Mel Gorman a6bc32b899 mm: compaction: introduce sync-light migration for use by compaction ...

This patch adds a lightweight sync migrate operation MIGRATE_SYNC_LIGHT
mode that avoids writing back pages to backing storage.  Async compaction
maps to MIGRATE_ASYNC while sync compaction maps to MIGRATE_SYNC_LIGHT.
For other migrate_pages users such as memory hotplug, MIGRATE_SYNC is
used.

This avoids sync compaction stalling for an excessive length of time,
particularly when copying files to a USB stick where there might be a
large number of dirty pages backed by a filesystem that does not support
->writepages.

[aarcange@redhat.com: This patch is heavily based on Andrea's work]
[akpm@linux-foundation.org: fix fs/nfs/write.c build]
[akpm@linux-foundation.org: fix fs/btrfs/disk-io.c build]
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Andy Isaacson <adi@hexapodia.org>
Cc: Nai Xia <nai.xia@gmail.com>
Cc: Johannes Weiner <jweiner@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2012-01-12 20:13:09 -08:00

..

9p

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs

2012-01-10 15:09:01 -08:00

adfs

vfs: switch ->show_options() to struct dentry *

2012-01-06 23:19:54 -05:00

affs

affs: propagate umode_t

2012-01-03 22:55:04 -05:00

afs

switch ->create() to umode_t

2012-01-03 22:54:53 -05:00

autofs4

autofs4: deal with autofs4_write/autofs4_write races

2012-01-11 00:20:12 -05:00

befs

vfs: fix the stupidity with i_dentry in inode destructors

2012-01-03 22:52:40 -05:00

bfs

switch ->create() to umode_t

2012-01-03 22:54:53 -05:00

btrfs

mm: compaction: introduce sync-light migration for use by compaction

2012-01-12 20:13:09 -08:00

cachefiles

fs: move code out of buffer.c

2012-01-03 22:54:07 -05:00

ceph

ceph: d_alloc_root() may fail

2012-01-09 16:36:12 -05:00

cifs

Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-01-08 12:19:57 -08:00

coda

coda: switch coda_cnode_make() to sane API as well, clean coda_lookup()

2012-01-10 11:13:16 -05:00

configfs

configfs: convert to umode_t

2012-01-03 22:54:57 -05:00

cramfs

Merge branches 'vfsmount-guts', 'umode_t' and 'partitions' into Z

2012-01-06 23:15:54 -05:00

debugfs

Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-01-08 12:19:57 -08:00

devpts

devpts: fix double-free on mount failure

2012-01-08 20:19:03 -05:00

dlm

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

2012-01-10 14:55:55 -08:00

ecryptfs

vfs: switch ->show_options() to struct dentry *

2012-01-06 23:19:54 -05:00

efs

vfs: fix the stupidity with i_dentry in inode destructors

2012-01-03 22:52:40 -05:00

exofs

Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd

2012-01-09 12:51:01 -08:00

exportfs

vfs: Add open by file handle support

2011-03-15 02:21:44 -04:00

ext2

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2012-01-09 12:51:21 -08:00

ext3

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2012-01-09 12:51:21 -08:00

ext4

Merge branch 'for_linus' into for_linus_merged

2012-01-10 11:54:07 -05:00

fat

Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

2012-01-09 12:09:47 -08:00

freevxfs

fs: propagate umode_t, misc bits

2012-01-03 22:55:10 -05:00

fscache

FS-Cache: Fix __fscache_uncache_all_inode_pages()'s outer loop

2011-07-21 10:59:16 -07:00

fuse

vfs: switch ->show_options() to struct dentry *

2012-01-06 23:19:54 -05:00

gfs2

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

2012-01-10 14:55:55 -08:00

hfs

vfs: switch ->show_options() to struct dentry *

2012-01-06 23:19:54 -05:00

hfsplus

hfsplus: creation of hidden dir on mount can fail

2012-01-10 17:48:52 -05:00

hostfs

vfs: switch ->show_options() to struct dentry *

2012-01-06 23:19:54 -05:00

hpfs

switch ->mknod() to umode_t

2012-01-03 22:54:54 -05:00

hppfs

vfs: for usbfs, etc. internal vfsmounts ->mnt_sb->s_root == ->mnt_root

2012-01-03 22:52:41 -05:00

hugetlbfs

mm: compaction: introduce sync-light migration for use by compaction

2012-01-12 20:13:09 -08:00

isofs

isofs: inode leak on mount failure

2012-01-09 10:48:11 -05:00

jbd

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2012-01-09 12:51:21 -08:00

jbd2

Merge branch 'for_linus' into for_linus_merged

2012-01-10 11:54:07 -05:00

jffs2

MTD pull for 3.3

2012-01-10 13:45:22 -08:00

jfs

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

2012-01-08 13:10:57 -08:00

lockd

vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb

2012-01-06 23:16:53 -05:00

logfs

MTD pull for 3.3

2012-01-10 13:45:22 -08:00

minix

Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-01-08 12:19:57 -08:00

ncpfs

vfs: switch ->show_options() to struct dentry *

2012-01-06 23:19:54 -05:00

nfs

mm: compaction: introduce sync-light migration for use by compaction

2012-01-12 20:13:09 -08:00

nfs_common

Fix common misspellings

2011-03-31 11:26:23 -03:00

nfsd

Merge branch 'nfs-for-3.3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

2012-01-10 14:57:40 -08:00

nilfs2

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

2012-01-08 13:10:57 -08:00

nls

NLS: raname "maxlen" to "maxout" in UTF conversion routines

2011-11-26 19:58:47 -08:00

notify

vfs: move fsnotify junk to struct mount

2012-01-03 22:57:12 -05:00

ntfs

vfs: switch ->show_options() to struct dentry *

2012-01-06 23:19:54 -05:00

ocfs2

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

2012-01-10 14:55:55 -08:00

omfs

omfs: propagate umode_t

2012-01-03 22:55:01 -05:00

openpromfs

vfs: fix the stupidity with i_dentry in inode destructors

2012-01-03 22:52:40 -05:00

proc

proc: fix null pointer deref in proc_pid_permission()

2012-01-12 20:13:02 -08:00

pstore

pstore: gracefully handle NULL pstore_info functions

2011-11-18 13:49:00 -08:00

qnx4

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

2012-01-08 13:21:22 -08:00

quota

vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb

2012-01-06 23:16:53 -05:00

ramfs

pohmelfs: propagate umode_t

2012-01-03 22:55:07 -05:00

reiserfs

reiserfs: don't lock root inode searching

2012-01-10 16:30:54 -08:00

romfs

MTD pull for 3.3

2012-01-10 13:45:22 -08:00

squashfs

vfs: fix the stupidity with i_dentry in inode destructors

2012-01-03 22:52:40 -05:00

sysfs

sysfs: propagate umode_t

2012-01-03 22:55:03 -05:00

sysv

vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb

2012-01-06 23:16:53 -05:00

ubifs

Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6

2012-01-10 14:57:19 -08:00

udf

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2012-01-09 12:51:21 -08:00

ufs

vfs: switch ->show_options() to struct dentry *

2012-01-06 23:19:54 -05:00

xfs

Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

2012-01-09 12:50:15 -08:00

aio.c

aio: allocate kiocbs in batches

2011-11-02 16:07:03 -07:00

anon_inodes.c

vfs: dont chain pipe/anon/socket on superblock s_inodes list

2011-07-26 12:57:09 -04:00

attr.c

switch is_sxid() to umode_t

2012-01-03 22:55:11 -05:00

bad_inode.c

switch ->mknod() to umode_t

2012-01-03 22:54:54 -05:00

binfmt_aout.c

…

binfmt_elf_fdpic.c

consolidate BINPRM_FLAGS_ENFORCE_NONDUMP handling

2011-07-20 01:43:10 -04:00

binfmt_elf.c

fs: binfmt_elf: create Kconfig variable for PIE randomization

2012-01-10 16:30:51 -08:00

binfmt_em86.c

…

binfmt_flat.c

CRED: Fix load_flat_shared_library() to initialise bprm correctly

2011-05-03 10:10:51 +10:00

binfmt_misc.c

vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb

2012-01-06 23:16:53 -05:00

binfmt_script.c

…

binfmt_som.c

…

bio-integrity.c

fs: add export.h to files using EXPORT_SYMBOL/THIS_MODULE macros

2011-10-31 19:30:31 -04:00

bio.c

bio: change some signed vars to unsigned

2011-11-16 09:21:50 +01:00

block_dev.c

block_dev: Suppress bdev_cache_init() kmemleak warninig

2012-01-10 13:08:55 -05:00

buffer.c

fs: move code out of buffer.c

2012-01-03 22:54:07 -05:00

char_dev.c

char_dev.c: fix up some whitespace errors

2011-12-13 11:18:17 -08:00

compat_binfmt_elf.c

…

compat_ioctl.c

vfs: fix up ENOIOCTLCMD error handling

2012-01-05 15:40:12 -08:00

compat.c

switch open and mkdir syscalls to umode_t

2012-01-03 22:55:19 -05:00

dcache.c

fix shrink_dcache_parent() livelock

2012-01-10 13:06:32 -05:00

dcookies.c

oprofile, dcookies: Fix possible circular locking dependency

2011-05-31 16:33:35 +02:00

direct-io.c

direct-io: merge direct_io_walker into __blockdev_direct_IO

2011-10-28 14:58:58 +02:00

drop_caches.c

vmscan: change shrinker API by passing shrink_control struct

2011-05-25 08:39:26 -07:00

eventfd.c

Docbook: add fs/eventfd.c and fix typos in it

2011-02-21 15:07:04 -08:00

eventpoll.c

epoll: limit paths

2012-01-12 20:13:04 -08:00

exec.c

tracepoint: add tracepoints for debugging oom_score_adj

2012-01-10 16:30:44 -08:00

fcntl.c

userns: rename is_owner_or_cap to inode_owner_or_capable

2011-03-23 19:47:13 -07:00

fhandle.c

vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb

2012-01-06 23:16:53 -05:00

fifo.c

Filesystem: fifo: Fixed coding style issue.

2011-03-21 00:16:09 -04:00

file_table.c

vfs: prevent remount read-only if pending removes

2012-01-06 23:20:13 -05:00

file.c

vfs: avoid large kmalloc()s for the fdtable

2011-04-28 11:28:20 -07:00

filesystems.c

vfs: convert fs_supers to hlist

2012-01-03 22:52:39 -05:00

fs_struct.c

sanitize vfsmount refcounting changes

2011-01-16 13:47:07 -05:00

fs-writeback.c

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

2012-01-10 16:59:59 -08:00

generic_acl.c

switch posix_acl_equiv_mode() to umode_t *

2011-08-01 02:10:06 -04:00

inode.c

mm: account reaped page cache on inode cache pruning

2012-01-10 16:30:42 -08:00

internal.h

vfs: protect remounting superblock read-only

2012-01-06 23:20:12 -05:00

ioctl.c

vfs: fix up ENOIOCTLCMD error handling

2012-01-05 15:40:12 -08:00

ioprio.c

fs: add export.h to files using EXPORT_SYMBOL/THIS_MODULE macros

2011-10-31 19:30:31 -04:00

Kconfig

Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd

2012-01-09 12:51:01 -08:00

Kconfig.binfmt

fs: binfmt_elf: create Kconfig variable for PIE randomization

2012-01-10 16:30:51 -08:00

libfs.c

fs: move code out of buffer.c

2012-01-03 22:54:07 -05:00

locks.c

vfs: fix handling of lock allocation failure in lease-break case

2011-12-26 10:25:26 -08:00

Makefile

Merge branches 'vfsmount-guts', 'umode_t' and 'partitions' into Z

2012-01-06 23:15:54 -05:00

mbcache.c

vmscan: change shrinker API by passing shrink_control struct

2011-05-25 08:39:26 -07:00

mount.h

vfs: keep list of mounts for each superblock

2012-01-06 23:20:12 -05:00

mpage.c

mm/fs: add hooks to support cleancache

2011-05-26 10:01:43 -06:00

namei.c

Merge branches 'vfsmount-guts', 'umode_t' and 'partitions' into Z

2012-01-06 23:15:54 -05:00

namespace.c

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

2012-01-08 13:21:22 -08:00

no-block.c

…

open.c

switch security_path_chmod() to struct path *

2012-01-06 23:16:53 -05:00

pipe.c

pipe: fail cleanly when root tries F_SETPIPE_SZ with big size

2012-01-12 20:13:04 -08:00

pnode.c

vfs: switch pnode.h macros to struct mount *

2012-01-03 22:57:11 -05:00

pnode.h

vfs: switch pnode.h macros to struct mount *

2012-01-03 22:57:11 -05:00

posix_acl.c

vfs: pass all mask flags check_acl and posix_acl_permission

2011-10-28 14:58:54 +02:00

proc_namespace.c

vfs: switch ->show_options() to struct dentry *

2012-01-06 23:19:54 -05:00

read_write.c

Cross Memory Attach

2011-10-31 17:30:44 -07:00

read_write.h

…

readdir.c

…

select.c

select: remove unused MAX_SELECT_SECONDS

2011-03-21 00:16:08 -04:00

seq_file.c

constify seq_file stuff

2012-01-03 22:52:40 -05:00

signalfd.c

…

splice.c

fs: move code out of buffer.c

2012-01-03 22:54:07 -05:00

stack.c

filesystems: add set_nlink()

2011-11-02 12:53:43 +01:00

stat.c

readlinkat: ensure we return ENOENT for the empty pathname for normal lookups

2011-11-02 12:53:42 +01:00

statfs.c

vfs: new helper - vfs_ustat()

2012-01-03 22:53:07 -05:00

super.c

vfs: prevent remount read-only if pending removes

2012-01-06 23:20:13 -05:00

sync.c

fs: move code out of buffer.c

2012-01-03 22:54:07 -05:00

timerfd.c

timerfd: Fix wakeup of processes when timer is cancelled on clock change

2011-06-14 11:46:14 +02:00

utimes.c

userns: rename is_owner_or_cap to inode_owner_or_capable

2011-03-23 19:47:13 -07:00

xattr_acl.c

…

xattr.c

vfs: mnt_drop_write_file()

2012-01-03 22:52:40 -05:00