android_kernel_oneplus_msm8998/fs
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
affs fs/affs: make root lookup from blkdev logical size 2015-09-10 13:29:01 -07:00
afs
autofs4
befs
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
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
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
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
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
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
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
posix_acl.c xattr handlers: Pass handler to operations instead of flags 2015-11-13 20:34:32 -05:00
proc_namespace.c
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