Moussa A. Ba 398499d5f3 pagemap clear_refs: modify to specify anon or mapped vma clearing ...

The patch makes the clear_refs more versatile in adding the option to
select anonymous pages or file backed pages for clearing.  This addition
has a measurable impact on user space application performance as it
decreases the number of pagewalks in scenarios where one is only
interested in a specific type of page (anonymous or file mapped).

The patch adds anonymous and file backed filters to the clear_refs interface.

echo 1 > /proc/PID/clear_refs resets the bits on all pages
echo 2 > /proc/PID/clear_refs resets the bits on anonymous pages only
echo 3 > /proc/PID/clear_refs resets the bits on file backed pages only

Any other value is ignored

Signed-off-by: Moussa A. Ba <moussa.a.ba@gmail.com>
Signed-off-by: Jared E. Hulbert <jaredeh@gmail.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2009-09-22 07:17:33 -07:00

..

9p

9p: remove unnecessary v9fses->options which duplicates the mount string

2009-08-17 16:42:28 -05:00

adfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

affs

affs: add ->sync_fs

2009-06-11 21:36:14 -04:00

afs

const: make file_lock_operations const

2009-09-22 07:17:25 -07:00

autofs

switch follow_down()

2009-06-11 21:36:01 -04:00

autofs4

autofs4 - fix missed case when changing to use struct path

2009-08-31 17:44:05 -10:00

befs

const: mark remaining super_operations const

2009-09-22 07:17:24 -07:00

bfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

btrfs

const: mark remaining inode_operations as const

2009-09-22 07:17:24 -07:00

cachefiles

enforce ->sync_fs is only called for rw superblock

2009-06-11 21:36:06 -04:00

cifs

const: mark remaining inode_operations as const

2009-09-22 07:17:24 -07:00

coda

splice: implement default splice_read method

2009-05-11 14:13:10 +02:00

configfs

writeback: add name to backing_dev_info

2009-09-11 09:20:26 +02:00

cramfs

fs/cramfs: return f_fsid for statfs(2)

2009-04-02 19:05:08 -07:00

debugfs

debugfs: use specified mode to possibly mark files read/write only

2009-06-15 21:30:28 -07:00

devpts

devpts: remove module-related code

2009-06-24 08:15:24 -04:00

dlm

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm

2009-09-18 09:19:10 -07:00

ecryptfs

const: mark remaining address_space_operations const

2009-09-22 07:17:24 -07:00

efs

get rid of BKL in fs/efs

2009-06-17 00:36:36 -04:00

exofs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

exportfs

…

ext2

const: make block_device_operations const

2009-09-22 07:17:25 -07:00

ext3

const: make struct super_block::s_qcop const

2009-09-22 07:17:24 -07:00

ext4

const: make struct super_block::s_qcop const

2009-09-22 07:17:24 -07:00

fat

fat: Opencode sync_page_range_nolock()

2009-09-14 17:08:17 +02:00

freevxfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

fscache

FS-Cache: Fixup renamed filenames in comments in internal.h

2009-05-27 10:20:13 -07:00

fuse

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

2009-09-18 09:23:03 -07:00

gfs2

Merge branch 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block

2009-09-14 17:55:15 -07:00

hfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

hfsplus

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

hostfs

hostfs: set maximum filesize in superblock for proper LFS support

2009-06-30 18:56:03 -07:00

hpfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

hppfs

hppfs: hppfs_read_file() may return -ERROR

2009-04-02 19:04:53 -07:00

hugetlbfs

writeback: add name to backing_dev_info

2009-09-11 09:20:26 +02:00

isofs

isofs: fix Joliet regression

2009-07-10 19:18:59 -07:00

jbd

jbd: Annotate transaction start also for journal_restart()

2009-09-16 17:44:10 +02:00

jbd2

writeback: get rid of wbc->for_writepages

2009-09-16 15:16:18 +02:00

jffs2

const: mark remaining export_operations const

2009-09-22 07:17:24 -07:00

jfs

jffs2/jfs/xfs: switch over to 'check_acl' rather than 'permission()'

2009-09-08 11:09:04 -07:00

lockd

const: make lock_manager_operations const

2009-09-22 07:17:25 -07:00

minix

Making fs/minix/minix.h double including safe

2009-06-22 11:34:42 -07:00

ncpfs

NLS: update handling of Unicode

2009-06-15 21:44:43 -07:00

nfs

const: make file_lock_operations const

2009-09-22 07:17:25 -07:00

nfs_common

…

nfsd

const: make lock_manager_operations const

2009-09-22 07:17:25 -07:00

nilfs2

const: mark remaining inode_operations as const

2009-09-22 07:17:24 -07:00

nls

NLS: update handling of Unicode

2009-06-15 21:44:43 -07:00

notify

inotify: update the group mask on mark addition

2009-08-28 12:51:14 -04:00

ntfs

ntfs: Use new syncing helpers and update comments

2009-09-14 17:08:16 +02:00

ocfs2

const: make struct super_block::s_qcop const

2009-09-22 07:17:24 -07:00

omfs

const: mark remaining inode_operations as const

2009-09-22 07:17:24 -07:00

openpromfs

…

partitions

const: make block_device_operations const

2009-09-22 07:17:25 -07:00

proc

pagemap clear_refs: modify to specify anon or mapped vma clearing

2009-09-22 07:17:33 -07:00

qnx4

fs/qnx4: sanitize includes

2009-06-11 21:36:12 -04:00

quota

const: make struct super_block::s_qcop const

2009-09-22 07:17:24 -07:00

ramfs

writeback: add name to backing_dev_info

2009-09-11 09:20:26 +02:00

reiserfs

const: make struct super_block::s_qcop const

2009-09-22 07:17:24 -07:00

romfs

const: mark remaining inode_operations as const

2009-09-22 07:17:24 -07:00

smbfs

push BKL down into ->put_super

2009-06-11 21:36:07 -04:00

squashfs

const: mark remaining super_operations const

2009-09-22 07:17:24 -07:00

sysfs

Merge branch 'writeback' of git://git.kernel.dk/linux-2.6-block

2009-09-11 09:17:05 -07:00

sysv

get rid of BKL in fs/sysv

2009-06-17 00:36:37 -04:00

ubifs

const: mark remaining address_space_operations const

2009-09-22 07:17:24 -07:00

udf

udf: Fix possible corruption when close races with write

2009-09-14 19:13:01 +02:00

ufs

ufs: sector_t cannot be negative

2009-06-18 13:03:46 -07:00

xfs

const: mark remaining super_operations const

2009-09-22 07:17:24 -07:00

aio.c

eventfd: revised interface and cleanups

2009-06-30 18:55:58 -07:00

anon_inodes.c

fs: Provide empty .set_page_dirty() aop for anon inodes

2009-06-18 14:46:10 +02:00

attr.c

…

bad_inode.c

…

binfmt_aout.c

…

binfmt_elf_fdpic.c

elf_core_dump: use rcu_read_lock() to access ->real_parent

2009-06-18 13:03:52 -07:00

binfmt_elf.c

binfmt_elf: fix PT_INTERP bss handling

2009-09-10 20:11:12 +10:00

binfmt_em86.c

…

binfmt_flat.c

flat: fix uninitialized ptr with shared libs

2009-08-07 10:39:57 -07:00

binfmt_misc.c

…

binfmt_script.c

…

binfmt_som.c

Don't crap into descriptor table in binfmt_som

2009-03-31 23:00:28 -04:00

bio-integrity.c

block: Create bip slabs with embedded integrity vectors

2009-07-01 10:56:25 +02:00

bio.c

block: fix sg SG_DXFER_TO_FROM_DEV regression

2009-07-10 20:31:53 +02:00

block_dev.c

const: make block_device_operations const

2009-09-22 07:17:25 -07:00

buffer.c

writeback: switch to per-bdi threads for flushing data

2009-09-11 09:20:25 +02:00

char_dev.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6

2009-09-11 09:19:35 -07:00

compat_binfmt_elf.c

…

compat_ioctl.c

compat_ioctl: hook up compat handler for FIEMAP ioctl

2009-08-07 10:39:56 -07:00

compat.c

exec: do not sleep in TASK_TRACED under ->cred_guard_mutex

2009-09-05 11:30:42 -07:00

dcache.c

sched: Pull up the might_sleep() check into cond_resched()

2009-07-18 15:51:44 +02:00

dcookies.c

…

direct-io.c

block: Do away with the notion of hardsect_size

2009-05-22 23:22:54 +02:00

drop_caches.c

mm: remove __invalidate_mapping_pages variant

2009-06-16 19:47:43 -07:00

eventfd.c

eventfd: revised interface and cleanups

2009-06-30 18:55:58 -07:00

eventpoll.c

epoll: fix nested calls support

2009-06-18 13:03:41 -07:00

exec.c

perf: Do the big rename: Performance Counters -> Performance Events

2009-09-21 14:28:04 +02:00

fcntl.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

fifo.c

…

file_table.c

fs: move mark_files_ro into file_table.c

2009-06-11 21:36:02 -04:00

file.c

…

filesystems.c

fs: Mark get_filesystem_list() as __init function.

2009-04-20 23:02:52 -04:00

fs_struct.c

Get rid of indirect include of fs_struct.h

2009-03-31 23:00:27 -04:00

fs-writeback.c

writeback: fix possible bdi writeback refcounting problem

2009-09-16 15:18:53 +02:00

generic_acl.c

New helper - current_umask()

2009-03-31 23:00:26 -04:00

inode.c

const: mark remaining inode_operations as const

2009-09-22 07:17:24 -07:00

internal.h

Trim a bit of crap from fs.h

2009-06-11 21:36:07 -04:00

ioctl.c

fs: Add new pre-allocation ioctls to vfs for compatibility with legacy xfs ioctls

2009-06-24 08:15:27 -04:00

ioprio.c

…

Kconfig

fs/Kconfig: move nilfs2 outside misc filesystems

2009-09-14 18:27:16 +09:00

Kconfig.binfmt

…

libfs.c

vfs: make get_sb_pseudo set s_maxbytes to value that can be cast to signed

2009-08-18 16:31:12 -07:00

locks.c

const: make lock_manager_operations const

2009-09-22 07:17:25 -07:00

Makefile

nilfs2: update makefile and Kconfig

2009-04-07 08:31:16 -07:00

mbcache.c

…

mpage.c

ext4: Properly initialize the buffer_head state

2009-05-13 15:13:42 -04:00

namei.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6

2009-09-11 08:55:49 -07:00

namespace.c

vfs: mnt_want_write_file(): fix special file handling

2009-08-07 10:39:56 -07:00

nfsctl.c

…

no-block.c

…

open.c

CRED: Add some configurable debugging [try #6]

2009-09-02 21:29:01 +10:00

pipe.c

lockdep: Fix lockdep annotation for pipe_double_lock()

2009-07-22 21:14:14 +02:00

pnode.c

…

pnode.h

…

posix_acl.c

…

read_write.c

splice: implement default splice_read method

2009-05-11 14:13:10 +02:00

read_write.h

…

readdir.c

…

select.c

poll/select: initialize triggered field of struct poll_wqueues

2009-08-15 18:40:11 -07:00

seq_file.c

seq_file: add function to write binary data

2009-06-18 13:03:57 -07:00

signalfd.c

…

splice.c

Merge branch 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block

2009-09-14 17:55:15 -07:00

stack.c

…

stat.c

kill vfs_stat_fd / vfs_lstat_fd

2009-04-20 23:02:52 -04:00

super.c

const: mark remaining super_operations const

2009-09-22 07:17:24 -07:00

sync.c

fs: Assign bdi in super_block

2009-09-16 15:18:51 +02:00

timerfd.c

…

utimes.c

…

xattr_acl.c

…

xattr.c

VFS: Factor out part of vfs_setxattr so it can be called from the SELinux hook for inode_setsecctx.

2009-09-10 10:11:22 +10:00