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
..
acl.c
async-thread.c	Merge branch 'pm-sleep' into pm-for-linus	2011-12-25 23:42:20 +01:00
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: Fix up 32/64-bit compatibility for new ioctls	2011-11-20 07:42:13 -05:00
backref.h
btrfs_inode.h	Btrfs: fix our reservations for updating an inode when completing io	2011-11-08 15:47:34 -05:00
compat.h
compression.c
compression.h
ctree.c	Btrfs: fix tree corruption after multi-thread snapshots and inode_cache flush	2011-11-15 09:53:28 -05:00
ctree.h	Btrfs: deal with enospc from dirtying inodes properly	2011-12-15 11:04:21 -05:00
delayed-inode.c	Merge branches 'for-linus' and 'for-linus-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2011-12-16 12:15:50 -08:00
delayed-inode.h
delayed-ref.c
delayed-ref.h
dir-item.c
disk-io.c	mm: compaction: introduce sync-light migration for use by compaction	2012-01-12 20:13:09 -08:00
disk-io.h
export.c
export.h
extent_io.c	Btrfs: drop spin lock when memory alloc fails	2011-12-08 08:55:47 -05:00
extent_io.h	btrfs: mirror_num should be int, not u64	2011-11-20 07:42:14 -05:00
extent_map.c
extent_map.h
extent-tree.c	Merge branches 'for-linus' and 'for-linus-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2011-12-16 12:15:50 -08:00
file-item.c
file.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
free-space-cache.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
free-space-cache.h
hash.h
inode-item.c
inode-map.c	Btrfs: fix no reserved space for writing out inode cache	2011-11-10 20:45:04 -05:00
inode-map.h
inode.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
ioctl.c	vfs: mnt_drop_write_file()	2012-01-03 22:52:40 -05:00
ioctl.h
Kconfig
locking.c
locking.h
lzo.c
Makefile
ordered-data.c
ordered-data.h
orphan.c
print-tree.c
print-tree.h
reada.c
relocation.c	Btrfs: fix how we do delalloc reservations and how we free reservations on error	2011-12-15 11:04:22 -05:00
root-tree.c
scrub.c	Btrfs: fix num_workers_starting bug and other bugs in async thread	2011-12-15 11:04:21 -05:00
struct-funcs.c
super.c	vfs: switch ->show_options() to struct dentry *	2012-01-06 23:19:54 -05:00
sysfs.c
transaction.c	Btrfs: fix tree corruption after multi-thread snapshots and inode_cache flush	2011-11-15 09:53:28 -05:00
transaction.h
tree-defrag.c
tree-log.c
tree-log.h
version.h
volumes.c	Btrfs: unplug every once and a while	2011-12-15 15:38:41 -05:00
volumes.h	Btrfs: fix barrier flushes	2011-11-20 07:21:14 -05:00
xattr.c
xattr.h
zlib.c