Chris Mason f82c458a2c btrfs: fix lockups from btrfs_clear_path_blocking ... The fair reader/writer locks mean that btrfs_clear_path_blocking needs to strictly follow lock ordering rules even when we already have blocking locks on a given path. Before we can clear a blocking lock on the path, we need to make sure all of the locks have been converted to blocking. This will remove lock inversions against anyone spinning in write_lock() against the buffers we're trying to get read locks on. These inversions didn't exist before the fair read/writer locks, but now we need to be more careful. We papered over this deadlock in the past by changing btrfs_try_read_lock() to be a true trylock against both the spinlock and the blocking lock. This was slower, and not sufficient to fix all the deadlocks. This patch adds a btrfs_tree_read_lock_atomic(), which basically means get the spinlock but trylock on the blocking lock. Signed-off-by: Chris Mason <clm@fb.com> Signed-off-by: Josef Bacik <jbacik@fb.com> Reported-by: Patrick Schmid <schmid@phys.ethz.ch> cc: stable@vger.kernel.org #v3.15+		2014-11-19 10:34:35 -08:00
..
9p	…
adfs	adfs: add __printf verification, fix format/argument mismatches	2014-08-08 15:57:24 -07:00
affs	…
afs	…
autofs4	autofs4: comment typo: remove a a doubled word	2014-08-08 15:57:19 -07:00
befs	fs/befs/linuxvfs.c: check superblock before dump operation	2014-08-08 15:57:20 -07:00
bfs	fs/bfs: use bfs prefix for dump_imap	2014-08-08 15:57:24 -07:00
btrfs	btrfs: fix lockups from btrfs_clear_path_blocking	2014-11-19 10:34:35 -08:00
cachefiles	…
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2014-08-13 17:43:29 -06:00
cifs	Clarify Kconfig help text for CIFS and SMB2/SMB3	2014-08-25 17:01:05 -05:00
coda	fs/coda: use linux/uaccess.h	2014-08-08 15:57:20 -07:00
configfs	…
cramfs	fs/cramfs/inode.c: use linux/uaccess.h	2014-08-08 15:57:25 -07:00
debugfs	…
devpts	…
dlm	fs/dlm/debug_fs.c: remove unnecessary null test before debugfs_remove	2014-08-08 15:57:27 -07:00
ecryptfs	…
efivarfs	…
efs	fs/efs/namei.c: return is not a function	2014-08-08 15:57:18 -07:00
exofs	fs/exofs/ore_raid.c: replace count*size kzalloc by kcalloc	2014-08-08 15:57:24 -07:00
exportfs	…
ext2	…
ext3	ext3: Count internal journal as bsddf overhead in ext3_statfs	2014-08-19 23:16:51 +02:00
ext4	ext4: avoid trying to kfree an ERR_PTR pointer	2014-09-03 09:37:30 -04:00
f2fs	f2fs: reposition unlock_new_inode to prevent accessing invalid inode	2014-09-02 00:22:24 -07:00
fat	…
freevxfs	…
fscache	…
fuse	switch iov_iter_get_pages() to passing maximal number of pages	2014-08-07 14:40:11 -04:00
gfs2	…
hfs	…
hfsplus	…
hostfs	hostfs: support rename flags	2014-08-07 14:40:09 -04:00
hpfs	fs/hpfs/dnode.c: fix suspect code indent	2014-08-08 15:57:22 -07:00
hppfs	…
hugetlbfs	…
isofs	isofs: Fix unbounded recursion when processing relocated directories	2014-08-19 18:29:30 +02:00
jbd	…
jbd2	jbd2: fix descriptor block size handling errors with journal_csum	2014-08-28 22:22:29 -04:00
jffs2	MTD updates for 3.17-rc1	2014-08-08 18:13:21 -07:00
jfs	…
kernfs	…
lockd	lockd: fix rpcbind crash on lockd startup failure	2014-09-08 12:03:32 -04:00
logfs	…
minix	minix zmap block counts calculation fix	2014-08-08 15:57:20 -07:00
ncpfs	…
nfs	pnfs: fix filelayout_retry_commit when idx > 0	2014-09-10 12:43:45 -07:00
nfs_common	…
nfsd	nfsd4: fix rd_dircount enforcement	2014-09-08 12:02:03 -04:00
nilfs2	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-08-11 11:44:11 -07:00
nls	…
notify	fs/notify: don't show f_handle if exportfs_encode_inode_fh failed	2014-09-10 15:42:12 -07:00
ntfs	…
ocfs2	ocfs2: quorum: add a log for node not fenced	2014-08-29 16:28:17 -07:00
omfs	fs/omfs/inode.c: replace count*size kzalloc by kcalloc	2014-08-08 15:57:25 -07:00
openpromfs	…
proc	Revert "proc: Point /proc/{mounts,net} at /proc/thread-self/{mounts,net} instead of /proc/self/{mounts,net}"	2014-08-10 21:24:59 -07:00
pstore	fs/pstore/ram_core.c: replace count*size kmalloc by kmalloc_array	2014-08-08 15:57:25 -07:00
qnx4	…
qnx6	fs/qnx6: update debugging to current functions	2014-08-08 15:57:26 -07:00
quota	…
ramfs	fs/ramfs/file-nommu.c: replace count*size kzalloc by kcalloc	2014-08-08 15:57:18 -07:00
reiserfs	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2014-08-13 17:45:40 -06:00
romfs	fs/romfs/super.c: add blank line after declarations	2014-08-08 15:57:25 -07:00
squashfs	…
sysfs	…
sysv	…
ubifs	…
udf	udf: saner calling conventions for udf_new_inode()	2014-09-04 21:37:41 +02:00
ufs	ufs: fix deadlocks introduced by sb mutex merge	2014-09-07 13:26:39 -04:00
xfs	xfs: trim eofblocks before collapse range	2014-09-02 12:12:53 +10:00
Kconfig	…
Kconfig.binfmt	…
Makefile	take fs_pin stuff to fs/*	2014-08-07 14:40:08 -04:00
aio.c	aio: block exit_aio() until all context requests are completed	2014-09-04 16:54:47 -04:00
anon_inodes.c	…
attr.c	…
bad_inode.c	bad_inode: add ->rename2()	2014-08-07 14:40:09 -04:00
binfmt_aout.c	…
binfmt_elf.c	…
binfmt_elf_fdpic.c	…
binfmt_em86.c	…
binfmt_flat.c	…
binfmt_misc.c	…
binfmt_script.c	…
binfmt_som.c	…
block_dev.c	…
buffer.c	…
char_dev.c	…
compat.c	…
compat_binfmt_elf.c	…
compat_ioctl.c	…
coredump.c	…
dcache.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-09-14 17:37:36 -07:00
dcookies.c	…
direct-io.c	switch iov_iter_get_pages() to passing maximal number of pages	2014-08-07 14:40:11 -04:00
drop_caches.c	…
eventfd.c	…
eventpoll.c	eventpoll: fix uninitialized variable in epoll_ctl	2014-09-10 15:42:12 -07:00
exec.c	fork/exec: cleanup mm initialization	2014-08-08 15:57:23 -07:00
fcntl.c	shm: add sealing API	2014-08-08 15:57:31 -07:00
fhandle.c	…
file.c	…
file_table.c	…
filesystems.c	…
fs-writeback.c	…
fs_pin.c	make fs/{namespace,super}.c forget about acct.h	2014-08-07 14:40:09 -04:00
fs_struct.c	…
inode.c	mm: allow drivers to prevent new writable mappings	2014-08-08 15:57:31 -07:00
internal.h	make fs/{namespace,super}.c forget about acct.h	2014-08-07 14:40:09 -04:00
ioctl.c	…
libfs.c	…
locks.c	locks: pass correct "before" pointer to locks_unlink_lock in generic_add_lease	2014-08-22 09:58:22 -04:00
mbcache.c	…
mount.h	death to mnt_pinned	2014-08-07 14:40:09 -04:00
mpage.c	…
namei.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-09-14 17:37:36 -07:00
namespace.c	fix EBUSY on umount() from MNT_SHRINKABLE	2014-08-30 18:32:05 -04:00
no-block.c	…
open.c	…
pipe.c	…
pnode.c	get rid of propagate_umount() mistakenly treating slaves as busy.	2014-08-30 18:31:41 -04:00
pnode.h	…
posix_acl.c	…
proc_namespace.c	…
read_write.c	…
readdir.c	…
select.c	…
seq_file.c	…
signalfd.c	…
splice.c	…
stack.c	…
stat.c	…
statfs.c	…
super.c	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2014-08-13 17:45:40 -06:00
sync.c	Export sync_filesystem() for modular ->remount_fs() use	2014-09-05 08:16:21 -07:00
timerfd.c	…
utimes.c	…
xattr.c	…