David Rientjes 1403830294 fs, proc: unconditional cond_resched when reading smaps ... If there are large numbers of hugepages to iterate while reading /proc/pid/smaps, the page walk never does cond_resched(). On archs without split pmd locks, there can be significant and observable contention on mm->page_table_lock which cause lengthy delays without rescheduling. Always reschedule in smaps_pte_range() if necessary since the pagewalk iteration can be expensive. Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1708211405520.131071@chino.kir.corp.google.com Signed-off-by: David Rientjes <rientjes@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2017-09-08 18:26:47 -07:00
..
9p	Merge branch 'akpm' (patches from Andrew)	2017-09-06 20:49:49 -07:00
adfs	…
affs	fs: convert a pile of fsync routines to errseq_t based reporting	2017-08-01 08:39:29 -04:00
afs	Merge branch 'akpm' (patches from Andrew)	2017-09-06 20:49:49 -07:00
autofs4	Fix up over-eager 'wait_queue_t' renaming	2017-07-10 11:40:19 -07:00
befs	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-15 12:00:42 -07:00
bfs	bfs: fix sanity checks for empty files	2017-07-12 16:26:00 -07:00
btrfs	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
cachefiles	sched/wait: Disambiguate wq_entry->task_list and wq_head->task_list naming	2017-06-20 12:19:14 +02:00
ceph	Merge branch 'akpm' (patches from Andrew)	2017-09-06 20:49:49 -07:00
cifs	enable xattr support for smb3 and also a bugfix	2017-09-07 16:06:14 -07:00
coda	fs: implement vfs_iter_write using do_iter_write	2017-06-29 17:49:23 -04:00
configfs	configfs: Introduce config_item_get_unless_zero()	2017-06-12 13:20:20 +02:00
cramfs	…
crypto	block: replace bi_bdev with a gendisk pointer and partitions index	2017-08-23 12:49:55 -06:00
debugfs	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-15 12:00:42 -07:00
devpts	pty: Repair TIOCGPTPEER	2017-08-24 13:23:03 -07:00
dlm	File locking related changes for v4.14	2017-09-06 13:43:26 -07:00
ecryptfs	ecryptfs: convert to file_write_and_wait in ->fsync	2017-08-03 14:20:22 -04:00
efivarfs	VFS: Kill off s_options and helpers	2017-07-11 06:09:21 -04:00
efs	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
exofs	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
exportfs	Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-03-03 11:38:56 -08:00
ext2	dax: use common 4k zero page for dax mmap reads	2017-09-06 17:27:24 -07:00
ext4	Merge branch 'quota_scaling' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2017-09-07 15:19:35 -07:00
f2fs	mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY	2017-09-08 18:26:46 -07:00
fat	fat: fix using uninitialized fields of fat_inode/fsinfo_inode	2017-03-09 17:01:10 -08:00
freevxfs	…
fscache	mm: remove nr_pages argument from pagevec_lookup{,_range}()	2017-09-06 17:27:27 -07:00
fuse	Writeback error handling fixes for v4.14	2017-09-06 14:11:03 -07:00
gfs2	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
hfs	fs: convert a pile of fsync routines to errseq_t based reporting	2017-08-01 08:39:29 -04:00
hfsplus	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
hostfs	fs: convert a pile of fsync routines to errseq_t based reporting	2017-08-01 08:39:29 -04:00
hpfs	fs: convert a pile of fsync routines to errseq_t based reporting	2017-08-01 08:39:29 -04:00
hugetlbfs	mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY	2017-09-08 18:26:46 -07:00
isofs	isofs: Delete an unnecessary variable initialisation in isofs_read_inode()	2017-08-23 18:54:03 +02:00
jbd2	Writeback error handling fixes (pile #2)	2017-07-07 19:38:17 -07:00
jffs2	fs: convert a pile of fsync routines to errseq_t based reporting	2017-08-01 08:39:29 -04:00
jfs	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
kernfs	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
lockd	sunrpc: mark all struct svc_version instances as const	2017-07-13 15:58:03 -04:00
minix	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-08 10:50:54 -07:00
ncpfs	fs: convert a pile of fsync routines to errseq_t based reporting	2017-08-01 08:39:29 -04:00
nfs	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
nfs_common	…
nfsd	annotate RWF_... flags	2017-08-31 17:32:38 -04:00
nilfs2	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
nls	…
notify	fsnotify: make dnotify_fsnotify_ops const	2017-08-30 16:02:48 +02:00
ntfs	fs: convert a pile of fsync routines to errseq_t based reporting	2017-08-01 08:39:29 -04:00
ocfs2	Merge branch 'quota_scaling' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2017-09-07 15:19:35 -07:00
omfs	omfs: Implement show_options	2017-07-06 03:31:46 -04:00
openpromfs	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
orangefs	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-15 12:00:42 -07:00
overlayfs	overlayfs, locking: Remove smp_mb__before_spinlock() usage	2017-08-10 12:29:02 +02:00
proc	fs, proc: unconditional cond_resched when reading smaps	2017-09-08 18:26:47 -07:00
pstore	Revert "pstore: Honor dmesg_restrict sysctl on dmesg dumps"	2017-08-17 16:29:19 -07:00
qnx4	…
qnx6	…
quota	Merge branch 'quota_scaling' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2017-09-07 15:19:35 -07:00
ramfs	mm: make pagevec_lookup() update index	2017-09-06 17:27:26 -07:00
reiserfs	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2017-09-07 14:53:17 -07:00
romfs	romfs: use different way to generate fsid for BLOCK or MTD	2017-01-24 16:26:14 -08:00
squashfs	fs/pstore: fs/squashfs: change usage of LZ4 to work with new LZ4 version	2017-02-24 17:46:57 -08:00
sysfs	sysfs: be careful of error returns from ops->show()	2017-04-08 17:33:32 +02:00
sysv	mm: drop "wait" parameter from write_one_page()	2017-07-05 18:44:22 -04:00
tracefs	VFS: Don't use save/replace_mount_options if not using generic_show_options	2017-07-06 03:31:46 -04:00
ubifs	mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY	2017-09-08 18:26:46 -07:00
udf	fs-udf: Delete an error message for a failed memory allocation in two functions	2017-08-16 16:43:23 +02:00
ufs	Writeback error handling fixes (pile #1)	2017-07-07 18:39:15 -07:00
xfs	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
Kconfig	fs/Kconfig: kill CONFIG_PERCPU_RWSEM some more	2017-07-12 16:26:00 -07:00
Kconfig.binfmt	…
Makefile	…
aio.c	mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY	2017-09-08 18:26:46 -07:00
anon_inodes.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
attr.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>	2017-03-02 08:42:29 +01:00
bad_inode.c	statx: Add a system call to make enhanced file info available	2017-03-02 20:51:15 -05:00
binfmt_aout.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
binfmt_elf.c	This series has the ultimate goal of providing a sane stack rlimit when	2017-09-07 20:35:29 -07:00
binfmt_elf_fdpic.c	binfmt: Introduce secureexec flag	2017-08-01 12:03:05 -07:00
binfmt_em86.c	…
binfmt_flat.c	exec: Rename bprm->cred_prepared to called_set_creds	2017-08-01 12:02:48 -07:00
binfmt_misc.c	fs: constify tree_descr arrays passed to simple_fill_super()	2017-04-26 23:54:06 -04:00
binfmt_script.c	…
block_dev.c	block: replace bi_bdev with a gendisk pointer and partitions index	2017-08-23 12:49:55 -06:00
buffer.c	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
char_dev.c	char_dev: order /proc/devices by major number	2017-07-17 15:28:50 +02:00
compat.c	fs/compat.c: trim unused includes	2017-04-17 12:52:27 -04:00
compat_binfmt_elf.c	fs/binfmt: Convert obsolete cputime type to nsecs	2017-02-01 09:13:51 +01:00
compat_ioctl.c	media: get rid of removed DMX_GET_CAPS and DMX_SET_SOURCE leftovers	2017-09-05 08:25:07 -04:00
coredump.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
dax.c	dax: initialize variable pfn before using it	2017-09-06 17:27:24 -07:00
dcache.c	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-15 12:00:42 -07:00
dcookies.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
direct-io.c	block: replace bi_bdev with a gendisk pointer and partitions index	2017-08-23 12:49:55 -06:00
drop_caches.c	…
eventfd.c	There has been a fair amount of activity in the docs tree this time	2017-07-03 21:13:25 -07:00
eventpoll.c	epoll: fix race between ep_poll_callback(POLLFREE) and ep_free()/ep_remove()	2017-09-01 13:07:35 -07:00
exec.c	exec: Consolidate pdeath_signal clearing	2017-08-01 12:03:14 -07:00
fcntl.c	vfs: fix flock compat thinko	2017-07-07 13:48:18 -07:00
fhandle.c	fhandle: move compat syscalls from compat.c	2017-04-17 12:52:26 -04:00
file.c	fs/file.c: replace alloc_fdmem() with kvmalloc() alternative	2017-07-06 16:24:30 -07:00
file_table.c	fs: new infrastructure for writeback error handling and reporting	2017-07-06 07:02:25 -04:00
filesystems.c	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-15 12:00:42 -07:00
fs-writeback.c	writeback: rework wb_[dec|inc]_stat family of functions	2017-07-12 16:26:05 -07:00
fs_pin.c	sched/wait: Disambiguate wq_entry->task_list and wq_head->task_list naming	2017-06-20 12:19:14 +02:00
fs_struct.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h>	2017-03-02 08:42:35 +01:00
inode.c	xfs: evict all inodes involved with log redo item	2017-09-01 10:55:30 -07:00
internal.h	xfs: evict all inodes involved with log redo item	2017-09-01 10:55:30 -07:00
ioctl.c	sched/headers: Prepare for the reduction of <linux/sched.h>'s signal API dependency	2017-03-02 08:42:37 +01:00
iomap.c	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
libfs.c	fs: convert __generic_file_fsync to use errseq_t based reporting	2017-07-06 07:02:29 -04:00
locks.c	locks: restore a warn for leaked locks on close	2017-07-21 13:57:31 -04:00
mbcache.c	ext4: xattr inode deduplication	2017-06-22 11:44:55 -04:00
mount.h	Now that IPC and other changes have landed, enable manual markings for	2017-07-19 08:55:18 -07:00
mpage.c	block: replace bi_bdev with a gendisk pointer and partitions index	2017-08-23 12:49:55 -06:00
namei.c	Now that IPC and other changes have landed, enable manual markings for	2017-07-19 08:55:18 -07:00
namespace.c	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-15 12:00:42 -07:00
no-block.c	…
nsfs.c	VFS: Provide empty name qstr	2017-07-06 03:27:09 -04:00
open.c	Writeback error handling fixes (pile #2)	2017-07-07 19:38:17 -07:00
pipe.c	VFS: Provide empty name qstr	2017-07-06 03:27:09 -04:00
pnode.c	mnt: Make propagate_umount less slow for overlapping mount propagation trees	2017-05-23 08:41:17 -05:00
pnode.h	mnt: Tuck mounts under others instead of creating shadow/side mounts.	2017-02-04 00:01:06 +13:00
posix_acl.c	sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>	2017-03-02 08:42:31 +01:00
proc_namespace.c	sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>	2017-03-02 08:42:38 +01:00
read_write.c	annotate RWF_... flags	2017-08-31 17:32:38 -04:00
readdir.c	readdir: move compat syscalls from compat.c	2017-04-17 12:52:24 -04:00
select.c	fs/select: Fix memory corruption in compat_get_fd_set()	2017-08-28 16:09:19 -07:00
seq_file.c	mm: introduce kv[mz]alloc helpers	2017-05-08 17:15:12 -07:00
signalfd.c	sched/wait: Rename wait_queue_t => wait_queue_entry_t	2017-06-20 12:18:27 +02:00
splice.c	fs: implement vfs_iter_write using do_iter_write	2017-06-29 17:49:23 -04:00
stack.c	…
stat.c	fs: Provide __inode_get_bytes()	2017-08-17 22:06:03 +02:00
statfs.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-08 10:50:54 -07:00
super.c	quota: Convert dqio_mutex to rwsem	2017-08-17 18:52:48 +02:00
sync.c	Merge branch 'akpm' (patches from Andrew)	2017-09-06 20:49:49 -07:00
timerfd.c	timerfd: Use get_itimerspec64() and put_itimerspec64()	2017-06-30 04:14:38 -04:00
userfaultfd.c	userfaultfd: non-cooperative: closing the uffd without triggering SIGBUS	2017-09-08 18:26:47 -07:00
utimes.c	utimes: move compat syscalls from compat.c	2017-04-17 12:52:23 -04:00
xattr.c	treewide: use kv[mz]alloc* rather than opencoded variants	2017-05-08 17:15:13 -07:00