Laura Abbott a2ac6d40d3 fs/buffer.c: Revoke LRU when trying to drop buffers ... When a buffer is added to the LRU list, a reference is taken which is not dropped until the buffer is evicted from the LRU list. This is the correct behavior, however this LRU reference will prevent the buffer from being dropped. This means that the buffer can't actually be dropped until it is selected for eviction. There's no bound on the time spent on the LRU list, which means that the buffer may be undroppable for very long periods of time. Given that migration involves dropping buffers, the associated page is now unmigratible for long periods of time as well. CMA relies on being able to migrate a specific range of pages, so these these types of failures make CMA significantly less reliable, especially under high filesystem usage. Rather than waiting for the LRU algorithm to eventually kick out the buffer, explicitly remove the buffer from the LRU list when trying to drop it. There is still the possibility that the buffer could be added back on the list, but that indicates the buffer is still in use and would probably have other 'in use' indicates to prevent dropping. Change-Id: I253f4ee2069e190c1115afc421dadd27a7fa87dc Signed-off-by: Laura Abbott <lauraa@codeaurora.org> Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>		2016-06-01 15:20:51 -07:00
..
9p	9p: ->evict_inode() should kick out ->i_data, not ->i_mapping	2015-12-08 14:51:16 -05:00
adfs	fs/adfs: remove unneeded cast	2015-06-30 19:44:57 -07:00
affs	fs/affs: make root lookup from blkdev logical size	2015-09-10 13:29:01 -07:00
afs
autofs4
befs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-07-04 19:36:06 -07:00
bfs
btrfs	Btrfs: fix direct IO requests not reporting IO error to user space	2016-02-25 12:01:15 -08:00
cachefiles	FS-Cache: Add missing initialization of ret in cachefiles_write_page()	2015-11-16 20:38:43 -05:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2015-11-13 09:24:40 -08:00
cifs	cifs: fix erroneous return value	2016-02-25 12:01:18 -08:00
coda	fs/coda: fix readlink buffer overflow	2015-09-10 13:29:01 -07:00
configfs	configfs: allow dynamic group creation	2015-11-20 16:17:32 -08:00
cramfs
debugfs	debugfs: fix refcount imbalance in start_creating	2015-11-11 02:04:44 -05:00
devpts	pty: make sure super_block is still valid in final /dev/tty close	2016-02-25 12:01:14 -08:00
dlm	net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA	2015-12-01 15:45:05 -05:00
ecryptfs	eCryptfs: fixed bug in cipher handling	2016-03-25 16:04:06 -07:00
efivarfs
efs	fs/efs: femove unneeded cast	2015-06-25 17:00:42 -07:00
exofs	osd fs: __r4w_get_page rely on PageUptodate for uptodate	2015-12-12 10:15:34 -08:00
exportfs
ext2	ext2, ext4: warn when mounting with dax enabled	2015-11-16 09:43:54 -08:00
ext4	Merge remote-tracking branch 'lsk-44/linux-linaro-lsk-v4.4' into 44rc2	2016-03-23 20:51:00 -07:00
f2fs	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
fat	fat: fix fake_offset handling on error path	2015-11-20 16:17:32 -08:00
freevxfs	freevxfs: Grammar s/an negative/a negative/	2015-08-07 13:59:24 +02:00
fscache	FS-Cache: Handle a write to the page immediately beyond the EOF marker	2015-11-11 02:11:02 -05:00
fuse	fuse: Add support for passthrough read/write	2016-03-22 11:15:47 -07:00
gfs2	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
hfs	hfs: fix B-tree corruption after insertion at position 0	2015-09-10 13:29:01 -07:00
hfsplus	xattr handlers: Pass handler to operations instead of flags	2015-11-13 20:34:32 -05:00
hostfs	fs: create and use seq_show_option for escaping	2015-09-04 16:54:41 -07:00
hpfs	fs/hpfs/namei.c: remove unnecessary new_valid_dev() check	2015-11-09 15:11:24 -08:00
hugetlbfs	fs/hugetlbfs/inode.c: fix bugs in hugetlb_vmtruncate_list()	2016-02-25 12:01:22 -08:00
isofs
jbd2	Ext4 bug fixes for v4.4, including fixes for post-2038 time encodings,	2015-12-07 10:25:00 -08:00
jffs2	xattr handlers: Pass handler to operations instead of flags	2015-11-13 20:34:32 -05:00
jfs	fs/jfs: remove unnecessary new_valid_dev() checks	2015-11-09 15:11:24 -08:00
kernfs	kernfs: implement kernfs_path_len()	2015-08-18 15:49:15 -07:00
lockd	Mainly smaller bugfixes and cleanup. We're still finding some bugs from	2015-11-11 20:11:28 -08:00
logfs	mm, fs: introduce mapping_gfp_constraint()	2015-11-06 17:50:42 -08:00
minix	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-07-04 19:36:06 -07:00
ncpfs	ncpfs: don't allow negative timeouts	2015-11-20 16:17:32 -08:00
nfs	pNFS/flexfiles: Fix an XDR encoding bug in layoutreturn	2016-02-25 12:01:18 -08:00
nfs_common	lockd: NLM grace period shouldn't block NFSv4 opens	2015-08-13 10:22:06 -04:00
nfsd	nfsd: don't hold ls_mutex across a layout recall	2015-12-16 11:49:58 -05:00
nilfs2	Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-11 09:45:24 -08:00
nls
notify	inotify: actually check for invalid bits in sys_inotify_add_watch()	2015-11-05 19:34:48 -08:00
ntfs	mm, fs: introduce mapping_gfp_constraint()	2015-11-06 17:50:42 -08:00
ocfs2	ocfs2/dlm: clear refmap bit of recovery lock while doing local recovery cleanup	2016-02-17 12:30:56 -08:00
omfs
openpromfs
overlayfs	ovl: setattr: check permissions before copy-up	2016-02-25 12:01:24 -08:00
proc	sched: colocate related threads	2016-03-23 21:25:12 -07:00
pstore	FROMLIST: pstore-ram: add Device Tree bindings	2016-02-16 13:54:11 -08:00
qnx4	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
qnx6
quota	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-09-05 20:34:28 -07:00
ramfs	mm, fs: obey gfp_mapping for add_to_page_cache()	2015-10-16 11:42:28 -07:00
reiserfs	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
romfs
squashfs	squashfs: xattr simplifications	2015-11-13 20:34:33 -05:00
sysfs	platform/chrome: Branch for v4.4	2015-11-13 21:53:18 -08:00
sysv	fix sysvfs symlinks	2015-11-23 21:11:08 -05:00
tracefs	tracefs: Fix refcount imbalance in start_creating()	2015-11-04 22:13:45 -05:00
ubifs	ubifs: Use XATTR_*_PREFIX_LEN	2016-03-23 21:20:20 -07:00
udf	udf: Check output buffer length when converting name to CS0	2016-02-25 12:01:18 -08:00
ufs	fix ufs write vs readpage race when writing into a hole	2015-09-09 10:43:12 -07:00
xfs	xfs: log mount failures don't wait for buffers to be released	2016-02-25 12:01:24 -08:00
aio.c	net: initialize variables to avoid UML compilation failure	2016-03-23 21:24:21 -07:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf.c	Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-11 09:45:24 -08:00
binfmt_elf_fdpic.c	libnvdimm for 4.4:	2015-11-10 12:07:22 -08:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
block_dev.c	block: detach bdev inode from its wb in __blkdev_put()	2015-12-04 11:02:17 -07:00
buffer.c	fs/buffer.c: Revoke LRU when trying to drop buffers	2016-06-01 15:20:51 -07:00
char_dev.c	fs/char_dev.c: fix incorrect documentation for unregister_chrdev_region	2015-08-05 13:49:35 -07:00
compat.c
compat_binfmt_elf.c
compat_ioctl.c	tty: serial: msm_hs: Add snapshot of msm_hs uart drivers	2016-03-22 11:10:33 -07:00
coredump.c	coredump: change zap_threads() and zap_process() to use for_each_thread()	2015-11-06 17:50:42 -08:00
dax.c	dax: disable pmd mappings	2015-11-16 23:54:45 -08:00
dcache.c	dcache: Reduce the scope of i_lock in d_splice_alias	2015-08-21 02:34:37 -04:00
dcookies.c
direct-io.c	platform: msm: add Per-File-Tagger (PFT) driver	2016-03-23 21:24:03 -07:00
drop_caches.c	mm + fs: extends support for cache dropping	2016-03-23 21:24:12 -07:00
eventfd.c
eventpoll.c	epoll: use freezable blocking call	2016-02-16 13:54:21 -08:00
exec.c	vfs: Commit to never having exectuables on proc and sysfs.	2015-07-10 10:39:25 -05:00
fcntl.c
fhandle.c
file.c	vfs: clear remainder of 'full_fds_bits' in dup_fd()	2015-11-05 23:05:32 -08:00
file_table.c	fs, file table: reinit files_stat.max_files after deferred memory initialisation	2015-08-07 04:39:40 +03:00
filesystems.c
fs-writeback.c	fs: block_dump: Don't display inode changes if block_dump < 2	2016-02-16 13:51:11 -08:00
fs_pin.c
fs_struct.c
inode.c	fs: fix inode.c kernel-doc warning	2015-11-11 02:18:27 -05:00
internal.h	inode: rename i_wb_list to i_io_list	2015-08-17 23:38:10 -04:00
ioctl.c
Kconfig	dax: disable pmd mappings	2015-11-16 23:54:45 -08:00
Kconfig.binfmt
libfs.c	fs: Set the size of empty dirs to 0.	2015-08-12 15:28:45 -05:00
locks.c	locks: cleanup posix_lock_inode_wait and flock_lock_inode_wait	2015-10-22 14:57:42 -04:00
Makefile	ext4: promote ext4 over ext2 in the default probe order	2015-10-15 10:33:21 -04:00
mbcache.c
mount.h	fs: use seq_open_private() for proc_mounts	2015-06-30 19:44:56 -07:00
mpage.c	mm, fs: introduce mapping_gfp_constraint()	2015-11-06 17:50:42 -08:00
namei.c	platform: msm: add Per-File-Tagger (PFT) driver	2016-03-23 21:24:03 -07:00
namespace.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2015-09-01 16:13:25 -07:00
no-block.c
nsfs.c	fs/seq_file: convert int seq_vprint/seq_printf/etc... returns to void	2015-09-11 15:21:34 -07:00
open.c	vfs: Commit to never having exectuables on proc and sysfs.	2015-07-10 10:39:25 -05:00
pipe.c	fs/pipe.c: return error code rather than 0 in pipe_write()	2015-11-11 02:18:26 -05:00
pnode.c
pnode.h	mnt: Clarify and correct the disconnect logic in umount_tree	2015-07-22 20:33:27 -05:00
posix_acl.c	xattr handlers: Pass handler to operations instead of flags	2015-11-13 20:34:32 -05:00
proc_namespace.c	fs: use seq_open_private() for proc_mounts	2015-06-30 19:44:56 -07:00
read_write.c
readdir.c
select.c
seq_file.c	fs, seqfile: always allow oom killer	2015-11-06 17:50:42 -08:00
signalfd.c	signalfd: fix information leak in signalfd_copyinfo	2015-08-07 04:39:40 +03:00
splice.c	vfs: Avoid softlockups with sendfile(2)	2015-11-23 21:15:30 -05:00
stack.c
stat.c	fs/stat.c: remove unnecessary new_valid_dev() check	2015-11-09 15:11:24 -08:00
statfs.c
super.c	Fix for in kernel emergency remount when loop mounts are used	2016-02-16 13:54:20 -08:00
sync.c	fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE writeback	2015-11-06 17:50:42 -08:00
timerfd.c	Merge remote-tracking branch 'lsk-44/linux-linaro-lsk-v4.4' into 44rc2	2016-03-23 20:51:00 -07:00
userfaultfd.c	userfaultfd: Add missing vma_merge parameter	2016-02-16 13:54:16 -08:00
utimes.c
xattr.c	9p: xattr simplifications	2015-11-13 20:34:33 -05:00