Liu Bo 2cac13e41b Btrfs: fix trim 0 bytes after a device delete ...

A user reported a bug of btrfs's trim, that is we will trim 0 bytes
after a device delete.

The reproducer:

$ mkfs.btrfs disk1
$ mkfs.btrfs disk2
$ mount disk1 /mnt
$ fstrim -v /mnt
$ btrfs device add disk2 /mnt
$ btrfs device del disk1 /mnt
$ fstrim -v /mnt

This is because after we delete the device, the block group may start from
a non-zero place, which will confuse trim to discard nothing.

Reported-by: Lutz Euler <lutz.euler@freenet.de>
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>

2012-02-15 16:40:23 +01:00

..

acl.c

Btrfs: fix return value of btrfs_get_acl()

2011-10-20 18:10:47 +02:00

async-thread.c

Btrfs: fix worker lock misuse in find_worker

2011-12-23 07:53:00 -05:00

async-thread.h

Btrfs: fix num_workers_starting bug and other bugs in async thread

2011-12-15 11:04:21 -05:00

backref.c

Btrfs: avoid positive number with ERR_PTR

2012-02-15 16:40:23 +01:00

backref.h

Btrfs: added btrfs_find_all_roots()

2012-01-04 16:26:38 +01:00

btrfs_inode.h

Btrfs: add a delalloc mutex to inodes for delalloc reservations

2012-01-16 15:29:43 -05:00

check-integrity.c

Btrfs: fix warning for 32-bit build of fs/btrfs/check-integrity.c

2012-01-26 15:01:11 -05:00

check-integrity.h

Btrfs: add optional integrity check code

2011-12-21 19:14:09 +01:00

compat.h

…

compression.c

btrfs: separate superblock items out of fs_info

2011-11-06 03:04:01 -05:00

compression.h

btrfs: rename variables clashing with global function names

2011-05-02 13:57:19 +02:00

ctree.c

Btrfs: mark delayed refs as for cow

2011-12-22 16:22:27 +01:00

ctree.h

Merge branch 'integrity-check-patch-v2' of git://btrfs.giantdisaster.de/git/btrfs into integration

2012-01-16 15:27:58 -05:00

delayed-inode.c

Btrfs: space leak tracepoints

2012-01-16 15:29:43 -05:00

delayed-inode.h

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

delayed-ref.c

Btrfs: add waitqueue instead of doing busy waiting for more delayed refs

2012-01-04 16:12:48 +01:00

delayed-ref.h

Btrfs: add waitqueue instead of doing busy waiting for more delayed refs

2012-01-04 16:12:48 +01:00

dir-item.c

Btrfs: remove redundant code for dir item lookup

2011-08-01 14:30:48 -04:00

disk-io.c

btrfs: Sector Size check during Mount

2012-02-15 16:40:22 +01:00

disk-io.h

Merge branch 'for-chris' of git://github.com/sensille/linux into integration

2011-11-06 03:05:08 -05:00

export.c

Merge branch 'ino-alloc' of git://repo.or.cz/linux-btrfs-devel into inode_numbers

2011-05-21 09:27:38 -04:00

export.h

…

extent_io.c

Btrfs: Check for NULL page in extent_range_uptodate

2012-01-26 15:01:11 -05:00

extent_io.h

Btrfs: add nested locking mode for paths

2012-01-04 16:12:29 +01:00

extent_map.c

Btrfs: clean up code for merging extent maps

2011-08-01 14:30:50 -04:00

extent_map.h

btrfs: drop gfp parameter from alloc_extent_map

2011-05-02 13:57:21 +02:00

extent-tree.c

Btrfs: fix trim 0 bytes after a device delete

2012-02-15 16:40:23 +01:00

file-item.c

btrfs: separate superblock items out of fs_info

2011-11-06 03:04:01 -05:00

file.c

Btrfs: return the internal error unchanged if btrfs_get_extent_fiemap() call failed for SEEK_DATA/SEEK_HOLE inquiry

2012-02-15 16:40:23 +01:00

free-space-cache.c

Btrfs: advance window_start if we're using a bitmap

2012-01-26 15:01:12 -05:00

free-space-cache.h

btrfs: remove all unused functions

2011-05-06 12:34:03 +02:00

hash.h

Btrfs: remove crc32c.h and use libcrc32c directly.

2009-06-10 11:29:53 -04:00

inode-item.c

Btrfs: BUG_ON is deleted from the caller of btrfs_truncate_item & btrfs_extend_item

2011-05-23 13:24:39 -04:00

inode-map.c

Btrfs: space leak tracepoints

2012-01-16 15:29:43 -05:00

inode-map.h

Btrfs: Support reading/writing on disk free ino cache

2011-04-25 16:46:11 +08:00

inode.c

Btrfs: fix reservations in btrfs_page_mkwrite

2012-01-27 10:44:44 -05:00

ioctl.c

Btrfs: do not defrag a file partially

2012-01-26 15:01:12 -05:00

ioctl.h

Btrfs: add balance progress reporting

2012-01-16 22:04:49 +02:00

Kconfig

Btrfs: add config option to enable btrfs integrity check

2011-12-21 19:14:16 +01:00

locking.c

Btrfs: add nested locking mode for paths

2012-01-04 16:12:29 +01:00

locking.h

Btrfs: switch the btrfs tree locks to reader/writer

2011-07-27 12:46:46 -04:00

lzo.c

Btrfs: Avoid accessing unmapped kernel address

2011-02-16 15:37:58 -05:00

Makefile

Merge branch 'integrity-check-patch-v2' of git://btrfs.giantdisaster.de/git/btrfs into integration

2012-01-16 15:27:58 -05:00

ordered-data.c

Btrfs: add initial tracepoint support for btrfs

2011-03-28 05:37:33 -04:00

ordered-data.h

btrfs: Allow to add new compression algorithm

2010-12-22 23:15:45 +08:00

orphan.c

Btrfs: fixup return code for btrfs_del_orphan_item

2010-12-09 13:57:15 -05:00

print-tree.c

btrfs: fix oops on failure path

2011-10-20 18:10:50 +02:00

print-tree.h

…

reada.c

Btrfs: rename btrfs_bio multi -> bbio for consistency

2011-11-06 03:11:21 -05:00

relocation.c

Btrfs: add a delalloc mutex to inodes for delalloc reservations

2012-01-16 15:29:43 -05:00

root-tree.c

btrfs: make btrfs_set_root_node void

2011-08-01 14:30:44 -04:00

scrub.c

Merge branch 'integrity-check-patch-v2' of git://btrfs.giantdisaster.de/git/btrfs into integration

2012-01-16 15:27:58 -05:00

struct-funcs.c

Btrfs: stop using highmem for extent_buffers

2011-07-27 12:46:45 -04:00

super.c

Merge branch 'integrity-check-patch-v2' of git://btrfs.giantdisaster.de/git/btrfs into integration

2012-01-16 15:27:58 -05:00

sysfs.c

btrfs: Remove unused sysfs code

2011-06-17 14:54:18 -04:00

transaction.c

Btrfs: space leak tracepoints

2012-01-16 15:29:43 -05:00

transaction.h

Merge branch 'for-chris' of

2011-05-28 07:00:39 -04:00

tree-defrag.c

btrfs: drop unused parameter from btrfs_release_path

2011-05-02 13:57:22 +02:00

tree-log.c

btrfs: Fix busyloops in transaction waiting code

2012-01-26 15:01:11 -05:00

tree-log.h

btrfs: remove unused function prototypes

2011-05-04 14:01:26 +02:00

ulist.c

Btrfs: generic data structure to build unique lists

2011-12-22 16:22:24 +01:00

ulist.h

Btrfs: generic data structure to build unique lists

2011-12-22 16:22:24 +01:00

version.h

…

volumes.c

Btrfs: use larger system chunks

2012-01-16 15:38:24 -05:00

volumes.h

Merge branch 'for-chris' of git://repo.or.cz/linux-btrfs-devel into integration

2012-01-16 15:26:17 -05:00

xattr.c

Btrfs: do not use btrfs_end_transaction_throttle everywhere

2012-01-16 15:28:54 -05:00

xattr.h

fs/vfs/security: pass last path component to LSM on inode creation

2011-02-01 11:12:29 -05:00

zlib.c

zlib: slim down zlib_deflate() workspace when possible

2011-03-22 17:44:17 -07:00