Arne Jansen 1fa11e265f Btrfs: fix deadlock in wait_for_more_refs ... Commit a168650c introduced a waiting mechanism to prevent busy waiting in btrfs_run_delayed_refs. This can deadlock with btrfs_run_ordered_operations, where a tree_mod_seq is held while waiting for the io to complete, while the end_io calls btrfs_run_delayed_refs. This whole mechanism is unnecessary. If not enough runnable refs are available to satisfy count, just return as count is more like a guideline than a strict requirement. In case we have to run all refs, commit transaction makes sure that no other threads are working in the transaction anymore, so we just assert here that no refs are blocked. Signed-off-by: Arne Jansen <sensille@gmx.net> Signed-off-by: Chris Mason <chris.mason@fusionio.com>		2012-08-28 16:53:32 -04:00
..
acl.c	Btrfs: cache no acl on new inodes	2012-05-30 10:23:27 -04:00
async-thread.c	Btrfs: call the ordered free operation without any locks held	2012-07-25 16:15:07 -04:00
async-thread.h
backref.c	Btrfs: fix that error value is changed by mistake	2012-08-28 16:53:28 -04:00
backref.h	Merge branch 'send-v2' of git://github.com/ablock84/linux-btrfs into for-linus	2012-07-25 19:19:10 -04:00
btrfs_inode.h	Btrfs: kill free_space pointer from inode structure	2012-07-23 16:28:05 -04:00
check-integrity.c	Btrfs: introduce subvol uuids and times	2012-07-25 23:28:38 +02:00
check-integrity.h
compat.h
compression.c	Merge branch 'for-linus-min' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2012-04-13 19:41:27 -07:00
compression.h
ctree.c	Btrfs: fix deadlock in wait_for_more_refs	2012-08-28 16:53:32 -04:00
ctree.h	Btrfs: fix deadlock in wait_for_more_refs	2012-08-28 16:53:32 -04:00
delayed-inode.c	btrfs: fix second lock in btrfs_delete_delayed_items()	2012-08-28 16:53:31 -04:00
delayed-inode.h	Btrfs: flush delayed inodes if we're short on space	2012-07-23 15:41:40 -04:00
delayed-ref.c	Btrfs: fix deadlock in wait_for_more_refs	2012-08-28 16:53:32 -04:00
delayed-ref.h	Btrfs: hooks for qgroup to record delayed refs	2012-07-12 10:54:38 +02:00
dir-item.c	btrfs: replace many BUG_ONs with proper error handling	2012-03-22 11:52:54 +01:00
disk-io.c	Btrfs: fix deadlock in wait_for_more_refs	2012-08-28 16:53:32 -04:00
disk-io.h	Btrfs: added helper to create new trees	2012-07-10 15:14:43 +02:00
export.c	->encode_fh() API change	2012-05-29 23:28:33 -04:00
export.h
extent-tree.c	Btrfs: fix deadlock in wait_for_more_refs	2012-08-28 16:53:32 -04:00
extent_io.c	Btrfs: improve multi-thread buffer read	2012-07-23 16:28:10 -04:00
extent_io.h	Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into for-linus	2012-05-31 16:49:53 -04:00
extent_map.c
extent_map.h
file-item.c	Btrfs: don't allocate a seperate csums array for direct reads	2012-08-28 16:53:30 -04:00
file.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2012-07-05 13:06:25 -07:00
free-space-cache.c	Btrfs: do not count in readonly bytes	2012-07-23 16:28:03 -04:00
free-space-cache.h
hash.h
inode-item.c	Merge branch 'error-handling' into for-linus	2012-03-28 20:31:37 -04:00
inode-map.c	Btrfs: show useful info in space reservation tracepoint	2012-03-29 09:57:44 -04:00
inode-map.h
inode.c	Btrfs: don't allocate a seperate csums array for direct reads	2012-08-28 16:53:30 -04:00
ioctl.c	Btrfs: fix some endian bugs handling the root times	2012-08-28 16:53:26 -04:00
ioctl.h	Merge branch 'send-v2' of git://github.com/ablock84/linux-btrfs into for-linus	2012-07-25 19:19:10 -04:00
Kconfig
locking.c	Btrfs: fix a misplaced address operator in a condition	2012-08-28 16:53:23 -04:00
locking.h
lzo.c
Makefile	Merge branch 'send-v2' of git://github.com/ablock84/linux-btrfs into for-linus	2012-07-25 19:19:10 -04:00
ordered-data.c	Btrfs: call filemap_fdatawrite twice for compression	2012-06-14 21:30:54 -04:00
ordered-data.h	Btrfs: finish ordered extents in their own thread	2012-05-30 10:23:33 -04:00
orphan.c	btrfs: replace many BUG_ONs with proper error handling	2012-03-22 11:52:54 +01:00
print-tree.c	Btrfs: read device stats on mount, write modified ones during commit	2012-05-30 10:23:41 -04:00
print-tree.h
qgroup.c	Btrfs: checking for NULL instead of IS_ERR	2012-08-28 16:53:25 -04:00
rcu-string.h	Btrfs: use rcu to protect device->name	2012-06-14 21:29:16 -04:00
reada.c	Btrfs: set ioprio of scrub readahead to idle	2012-05-30 10:23:43 -04:00
relocation.c	Btrfs: fix error handling in __add_reloc_root()	2012-07-23 16:27:53 -04:00
root-tree.c	Btrfs: fix some endian bugs handling the root times	2012-08-28 16:53:26 -04:00
scrub.c	Btrfs: use rcu to protect device->name	2012-06-14 21:29:16 -04:00
send.c	Btrfs: uninit variable fixes in send/receive	2012-07-25 19:21:10 -04:00
send.h	Btrfs: introduce BTRFS_IOC_SEND for btrfs send/receive	2012-07-25 23:30:19 +02:00
struct-funcs.c	Btrfs: rewrite BTRFS_SETGET_FUNCS	2012-07-23 16:28:06 -04:00
super.c	Btrfs: do not use missing devices when showing devname	2012-08-28 16:53:29 -04:00
sysfs.c
transaction.c	Btrfs: fix some endian bugs handling the root times	2012-08-28 16:53:26 -04:00
transaction.h	Merge branch 'qgroup' of git://git.jan-o-sch.net/btrfs-unstable into for-linus	2012-07-25 16:11:38 -04:00
tree-defrag.c
tree-log.c	Btrfs: return error of btrfs_update_inode() to caller	2012-07-23 16:27:54 -04:00
tree-log.h
ulist.c	Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into for-linus	2012-05-31 16:49:53 -04:00
ulist.h	Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into for-linus	2012-05-31 16:49:53 -04:00
version.h
volumes.c	Btrfs: do not strdup non existent strings	2012-08-28 16:53:29 -04:00
volumes.h	Btrfs: add DEVICE_READY ioctl	2012-07-23 16:27:42 -04:00
xattr.c	Btrfs: use i_version instead of our own sequence	2012-05-30 10:23:27 -04:00
xattr.h
zlib.c