Yan, Zheng b0d7c22310 ceph: introduce i_truncate_mutex ... I encountered below deadlock when running fsstress wmtruncate work truncate MDS --------------- ------------------ -------------------------- lock i_mutex <- truncate file lock i_mutex (blocked) <- revoking Fcb (filelock to MIX) send request -> handle request (xlock filelock) At the initial time, there are some dirty pages in the page cache. When the kclient receives the truncate message, it reduces inode size and creates some 'out of i_size' dirty pages. wmtruncate work can't truncate these dirty pages because it's blocked by the i_mutex. Later when the kclient receives the cap message that revokes Fcb caps, It can't flush all dirty pages because writepages() only flushes dirty pages within the inode size. When the MDS handles the 'truncate' request from kclient, it waits for the filelock to become stable. But the filelock is stuck in unstable state because it can't finish revoking kclient's Fcb caps. The truncate pagecache locking has already caused lots of trouble for use. I think it's time simplify it by introducing a new mutex. We use the new mutex to prevent concurrent truncate_inode_pages(). There is no need to worry about race between buffered write and truncate_inode_pages(), because our "get caps" mechanism prevents them from concurrent execution. Reviewed-by: Sage Weil <sage@inktank.com> Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>		2013-08-15 11:12:06 -07:00
..
9p	Second round of 9p patches for the 3.11 merge window.	2013-07-11 10:21:23 -07:00
adfs	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
affs	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
afs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-03 09:10:19 -07:00
autofs4	helper for reading ->d_count	2013-07-05 18:59:33 +04:00
befs	[readdir] convert befs	2013-06-29 12:56:55 +04:00
bfs	[readdir] convert bfs	2013-06-29 12:56:33 +04:00
btrfs	btrfs: don't loop on large offsets in readdir	2013-08-09 19:34:56 -04:00
cachefiles	mm: remove lru parameter from __pagevec_lru_add and remove parts of pagevec API	2013-07-03 16:07:31 -07:00
ceph	ceph: introduce i_truncate_mutex	2013-08-15 11:12:06 -07:00
cifs	cifs: don't instantiate new dentries in readdir for inodes that need to be revalidated immediately	2013-08-07 10:57:06 -05:00
coda	helper for reading ->d_count	2013-07-05 18:59:33 +04:00
configfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-14 11:42:26 -07:00
cramfs	[readdir] convert f2fs	2013-06-29 12:56:46 +04:00
debugfs	debugfs: debugfs_remove_recursive() must not rely on list_empty(d_subdirs)	2013-07-31 12:16:31 -04:00
devpts
dlm	dlm: kill the unnecessary and wrong device_close()->recalc_sigpending()	2013-08-09 10:48:20 -07:00
ecryptfs	Code cleanups and improved buffer handling during page crypto operations	2013-07-11 10:20:18 -07:00
efivarfs	efivarfs: we can use simple_lookup() now	2013-07-14 17:48:35 +04:00
efs	[readdir] convert efs	2013-06-29 12:56:31 +04:00
exofs	Lots of bug fixes, cleanups and optimizations. In the bug fixes	2013-07-02 09:39:34 -07:00
exportfs	[readdir] constify ->actor	2013-06-29 12:57:05 +04:00
ext2	[O_TMPFILE] it's still short a few helpers, but infrastructure should be OK now...	2013-06-29 12:57:10 +04:00
ext3	ext3: fix a BUG when opening a file with O_TMPFILE flag	2013-07-20 22:03:20 -04:00
ext4	ext4: flush the extent status cache during EXT4_IOC_SWAP_BOOT	2013-08-12 09:29:30 -04:00
f2fs	f2fs: fix readdir incorrectness	2013-07-08 13:35:48 +04:00
fat	fatfs: add FAT_IOCTL_GET_VOLUME_ID	2013-07-09 10:33:25 -07:00
freevxfs	[readdir] convert freevxfs	2013-06-29 12:56:53 +04:00
fscache	FS-Cache: Don't use spin_is_locked() in assertions	2013-06-19 14:16:47 +01:00
fuse	fuse: readdirplus: cleanup	2013-07-17 14:53:54 +02:00
gfs2	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-03 09:10:19 -07:00
hfs	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
hfsplus	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
hostfs	[readdir] convert hostfs	2013-06-29 12:56:59 +04:00
hpfs	Merge branch 'hpfs' from Mikulas Patocka	2013-07-04 11:22:55 -07:00
hppfs	clean up scary strncpy(dst, src, strlen(src)) uses	2013-07-03 16:07:41 -07:00
hugetlbfs	hugetlb: fix lockdep splat caused by pmd sharing	2013-08-13 17:57:48 -07:00
isofs	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
jbd	jbd: change journal_invalidatepage() to accept length	2013-05-21 23:26:36 -04:00
jbd2	jbd2: invalidate handle if jbd2_journal_restart() fails	2013-07-01 08:12:41 -04:00
jffs2	[readdir] convert jffs2	2013-06-29 12:56:47 +04:00
jfs	A couple cleanups to JFS for 3.11	2013-07-11 10:19:34 -07:00
lockd	LOCKD: Don't call utsname()->nodename from nlmclnt_setlockargs	2013-08-05 15:03:46 -04:00
logfs	Lots of bug fixes, cleanups and optimizations. In the bug fixes	2013-07-02 09:39:34 -07:00
minix	minix: bug widening a binary "not" operation	2013-06-29 12:57:35 +04:00
ncpfs	ncpfs: fix error return code in ncp_parse_options()	2013-07-09 10:33:25 -07:00
nfs	NFSv4: Fix up nfs4_proc_lookup_mountpoint	2013-08-07 20:47:26 -04:00
nfs_common
nfsd	nfsd: Fix SP4_MACH_CRED negotiation in EXCHANGE_ID	2013-08-07 12:06:07 -04:00
nilfs2	helper for reading ->d_count	2013-07-05 18:59:33 +04:00
nls
notify	fsnotify: update comments concerning locking scheme	2013-07-09 10:33:20 -07:00
ntfs	Lots of bug fixes, cleanups and optimizations. In the bug fixes	2013-07-02 09:39:34 -07:00
ocfs2	ocfs2: fix null pointer dereference in ocfs2_dir_foreach_blk_id()	2013-08-13 17:57:49 -07:00
omfs	[readdir] convert omfs	2013-06-29 12:56:37 +04:00
openpromfs	[readdir] convert openpromfs	2013-06-29 12:56:32 +04:00
proc	fs/proc/task_mmu.c: fix buffer overflow in add_page_map()	2013-08-13 17:57:50 -07:00
pstore	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2013-07-04 10:29:23 -07:00
qnx4	[readdir] convert qnx4	2013-06-29 12:56:38 +04:00
qnx6	[readdir] convert qnx6	2013-06-29 12:56:39 +04:00
quota	quota: Convert use of typedef ctl_table to struct ctl_table	2013-07-04 19:22:55 +02:00
ramfs
reiserfs	reiserfs: fix deadlock in umount	2013-08-05 17:37:37 +04:00
romfs	[readdir] convert romfs	2013-06-29 12:56:29 +04:00
squashfs	[readdir] convert squashfs	2013-06-29 12:56:28 +04:00
sysfs	sysfs: prevent warning when only using binary attributes	2013-07-16 10:57:36 -07:00
sysv	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
ubifs	Only a single patch which fixes a message.	2013-07-05 12:08:47 -07:00
udf	udf: provide ->tmpfile()	2013-06-29 12:57:12 +04:00
ufs	[readdir] simple local unixlike: switch to ->iterate()	2013-06-29 12:46:47 +04:00
xfs	xfs: di_flushiter considered harmful	2013-07-25 10:41:42 -05:00
aio.c	aio: fix wrong comment in aio_complete()	2013-07-03 16:08:06 -07:00
anon_inodes.c
attr.c
bad_inode.c	[readdir] ->readdir() is gone	2013-06-29 12:57:04 +04:00
binfmt_aout.c	mm: remove free_area_cache	2013-07-10 18:11:34 -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_elf.c	mm: remove free_area_cache	2013-07-10 18:11:34 -07:00
binfmt_em86.c
binfmt_flat.c	new helper: read_code()	2013-04-29 15:40:23 -04:00
binfmt_misc.c	binfmt_misc: reuse string_unescape_inplace()	2013-04-30 17:04:03 -07:00
binfmt_script.c
binfmt_som.c
bio-integrity.c
bio.c	Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block	2013-05-08 10:13:35 -07:00
block_dev.c	Merge branch 'for-3.11/core' of git://git.kernel.dk/linux-block	2013-07-11 13:03:24 -07:00
buffer.c	mm: vmscan: take page buffers dirty and locked state into account	2013-07-03 16:07:29 -07:00
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c	compat.c: LOOP_CLR_FD is taken care of in loop.c itself...	2013-06-29 12:46:44 +04:00
compat.c	[readdir] constify ->actor	2013-06-29 12:57:05 +04:00
coredump.c	coredump: '% at the end' shouldn't bypass core_uses_pid logic	2013-07-03 16:08:02 -07:00
coredump.h
dcache.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-03 09:10:19 -07:00
dcookies.c
direct-io.c	Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block	2013-05-08 10:13:35 -07:00
drop_caches.c
eventfd.c
eventpoll.c	Merge branch 'akpm' (updates from Andrew Morton)	2013-07-03 17:12:13 -07:00
exec.c	fs/exec.c:de_thread: mt-exec should update ->real_start_time	2013-07-03 16:08:03 -07:00
fcntl.c	vfs: add missing check for __O_TMPFILE in fcntl_init()	2013-08-05 18:25:32 +04:00
fhandle.c
file_table.c	fput: turn "list_head delayed_fput_list" into llist_head	2013-07-13 13:29:10 +04:00
file.c	don't bother with deferred freeing of fdtables	2013-05-01 17:31:42 -04:00
filesystems.c
fs_struct.c
fs-writeback.c	mm/writeback: don't check force_wait to handle bdi->work_list	2013-07-09 10:33:22 -07:00
generic_acl.c
inode.c	allow the temp files created by open() to be linked to	2013-06-29 12:57:11 +04:00
internal.h	constify rw_verify_area()	2013-06-29 12:57:34 +04:00
ioctl.c
ioprio.c
Kconfig	efivarfs: Move to fs/efivarfs	2013-04-17 13:25:09 +01:00
Kconfig.binfmt	fs: make binfmt support for #! scripts modular and removable	2013-04-30 17:04:04 -07:00
libfs.c	make simple_lookup() usable for filesystems that set ->s_d_op	2013-07-14 17:43:25 +04:00
locks.c	locks: move file_lock_list to a set of percpu hlist_heads and convert file_lock_lock to an lglock	2013-07-08 13:36:42 +04:00
Makefile	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-05-01 17:51:54 -07:00
mbcache.c
mount.h	get rid of full-hash scan on detaching vfsmounts	2013-04-09 14:12:52 -04:00
mpage.c
namei.c	fs: Allow unprivileged linkat(..., AT_EMPTY_PATH) aka flink	2013-08-05 18:24:11 +04:00
namespace.c	create_mnt_ns: unidiomatic use of list_add()	2013-05-04 15:18:53 -04:00
no-block.c
open.c	fs: Fix file mode for O_TMPFILE	2013-08-05 18:24:10 +04:00
pipe.c	aio: don't include aio.h in sched.h	2013-05-07 20:16:25 -07:00
pnode.c	vfs: Fix invalid ida_remove() call	2013-05-31 15:16:33 -04:00
pnode.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-05-01 17:51:54 -07:00
posix_acl.c
proc_namespace.c
read_write.c	vfs: export lseek_execute() to modules	2013-07-03 16:23:27 +04:00
readdir.c	[readdir] constify ->actor	2013-06-29 12:57:05 +04:00
select.c	net: rename include/net/ll_poll.h to include/net/busy_poll.h	2013-07-10 17:08:27 -07:00
seq_file.c	seq_file: add seq_list_*_percpu helpers	2013-07-08 13:36:41 +04:00
signalfd.c
splice.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-03 09:10:19 -07:00
stack.c
stat.c
statfs.c
super.c	livelock avoidance in sget()	2013-07-20 04:58:58 +04:00
sync.c
timerfd.c	timerfd: Add alarm timers	2013-05-29 12:57:34 -07:00
utimes.c
xattr_acl.c
xattr.c