Mel Gorman 0c08500607 mm: vmscan: take page buffers dirty and locked state into account ... Page reclaim keeps track of dirty and under writeback pages and uses it to determine if wait_iff_congested() should stall or if kswapd should begin writing back pages. This fails to account for buffer pages that can be under writeback but not PageWriteback which is the case for filesystems like ext3 ordered mode. Furthermore, PageDirty buffer pages can have all the buffers clean and writepage does no IO so it should not be accounted as congested. This patch adds an address_space operation that filesystems may optionally use to check if a page is really dirty or really under writeback. An implementation is provided for for buffer_heads is added and used for block operations and ext3 in ordered mode. By default the page flags are obeyed. Credit goes to Jan Kara for identifying that the page flags alone are not sufficient for ext3 and sanity checking a number of ideas on how the problem could be addressed. Signed-off-by: Mel Gorman <mgorman@suse.de> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Rik van Riel <riel@redhat.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Cc: Zlatko Calusic <zcalusic@bitsync.net> Cc: dormando <dormando@rydia.net> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Git-commit: b45972265f823ed01eae0867a176320071665787 Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git Change-Id: Idabea6f388eddcf5acf4725975d51119169da211 [vinmenon@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>		2014-12-11 15:12:10 +05:30
..
9p	aio: don't include aio.h in sched.h	2013-05-07 20:16:25 -07:00
adfs
affs
afs	aio: don't include aio.h in sched.h	2013-05-07 20:16:25 -07:00
autofs4	autofs - remove autofs dentry mount check	2013-05-06 13:06:59 -07:00
befs	befs_readdir(): do not increment ->f_pos if filldir tells us to stop	2013-05-31 15:17:56 -04:00
bfs
btrfs	Merge upstream tag 'v3.10.49' into msm-3.10	2014-08-20 13:23:09 -07:00
cachefiles
ceph	ceph: allow sync_read/write return partial successed size of read/write.	2014-01-09 12:24:25 -08:00
cifs	Merge upstream tag 'v3.10.49' into msm-3.10	2014-08-20 13:23:09 -07:00
coda
configfs	configfs: fix race between dentry put and lookup	2013-11-29 11:11:53 -08:00
cramfs
debugfs	Merge upstream linux-stable v3.10.28 into msm-3.10	2014-03-24 14:28:34 -07:00
devpts	devpts: plug the memory leak in kill_sb	2013-12-04 10:55:49 -08:00
dlm
ecryptfs	ecryptfs: Fix memory leakage in keystore.c	2013-11-13 12:05:31 +09:00
efivarfs	efivarfs: Never return ENOENT from firmware again	2013-05-13 20:12:10 +01:00
efs
exofs	ore: Fix wrong math in allocation of per device BIO	2014-02-13 13:48:00 -08:00
exportfs
ext2	aio: don't include aio.h in sched.h	2013-05-07 20:16:25 -07:00
ext3	mm: vmscan: take page buffers dirty and locked state into account	2014-12-11 15:12:10 +05:30
ext4	Merge upstream tag 'v3.10.49' into msm-3.10	2014-08-20 13:23:09 -07:00
f2fs	f2fs updates for v3.10	2013-05-08 15:11:48 -07:00
fat	Add compat_ioctl support for VFAT_IOCTL_GET_VOLUME_ID	2014-06-13 12:05:26 -07:00
freevxfs
fscache
fuse	mm/page-writeback.c: add strictlimit feature	2014-11-25 20:59:45 -08:00
gfs2	arch: Mass conversion of smp_mb__*()	2014-08-15 11:45:28 -07:00
hfs	hfs: avoid crash in hfs_bnode_create	2013-05-24 16:22:51 -07:00
hfsplus	aio: don't include aio.h in sched.h	2013-05-07 20:16:25 -07:00
hostfs	hostfs: use kmalloc instead of kzalloc	2013-05-04 15:48:45 -04:00
hpfs	hpfs: better test for errors	2013-07-13 11:42:26 -07:00
hppfs
hugetlbfs	cope with potentially long ->d_dname() output for shmem/hugetlb	2014-01-09 16:35:41 -08:00
isofs	isofs: Refuse RW mount of the filesystem instead of making it RO	2013-09-26 17:18:28 -07:00
jbd	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2013-05-03 09:56:25 -07:00
jbd2	Merge upstream tag 'v3.10.49' into msm-3.10	2014-08-20 13:23:09 -07:00
jffs2	jffs2: remove from wait queue after schedule()	2014-04-26 17:15:36 -07:00
jfs	jfs: fix error path in ialloc	2013-11-13 12:05:31 +09:00
lockd	lockd: ensure we tear down any live sockets when socket creation fails during lockd_up	2014-05-13 13:59:46 +02:00
logfs
minix
ncpfs	ncpfs: fix rmdir returns Device or resource busy	2013-06-07 12:15:38 -04:00
nfs	Merge upstream tag 'v3.10.49' into msm-3.10	2014-08-20 13:23:09 -07:00
nfs_common
nfsd	nfsd: fix rare symlink decoding bug	2014-07-09 11:14:02 -07:00
nilfs2	nilfs2: fix segctor bug that causes file system corruption	2014-01-25 08:27:12 -08:00
nls
notify	compat: fix sys_fanotify_mark	2014-02-13 13:48:00 -08:00
ntfs	aio: don't include aio.h in sched.h	2013-05-07 20:16:25 -07:00
ocfs2	ocfs2: do not put bh when buffer_uptodate failed	2014-05-06 07:55:32 -07:00
omfs
openpromfs
proc	sched: Add API to set task's initial task load	2014-11-05 14:26:59 +05:30
pstore	pstore/ram: Add ramoops_console_write_buf api	2014-06-23 14:59:06 -07:00
qnx4
qnx6	qnx6: qnx6_readdir() has a braino in pos calculation	2013-05-31 15:17:31 -04:00
quota	quota: Fix race between dqput() and dquot_scan_active()	2014-03-06 21:30:12 -08:00
ramfs
reiserfs	reiserfs: call truncate_setsize under tailpack mutex	2014-07-06 18:54:15 -07:00
romfs
squashfs
sysfs
sysv	sysv: Add forgotten superblock lock init for v7 fs	2013-10-05 07:13:09 -07:00
ubifs	Merge upstream tag 'v3.10.49' into msm-3.10	2014-08-20 13:23:09 -07:00
udf	udf: Refuse RW mount of the filesystem instead of making it RO	2013-10-01 09:17:48 -07:00
ufs
xfs	xfs: fix directory hash ordering bug	2014-05-06 07:55:28 -07:00
yaffs2	fs: yaffs2: initialize delayed workqueue before using it	2013-11-26 23:29:26 -08:00
aio.c	aio: fix kernel memory disclosure in io_getevents() introduced in v3.10	2014-06-30 20:09:45 -07:00
anon_inodes.c
attr.c	fs,userns: Change inode_capable to capable_wrt_inode_uidgid	2014-06-16 13:42:52 -07:00
bad_inode.c
binfmt_aout.c	mm: remove free_area_cache	2014-02-07 13:49:41 -08:00
binfmt_elf.c	Merge upstream linux-stable v3.10.28 into msm-3.10	2014-03-24 14:28:34 -07:00
binfmt_elf_fdpic.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2013-05-02 10:16:16 -07:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
binfmt_som.c
bio-integrity.c	bio-integrity: Fix bio_integrity_verify segment start bug	2014-03-23 21:38:21 -07:00
bio.c	platform: msm: fix PFT when using direct-io	2014-06-23 21:38:40 +03:00
block_dev.c	mm: vmscan: take page buffers dirty and locked state into account	2014-12-11 15:12:10 +05:30
buffer.c	mm: vmscan: take page buffers dirty and locked state into account	2014-12-11 15:12:10 +05:30
char_dev.c
compat.c	compat: let architectures define __ARCH_WANT_COMPAT_SYS_GETDENTS64	2014-08-15 11:41:28 -07:00
compat_binfmt_elf.c
compat_ioctl.c	fs: Add TTY PM IOCTLs to compat table	2014-07-30 10:25:00 -06:00
coredump.c	do_coredump(): don't wait for thaw if coredump has already been interrupted	2013-05-04 14:45:54 -04:00
coredump.h
dcache.c	vfs: In d_path don't call d_dname on a mount point	2014-01-25 08:27:11 -08:00
dcookies.c	fs/compat: fix lookup_dcookie() parameter handling	2014-02-13 13:48:00 -08:00
direct-io.c	platform: msm: fix PFT when using direct-io	2014-06-23 21:38:40 +03:00
drop_caches.c
eventfd.c
eventpoll.c	Revert "epoll: use freezable blocking call"	2014-08-29 14:20:41 -07:00
exec.c	metag: Reduce maximum stack size to 256MB	2014-06-07 13:25:38 -07:00
fcntl.c
fhandle.c
file.c	Merge upstream linux-stable v3.10.36 into msm-3.10	2014-04-23 16:23:49 -07:00
file_table.c	don't bother with {get,put}_write_access() on non-regular files	2014-05-30 21:52:12 -07:00
filesystems.c
fs-writeback.c	Merge upstream tag 'v3.10.40' into msm-3.10	2014-06-18 13:10:54 -07:00
fs_struct.c
generic_acl.c
inode.c	fs,userns: Change inode_capable to capable_wrt_inode_uidgid	2014-06-16 13:42:52 -07:00
internal.h	splice: don't pass the address of ->f_pos to methods	2013-06-20 19:02:45 +04:00
ioctl.c
ioprio.c
Kconfig	fs: yaffs: Import yaffs from Thu Dec 23 13:31:37 2010 +1300	2013-09-04 17:24:15 -07:00
Kconfig.binfmt
libfs.c
locks.c	locks: allow __break_lease to sleep even when break_time is 0	2014-05-13 13:59:44 +02:00
Makefile	fs: yaffs: Import yaffs from Thu Dec 23 13:31:37 2010 +1300	2013-09-04 17:24:15 -07:00
mbcache.c
mount.h	vfs: Is mounted should be testing mnt_ns for NULL or error.	2014-02-06 11:08:16 -08:00
mpage.c
namei.c	Merge upstream tag 'v3.10.49' into msm-3.10	2014-08-20 13:23:09 -07:00
namespace.c	VFS: collect_mounts() should return an ERR_PTR	2013-08-29 09:47:35 -07:00
no-block.c
open.c	Merge upstream tag 'v3.10.49' into msm-3.10	2014-08-20 13:23:09 -07:00
pipe.c	vfs: fix subtle use-after-free of pipe_inode_info	2013-12-11 22:36:26 -08:00
pnode.c	vfs: Fix invalid ida_remove() call	2013-05-31 15:16:33 -04:00
pnode.h
posix_acl.c	posix_acl: handle NULL ACL in posix_acl_equiv_mode	2014-06-07 13:25:33 -07:00
proc_namespace.c
read_write.c	Merge upstream linux-stable v3.10.36 into msm-3.10	2014-04-23 16:23:49 -07:00
readdir.c
select.c	select: use freezable blocking call	2013-07-01 15:45:28 -07:00
seq_file.c	fs/seq_file: Use vmalloc by default for allocations > PAGE_SIZE	2014-09-23 10:37:58 -06:00
signalfd.c
splice.c	fuse: fix pipe_buf_operations	2014-02-13 13:47:59 -08:00
stack.c
stat.c
statfs.c	vfs: allow O_PATH file descriptors for fstatfs()	2013-10-18 07:45:44 -07:00
super.c	Merge "fs/super.c: sync ro remount after blocking writers"	2014-04-16 04:43:09 -07:00
sync.c
timerfd.c	timerfd: support CLOCK_BOOTTIME clock	2014-06-13 12:06:03 -07:00
utimes.c
xattr.c
xattr_acl.c