isn't enabled in block layer, there should be no noticeable change in swapin. I got a chance to run the same test in a NVMe with DRAM as the media. In simple fio IO test, blkpoll boosts 50% performance in single thread test and ~20% in 8 threads test. So this is the base line. In above swap test, blkpoll boosts ~27% performance in single thread test. blkpoll uses 2x CPU time though. If we enable hybid polling, the performance gain has very slight drop but CPU time is only 50% worse than that without blkpoll. Also we can adjust parameter of hybid poll, with it, the CPU time penality is reduced further. In 8 threads test, blkpoll doesn't help though. The performance is similar to that without blkpoll, but cpu utilization is similar too. There is lock contention in swap path. The cpu time spending on blkpoll isn't high. So overall, blkpoll swapin isn't worse than that without it. The swapin readahead might read several pages in in the same time and form a big IO request. Since the IO will take longer time, it doesn't make sense to do poll, so the patch only does iopoll for single page swapin. [akpm@linux-foundation.org: coding-style fixes] Link: http://lkml.kernel.org/r/070c3c3e40b711e7b1390002c991e86a-b5408f0@7511894063d3764ff01ea8111f5a004d7dd700ed078797c204a24e620ddb965c Signed-off-by: Shaohua Li <shli@fb.com> Cc: Tim Chen <tim.c.chen@intel.com> Cc: Huang Ying <ying.huang@intel.com> Cc: Jens Axboe <axboe@fb.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2017-07-10 16:32:30 -07:00
Christoph Hellwig	4e4cbee93d	block: switch bios to blk_status_t Replace bi_error with a new bi_status to allow for a clear conversion. Note that device mapper overloaded bi_error with a private value, which we'll have to keep arround at least for now and thus propagate to a proper blk_status_t value. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>	2017-06-09 09:27:32 -06:00
Jens Axboe	7637241e65	writeback: add wbc_to_write_flags() Add wbc_to_write_flags(), which returns the write modifier flags to use, based on a struct writeback_control. No functional changes in this patch, but it prepares us for factoring other wbc fields for write type. Signed-off-by: Jens Axboe <axboe@fb.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Christoph Hellwig <hch@lst.de>	2016-11-02 10:24:03 -06:00
Andrew Morton	cc30c5d646	mm/page_io.c: replace some BUG_ON()s with VM_BUG_ON_PAGE() So they are CONFIG_DEBUG_VM-only and more informative. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: David S. Miller <davem@davemloft.net> Cc: Hugh Dickins <hughd@google.com> Cc: Jens Axboe <axboe@fb.com> Cc: Joe Perches <joe@perches.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Hocko <mhocko@suse.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Rik van Riel <riel@redhat.com> Cc: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-10-07 18:46:29 -07:00
Santosh Shilimkar	c8de641b1e	mm: fix the page_swap_info() BUG_ON check Commit 62c230bc1790 ("mm: add support for a filesystem to activate swap files and use direct_IO for writing swap pages") replaced the swap_aops dirty hook from __set_page_dirty_no_writeback() with swap_set_page_dirty(). For normal cases without these special SWP flags code path falls back to __set_page_dirty_no_writeback() so the behaviour is expected to be the same as before. But swap_set_page_dirty() makes use of the page_swap_info() helper to get the swap_info_struct to check for the flags like SWP_FILE, SWP_BLKDEV etc as desired for those features. This helper has BUG_ON(!PageSwapCache(page)) which is racy and safe only for the set_page_dirty_lock() path. For the set_page_dirty() path which is often needed for cases to be called from irq context, kswapd() can toggle the flag behind the back while the call is getting executed when system is low on memory and heavy swapping is ongoing. This ends up with undesired kernel panic. This patch just moves the check outside the helper to its users appropriately to fix kernel panic for the described path. Couple of users of helpers already take care of SwapCache condition so I skipped them. Link: http://lkml.kernel.org/r/1473460718-31013-1-git-send-email-santosh.shilimkar@oracle.com Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Joe Perches <joe@perches.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Rik van Riel <riel@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jens Axboe <axboe@fb.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Hugh Dickins <hughd@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <stable@vger.kernel.org> [4.7.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-09-19 15:36:17 -07:00
Jens Axboe	ba13e83ec3	mm: make __swap_writepage() use bio_set_op_attrs() Cleaner than manipulating bio->bi_rw flags directly. Signed-off-by: Jens Axboe <axboe@fb.com>	2016-08-07 14:41:02 -06:00
Mikulas Patocka	7e4411bfe6	mm: add cond_resched() to generic_swapfile_activate() generic_swapfile_activate() can take quite long time, it iterates over all blocks of a file, so add cond_resched to it. I observed about 1 second stalls when activating a swapfile that was almost unfragmented - this patch fixes it. Link: http://lkml.kernel.org/r/alpine.LRH.2.02.1607221710580.4818@file01.intranet.prod.int.rdu2.redhat.com Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Hugh Dickins <hughd@google.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Mel Gorman <mgorman@suse.de> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-07-28 16:07:41 -07:00
Mike Christie	95fe6c1a20	block, fs, mm, drivers: use bio set/get op accessors This patch converts the simple bi_rw use cases in the block, drivers, mm and fs code to set/get the bio operation using bio_set_op_attrs/bio_op These should be simple one or two liner cases, so I just did them in one patch. The next patches handle the more complicated cases in a module per patch. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>	2016-06-07 13:41:38 -06:00
Mike Christie	4e49ea4a3d	block/fs/drivers: remove rw argument from submit_bio This has callers of submit_bio/submit_bio_wait set the bio->bi_rw instead of passing it in. This makes that use the same as generic_make_request and how we set the other bio fields. Signed-off-by: Mike Christie <mchristi@redhat.com> Fixed up fs/ext4/crypto.c Signed-off-by: Jens Axboe <axboe@fb.com>	2016-06-07 13:41:38 -06:00
Linus Torvalds	c2e7b20705	Merge branch 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs cleanups from Al Viro: "More cleanups from Christoph" * 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: nfsd: use RWF_SYNC fs: add RWF_DSYNC aand RWF_SYNC ceph: use generic_write_sync fs: simplify the generic_write_sync prototype fs: add IOCB_SYNC and IOCB_DSYNC direct-io: remove the offset argument to dio_complete direct-io: eliminate the offset argument to ->direct_IO xfs: eliminate the pos variable in xfs_file_dio_aio_write filemap: remove the pos argument to generic_file_direct_write filemap: remove pos variables in generic_file_read_iter	2016-05-17 15:05:23 -07:00
Christoph Hellwig	c8b8e32d70	direct-io: eliminate the offset argument to ->direct_IO Including blkdev_direct_IO and dax_do_io. It has to be ki_pos to actually work, so eliminate the superflous argument. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2016-05-01 19:58:39 -04:00
Minchan Kim	b06bad17c7	mm: call swap_slot_free_notify() with page lock held Kyeongdon reported below error which is BUG_ON(!PageSwapCache(page)) in page_swap_info. The reason is that page_endio in rw_page unlocks the page if read I/O is completed so we need to hold a PG_lock again to check PageSwapCache. Otherwise, the page can be removed from swapcache. Kernel BUG at c00f9040 [verbose debug info unavailable] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM Modules linked in: CPU: 4 PID: 13446 Comm: RenderThread Tainted: G W 3.10.84-g9f14aec-dirty #73 task: c3b73200 ti: dd192000 task.ti: dd192000 PC is at page_swap_info+0x10/0x2c LR is at swap_slot_free_notify+0x18/0x6c pc : [<c00f9040>] lr : [<c00f5560>] psr: 400f0113 sp : dd193d78 ip : c2deb1e4 fp : da015180 r10: 00000000 r9 : 000200da r8 : c120fe08 r7 : 00000000 r6 : 00000000 r5 : c249a6c0 r4 : = c249a6c0 r3 : 00000000 r2 : 40080009 r1 : 200f0113 r0 : = c249a6c0 ..<snip> .. Call Trace: page_swap_info+0x10/0x2c swap_slot_free_notify+0x18/0x6c swap_readpage+0x90/0x11c read_swap_cache_async+0x134/0x1ac swapin_readahead+0x70/0xb0 handle_pte_fault+0x320/0x6fc handle_mm_fault+0xc0/0xf0 do_page_fault+0x11c/0x36c do_DataAbort+0x34/0x118 Fixes: 3f2b1a04f44933f2 ("zram: revive swap_slot_free_notify") Signed-off-by: Minchan Kim <minchan@kernel.org> Tested-by: Kyeongdon Kim <kyeongdon.kim@lge.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-04-28 19:34:04 -07:00
Kirill A. Shutemov	09cbfeaf1a	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced long time ago with promise that one day it will be possible to implement page cache with bigger chunks than PAGE_SIZE. This promise never materialized. And unlikely will. We have many places where PAGE_CACHE_SIZE assumed to be equal to PAGE_SIZE. And it's constant source of confusion on whether PAGE_CACHE_* or PAGE_* constant should be used in a particular case, especially on the border between fs and mm. Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much breakage to be doable. Let's stop pretending that pages in page cache are special. They are not. The changes are pretty straight-forward: - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN}; - page_cache_get() -> get_page(); - page_cache_release() -> put_page(); This patch contains automated changes generated with coccinelle using script below. For some reason, coccinelle doesn't patch header files. I've called spatch for them manually. The only adjustment after coccinelle is revert of changes to PAGE_CAHCE_ALIGN definition: we are going to drop it later. There are few places in the code where coccinelle didn't reach. I'll fix them manually in a separate patch. Comments and documentation also will be addressed with the separate patch. virtual patch @@ expression E; @@ - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ expression E; @@ - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ @@ - PAGE_CACHE_SHIFT + PAGE_SHIFT @@ @@ - PAGE_CACHE_SIZE + PAGE_SIZE @@ @@ - PAGE_CACHE_MASK + PAGE_MASK @@ expression E; @@ - PAGE_CACHE_ALIGN(E) + PAGE_ALIGN(E) @@ expression E; @@ - page_cache_get(E) + get_page(E) @@ expression E; @@ - page_cache_release(E) + put_page(E) Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-04-04 10:41:08 -07:00
Minchan Kim	3f2b1a04f4	zram: revive swap_slot_free_notify Commit b430e9d1c6d4 ("remove compressed copy from zram in-memory") applied swap_slot_free_notify call in end_swap_bio_read to remove duplicated memory between zram and memory. However, with the introduction of rw_page in zram: 8c7f01025f7b ("zram: implement rw_page operation of zram"), it became void because rw_page doesn't need bio. Memory footprint is really important in embedded platforms which have small memory, for example, 512M) recently because it could start to kill processes if memory footprint exceeds some threshold by LMK or some similar memory management modules. This patch restores the function for rw_page, thereby eliminating this duplication. Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: karam.lee <karam.lee@lge.com> Cc: <sangseok.lee@lge.com> Cc: Chan Jeong <chan.jeong@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-03-22 15:36:02 -07:00
Joe Perches	1170532bb4	mm: convert printk(KERN_<LEVEL> to pr_<level> Most of the mm subsystem uses pr_<level> so make it consistent. Miscellanea: - Realign arguments - Add missing newline to format - kmemleak-test.c has a "kmemleak: " prefix added to the "Kmemleak testing" logging message via pr_fmt Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Tejun Heo <tj@kernel.org> [percpu] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-03-17 15:09:34 -07:00
Kent Overstreet	6cf66b4caf	fs: use helper bio_add_page() instead of open coding on bi_io_vec Call pre-defined helper bio_add_page() instead of open coding for iterating through bi_io_vec[]. Doing that, it's possible to make some parts in filesystems and mm/page_io.c simpler than before. Acked-by: Dave Kleikamp <shaggy@kernel.org> Cc: Christoph Hellwig <hch@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> [dpark: add more description in commit message] Signed-off-by: Dongsu Park <dpark@posteo.net> Signed-off-by: Ming Lin <ming.l@ssi.samsung.com> Signed-off-by: Jens Axboe <axboe@fb.com>	2015-08-13 12:32:00 -06:00
Christoph Hellwig	4246a0b63b	block: add a bi_error field to struct bio Currently we have two different ways to signal an I/O error on a BIO: (1) by clearing the BIO_UPTODATE flag (2) by returning a Linux errno value to the bi_end_io callback The first one has the drawback of only communicating a single possible error (-EIO), and the second one has the drawback of not beeing persistent when bios are queued up, and are not passed along from child to parent bio in the ever more popular chaining scenario. Having both mechanisms available has the additional drawback of utterly confusing driver authors and introducing bugs where various I/O submitters only deal with one of them, and the others have to add boilerplate code to deal with both kinds of error returns. So add a new bi_error field to store an errno value directly in struct bio and remove the existing mechanisms to clean all this up. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: NeilBrown <neilb@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>	2015-07-29 08:55:15 -06:00
Christoph Hellwig	343df3c79c	suspend: simplify block I/O handling Stop abusing struct page functionality and the swap end_io handler, and instead add a modified version of the blk-lib.c bio_batch helpers. Also move the block I/O code into swap.c as they are directly tied into each other. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Pavel Machek <pavel@ucw.cz> Tested-by: Ming Lin <mlin@kernel.org> Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net> Signed-off-by: Jens Axboe <axboe@fb.com>	2015-05-19 09:19:59 -06:00
Omar Sandoval	22c6186ece	direct_IO: remove rw from a_ops->direct_IO() Now that no one is using rw, remove it completely. Signed-off-by: Omar Sandoval <osandov@osandov.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2015-04-11 22:29:45 -04:00
Christoph Hellwig	e2e40f2c1e	fs: move struct kiocb to fs.h struct kiocb now is a generic I/O container, so move it to fs.h. Also do a #include diet for aio.h while we're at it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2015-03-25 20:28:11 -04:00
Christoph Hellwig	66ee59af63	fs: remove ki_nbytes There is no need to pass the total request length in the kiocb, as we already get passed in through the iov_iter argument. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2015-03-12 23:50:23 -04:00
Al Viro	05afcb77eb	new helper: iov_iter_bvec() similar to iov_iter_kvec(), for ITER_BVEC ones Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2015-01-29 00:13:11 -05:00
Al Viro	05064084e8	fix __swap_writepage() compile failure on old gcc versions Tetsuo Handa wrote: "Commit 62a8067a7f35 ("bio_vec-backed iov_iter") introduced an unnamed union inside a struct which gcc-4.4.7 cannot handle. Name the unnamed union as u in order to fix build failure" Let's do this instead: there is only one place in the entire tree that steps into this breakage. Anon structs and unions work in older gcc versions; as the matter of fact, we have those in the tree - see e.g. struct ieee80211_tx_info in include/net/mac80211.h What doesn't work is handling their initializers: struct { int a; union { int b; char c; }; } x[2] = {{.a = 1, .c = 'a'}, {.a = 0, .b = 1}}; is the obvious syntax for initializer, perfectly fine for C11 and handled correctly by gcc-4.7 or later. Earlier versions, though, break on it - declaration is fine and so's access to fields (i.e. x[0].c = 'a'; would produce the right code), but members of the anon structs and unions are not inserted into the right namespace. Tellingly, those older versions will not barf on struct {int a; struct {int a;};}; - looks like they just have it hacked up somewhere around the handling of . and -> instead of doing the right thing. The easiest way to deal with that crap is to turn initialization of those fields (in the only place where we have such initializer of iov_iter) into plain assignment. Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2014-06-14 19:30:48 -05:00
Linus Torvalds	16b9057804	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs updates from Al Viro: "This the bunch that sat in -next + lock_parent() fix. This is the minimal set; there's more pending stuff. In particular, I really hope to get acct.c fixes merged this cycle - we need that to deal sanely with delayed-mntput stuff. In the next pile, hopefully - that series is fairly short and localized (kernel/acct.c, fs/super.c and fs/namespace.c). In this pile: more iov_iter work. Most of prereqs for ->splice_write with sane locking order are there and Kent's dio rewrite would also fit nicely on top of this pile" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (70 commits) lock_parent: don't step on stale ->d_parent of all-but-freed one kill generic_file_splice_write() ceph: switch to iter_file_splice_write() shmem: switch to iter_file_splice_write() nfs: switch to iter_splice_write_file() fs/splice.c: remove unneeded exports ocfs2: switch to iter_file_splice_write() ->splice_write() via ->write_iter() bio_vec-backed iov_iter optimize copy_page_{to,from}_iter() bury generic_file_aio_{read,write} lustre: get rid of messing with iovecs ceph: switch to ->write_iter() ceph_sync_direct_write: stop poking into iov_iter guts ceph_sync_read: stop poking into iov_iter guts new helper: copy_page_from_iter() fuse: switch to ->write_iter() btrfs: switch to ->write_iter() ocfs2: switch to ->write_iter() xfs: switch to ->write_iter() ...	2014-06-12 10:30:18 -07:00
Matthew Wilcox	dd6bd0d9c7	swap: use bdev_read_page() / bdev_write_page() By calling the device driver to write the page directly, we avoid allocating a BIO, which allows us to free memory without allocating memory. [akpm@linux-foundation.org: fix used-uninitialized bug] Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Dheeraj Reddy <dheeraj.reddy@intel.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2014-06-04 16:54:02 -07:00
Al Viro	62a8067a7f	bio_vec-backed iov_iter New variant of iov_iter - ITER_BVEC in iter->type, backed with bio_vec array instead of iovec one. Primitives taught to deal with such beasts, __swap_write() switched to using that kind of iov_iter. Note that bio_vec is just a <page, offset, length> triple - there's nothing block-specific about it. I've left the definition where it was, but took it from under ifdef CONFIG_BLOCK. Next target: ->splice_write()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2014-05-06 17:39:45 -04:00
Al Viro	71d8e532b1	start adding the tag to iov_iter For now, just use the same thing we pass to ->direct_IO() - it's all iovec-based at the moment. Pass it explicitly to iov_iter_init() and account for kvec vs. iovec in there, by the same kludge NFS ->direct_IO() uses. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2014-05-06 17:32:49 -04:00
Al Viro	d8d3d94b80	pass iov_iter to ->direct_IO() unmodified, for now Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2014-05-06 17:32:44 -04:00
Linus Torvalds	f568849eda	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block Pull core block IO changes from Jens Axboe: "The major piece in here is the immutable bio_ve series from Kent, the rest is fairly minor. It was supposed to go in last round, but various issues pushed it to this release instead. The pull request contains: - Various smaller blk-mq fixes from different folks. Nothing major here, just minor fixes and cleanups. - Fix for a memory leak in the error path in the block ioctl code from Christian Engelmayer. - Header export fix from CaiZhiyong. - Finally the immutable biovec changes from Kent Overstreet. This enables some nice future work on making arbitrarily sized bios possible, and splitting more efficient. Related fixes to immutable bio_vecs: - dm-cache immutable fixup from Mike Snitzer. - btrfs immutable fixup from Muthu Kumar. - bio-integrity fix from Nic Bellinger, which is also going to stable" * 'for-3.14/core' of git://git.kernel.dk/linux-block: (44 commits) xtensa: fixup simdisk driver to work with immutable bio_vecs block/blk-mq-cpu.c: use hotcpu_notifier() blk-mq: for_each_* macro correctness block: Fix memory leak in rw_copy_check_uvector() handling bio-integrity: Fix bio_integrity_verify segment start bug block: remove unrelated header files and export symbol blk-mq: uses page->list incorrectly blk-mq: use __smp_call_function_single directly btrfs: fix missing increment of bi_remaining Revert "block: Warn and free bio if bi_end_io is not set" block: Warn and free bio if bi_end_io is not set blk-mq: fix initializing request's start time block: blk-mq: don't export blk_mq_free_queue() block: blk-mq: make blk_sync_queue support mq block: blk-mq: support draining mq queue dm cache: increment bi_remaining when bi_end_io is restored block: fixup for generic bio chaining block: Really silence spurious compiler warnings block: Silence spurious compiler warnings block: Kill bio_pair_split() ...	2014-01-30 11:19:05 -08:00
Sasha Levin	309381feae	mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE Most of the VM_BUG_ON assertions are performed on a page. Usually, when one of these assertions fails we'll get a BUG_ON with a call stack and the registers. I've recently noticed based on the requests to add a small piece of code that dumps the page to various VM_BUG_ON sites that the page dump is quite useful to people debugging issues in mm. This patch adds a VM_BUG_ON_PAGE(cond, page) which beyond doing what VM_BUG_ON() does, also dumps the page before executing the actual BUG_ON. [akpm@linux-foundation.org: fix up includes] Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2014-01-23 16:36:50 -08:00
Kent Overstreet	4f024f3797	block: Abstract out bvec iterator Immutable biovecs are going to require an explicit iterator. To implement immutable bvecs, a later patch is going to add a bi_bvec_done member to this struct; for now, this patch effectively just renames things. Signed-off-by: Kent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "Ed L. Cashin" <ecashin@coraid.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Lars Ellenberg <drbd-dev@lists.linbit.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Yehuda Sadeh <yehuda@inktank.com> Cc: Sage Weil <sage@inktank.com> Cc: Alex Elder <elder@inktank.com> Cc: ceph-devel@vger.kernel.org Cc: Joshua Morris <josh.h.morris@us.ibm.com> Cc: Philip Kelleher <pjk1939@linux.vnet.ibm.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Neil Brown <neilb@suse.de> Cc: Alasdair Kergon <agk@redhat.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: dm-devel@redhat.com Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux390@de.ibm.com Cc: Boaz Harrosh <bharrosh@panasas.com> Cc: Benny Halevy <bhalevy@tonian.com> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Nicholas A. Bellinger" <nab@linux-iscsi.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Chris Mason <chris.mason@fusionio.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: Jaegeuk Kim <jaegeuk.kim@samsung.com> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Dave Kleikamp <shaggy@kernel.org> Cc: Joern Engel <joern@logfs.org> Cc: Prasad Joshi <prasadjoshi.linux@gmail.com> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: KONISHI Ryusuke <konishi.ryusuke@lab.ntt.co.jp> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Ben Myers <bpm@sgi.com> Cc: xfs@oss.sgi.com Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Guo Chao <yan@linux.vnet.ibm.com> Cc: Tejun Heo <tj@kernel.org> Cc: Asai Thambi S P <asamymuthupa@micron.com> Cc: Selvan Mani <smani@micron.com> Cc: Sam Bradshaw <sbradshaw@micron.com> Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: "Roger Pau Monné" <roger.pau@citrix.com> Cc: Jan Beulich <jbeulich@suse.com> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Ian Campbell <Ian.Campbell@citrix.com> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Jerome Marchand <jmarchand@redhat.com> Cc: Joe Perches <joe@perches.com> Cc: Peng Tao <tao.peng@emc.com> Cc: Andy Adamson <andros@netapp.com> Cc: fanchaoting <fanchaoting@cn.fujitsu.com> Cc: Jie Liu <jeff.liu@oracle.com> Cc: Sunil Mushran <sunil.mushran@gmail.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Namjae Jeon <namjae.jeon@samsung.com> Cc: Pankaj Kumar <pankaj.km@samsung.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: Mel Gorman <mgorman@suse.de>6	2013-11-23 22:33:47 -08:00
Kent Overstreet	73a7075e3f	aio: Kill aio_rw_vect_retry() This code doesn't serve any purpose anymore, since the aio retry infrastructure has been removed. This change should be safe because aio_read/write are also used for synchronous IO, and called from do_sync_read()/do_sync_write() - and there's no looping done in the sync case (the read and write syscalls). Signed-off-by: Kent Overstreet <koverstreet@google.com> Cc: Zach Brown <zab@redhat.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Jens Axboe <axboe@kernel.dk> Cc: Asai Thambi S P <asamymuthupa@micron.com> Cc: Selvan Mani <smani@micron.com> Cc: Sam Bradshaw <sbradshaw@micron.com> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Benjamin LaHaise <bcrl@kvack.org> Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>	2013-07-30 11:53:12 -04:00
Minchan Kim	b430e9d1c6	mm: remove compressed copy from zram in-memory Swap subsystem does lazy swap slot free with expecting the page would be swapped out again so we can avoid unnecessary write. But the problem in in-memory swap(ex, zram) is that it consumes memory space until vm_swap_full(ie, used half of all of swap device) condition meet. It could be bad if we use multiple swap device, small in-memory swap and big storage swap or in-memory swap alone. This patch makes swap subsystem free swap slot as soon as swap-read is completed and make the swapcache page dirty so the page should be written out the swap device to reclaim it. It means we never lose it. I tested this patch with kernel compile workload. 1. before compile time : 9882.42 zram max wasted space by fragmentation: 13471881 byte memory space consumed by zram: 174227456 byte the number of slot free notify: 206684 2. after compile time : 9653.90 zram max wasted space by fragmentation: 11805932 byte memory space consumed by zram: 154001408 byte the number of slot free notify: 426972 [akpm@linux-foundation.org: tweak comment text] [artem.savkov@gmail.com: fix BUG due to non-swapcache pages in end_swap_bio_read()] [akpm@linux-foundation.org: invert unlikely() test, augment comment, 80-col cleanup] Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com> Signed-off-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Artem Savkov <artem.savkov@gmail.com> Cc: Hugh Dickins <hughd@google.com> Cc: Seth Jennings <sjenning@linux.vnet.ibm.com> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Konrad Rzeszutek Wilk <konrad@darnok.org> Cc: Shaohua Li <shli@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2013-07-03 16:07:26 -07:00
Linus Torvalds	4de13d7aa8	Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block Pull block core updates from Jens Axboe: - Major bit is Kents prep work for immutable bio vecs. - Stable candidate fix for a scheduling-while-atomic in the queue bypass operation. - Fix for the hang on exceeded rq->datalen 32-bit unsigned when merging discard bios. - Tejuns changes to convert the writeback thread pool to the generic workqueue mechanism. - Runtime PM framework, SCSI patches exists on top of these in James' tree. - A few random fixes. * 'for-3.10/core' of git://git.kernel.dk/linux-block: (40 commits) relay: move remove_buf_file inside relay_close_buf partitions/efi.c: replace useless kzalloc's by kmalloc's fs/block_dev.c: fix iov_shorten() criteria in blkdev_aio_read() block: fix max discard sectors limit blkcg: fix "scheduling while atomic" in blk_queue_bypass_start Documentation: cfq-iosched: update documentation help for cfq tunables writeback: expose the bdi_wq workqueue writeback: replace custom worker pool implementation with unbound workqueue writeback: remove unused bdi_pending_list aoe: Fix unitialized var usage bio-integrity: Add explicit field for owner of bip_buf block: Add an explicit bio flag for bios that own their bvec block: Add bio_alloc_pages() block: Convert some code to bio_for_each_segment_all() block: Add bio_for_each_segment_all() bounce: Refactor __blk_queue_bounce to not use bi_io_vec raid1: use bio_copy_data() pktcdvd: Use bio_reset() in disabled code to kill bi_idx usage pktcdvd: use bio_copy_data() block: Add bio_copy_data() ...	2013-05-08 10:13:35 -07:00

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