Josef Bacik 9e351cc862 Btrfs: remove transaction from send ... Lets try this again. We can deadlock the box if we send on a box and try to write onto the same fs with the app that is trying to listen to the send pipe. This is because the writer could get stuck waiting for a transaction commit which is being blocked by the send. So fix this by making sure looking at the commit roots is always going to be consistent. We do this by keeping track of which roots need to have their commit roots swapped during commit, and then taking the commit_root_sem and swapping them all at once. Then make sure we take a read lock on the commit_root_sem in cases where we search the commit root to make sure we're always looking at a consistent view of the commit roots. Previously we had problems with this because we would swap a fs tree commit root and then swap the extent tree commit root independently which would cause the backref walking code to screw up sometimes. With this patch we no longer deadlock and pass all the weird send/receive corner cases. Thanks, Reportedy-by: Hugo Mills <hugo@carfax.org.uk> Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chris Mason <clm@fb.com>		2014-04-06 17:39:30 -07:00
..
tests	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
acl.c	btrfs: remove dead code	2014-01-28 13:19:50 -08:00
async-thread.c	btrfs: Add trace for btrfs_workqueue alloc/destroy	2014-03-20 17:15:28 -07:00
async-thread.h	btrfs: Add trace for btrfs_workqueue alloc/destroy	2014-03-20 17:15:28 -07:00
backref.c	Btrfs: remove transaction from send	2014-04-06 17:39:30 -07:00
backref.h	Btrfs: allocate prelim_ref with a slab allocater	2013-09-01 08:16:27 -04:00
btrfs_inode.h	Btrfs: use signed integer instead of unsigned long integer for log transid	2014-03-10 15:16:42 -04:00
check-integrity.c	Btrfs: use btrfs_crc32c everywhere instead of libcrc32c	2014-02-03 09:01:27 -08:00
check-integrity.h	block: submit_bio_wait() conversions	2013-11-24 16:33:41 -07:00
compression.c	Btrfs: fix data corruption when reading/updating compressed extents	2014-02-08 17:57:15 -08:00
compression.h	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
ctree.c	Btrfs: remove transaction from send	2014-04-06 17:39:30 -07:00
ctree.h	Btrfs: remove transaction from send	2014-04-06 17:39:30 -07:00
delayed-inode.c	btrfs: Cleanup the "_struct" suffix in btrfs_workequeue	2014-03-10 15:17:16 -04:00
delayed-inode.h	Btrfs: introduce the delayed inode ref deletion for the single link inode	2014-01-28 13:20:09 -08:00
delayed-ref.c	Btrfs: fix race when updating existing ref head	2014-03-20 17:15:28 -07:00
delayed-ref.h	Btrfs: attach delayed ref updates to delayed ref heads	2014-01-28 13:20:25 -08:00
dev-replace.c	Btrfs: don't flush all delalloc inodes when we doesn't get s_umount lock	2014-03-10 15:17:27 -04:00
dev-replace.h	Btrfs: add new sources for device replace code	2012-12-12 17:15:41 -05:00
dir-item.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
disk-io.c	Btrfs: remove transaction from send	2014-04-06 17:39:30 -07:00
disk-io.h	Btrfs: add a sanity test for btrfs_split_item	2013-11-11 21:51:02 -05:00
export.c	btrfs: remove fs/btrfs/compat.h	2013-11-11 22:03:19 -05:00
export.h	NFS support for btrfs - v3	2008-09-25 11:04:06 -04:00
extent_io.c	Btrfs: don't clear uptodate if the eb is under IO	2014-04-06 17:34:37 -07:00
extent_io.h	Btrfs: don't clear uptodate if the eb is under IO	2014-04-06 17:34:37 -07:00
extent_map.c	Btrfs: more efficient btrfs_drop_extent_cache	2014-03-10 15:16:57 -04:00
extent_map.h	Btrfs: more efficient btrfs_drop_extent_cache	2014-03-10 15:16:57 -04:00
extent-tree.c	Btrfs: remove transaction from send	2014-04-06 17:39:30 -07:00
file-item.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
file.c	Btrfs: fix a crash of clone with inline extents's split	2014-03-21 17:35:18 -07:00
free-space-cache.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
free-space-cache.h	Btrfs: remove path arg from btrfs_truncate_free_space_cache	2013-11-11 21:51:33 -05:00
hash.c	Btrfs: fix btrfs boot when compiled as built-in	2014-01-28 13:20:31 -08:00
hash.h	Btrfs: fix btrfs boot when compiled as built-in	2014-01-28 13:20:31 -08:00
inode-item.c	btrfs: cleanup: removed unused 'btrfs_get_inode_ref_index'	2014-01-28 13:19:39 -08:00
inode-map.c	Btrfs: remove transaction from send	2014-04-06 17:39:30 -07:00
inode-map.h	Btrfs: Support reading/writing on disk free ino cache	2011-04-25 16:46:11 +08:00
inode.c	Btrfs: fix possible empty list access when flushing the delalloc inodes	2014-03-10 15:17:29 -04:00
ioctl.c	Btrfs: fix a crash of clone with inline extents's split	2014-03-21 17:35:18 -07:00
Kconfig	Btrfs: fix btrfs boot when compiled as built-in	2014-01-28 13:20:31 -08:00
locking.c	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
locking.h	Btrfs: remove btrfs_try_spin_lock	2013-03-14 14:57:10 -04:00
lzo.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
Makefile	Btrfs: fix btrfs boot when compiled as built-in	2014-01-28 13:20:31 -08:00
math.h	Btrfs: cleanup duplicated division functions	2012-12-11 13:31:30 -05:00
ordered-data.c	Btrfs: split the global ordered extents mutex	2014-03-10 15:17:28 -04:00
ordered-data.h	btrfs: Cleanup the "_struct" suffix in btrfs_workequeue	2014-03-10 15:17:16 -04:00
orphan.c	btrfs: expand btrfs_find_item() to include find_orphan_item functionality	2014-01-28 13:19:37 -08:00
print-tree.c	Btrfs: don't use ram_bytes for uncompressed inline items	2014-01-29 07:06:29 -08:00
print-tree.h	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
props.c	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
props.h	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
qgroup.c	btrfs: Cleanup the "_struct" suffix in btrfs_workequeue	2014-03-10 15:17:16 -04:00
raid56.c	btrfs: Cleanup the "_struct" suffix in btrfs_workequeue	2014-03-10 15:17:16 -04:00
raid56.h	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
rcu-string.h	Btrfs: use rcu to protect device->name	2012-06-14 21:29:16 -04:00
reada.c	btrfs: Cleanup the "_struct" suffix in btrfs_workequeue	2014-03-10 15:17:16 -04:00
relocation.c	Btrfs: do not reset last_snapshot after relocation	2014-04-06 17:34:35 -07:00
root-tree.c	btrfs: Use PTR_ERR_OR_ZERO	2014-03-10 15:16:51 -04:00
scrub.c	btrfs: Cleanup the "_struct" suffix in btrfs_workequeue	2014-03-10 15:17:16 -04:00
send.c	Btrfs: remove transaction from send	2014-04-06 17:39:30 -07:00
send.h	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
struct-funcs.c	Btrfs: rewrite BTRFS_SETGET_FUNCS	2012-07-23 16:28:06 -04:00
super.c	btrfs: Cleanup the old btrfs_worker.	2014-03-10 15:17:15 -04:00
sysfs.c	btrfs: add simple debugfs interface	2014-03-10 15:15:51 -04:00
sysfs.h	btrfs: add simple debugfs interface	2014-03-10 15:15:51 -04:00
transaction.c	Btrfs: remove transaction from send	2014-04-06 17:39:30 -07:00
transaction.h	Btrfs: remove transaction from send	2014-04-06 17:39:30 -07:00
tree-defrag.c	Btrfs: cleanup dead code of defragment	2013-11-11 21:59:45 -05:00
tree-log.c	Btrfs: stop joining the log transaction if sync log fails	2014-03-10 15:16:44 -04:00
tree-log.h	Btrfs: just wait or commit our own log sub-transaction	2014-03-10 15:16:43 -04:00
ulist.c	Btrfs: do not export ulist functions	2014-01-29 07:06:27 -08:00
ulist.h	Btrfs: do not export ulist functions	2014-01-29 07:06:27 -08:00
uuid-tree.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
volumes.c	btrfs: Cleanup the "_struct" suffix in btrfs_workequeue	2014-03-10 15:17:16 -04:00
volumes.h	btrfs: Cleanup the "_struct" suffix in btrfs_workequeue	2014-03-10 15:17:16 -04:00
xattr.c	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
xattr.h	fs/vfs/security: pass last path component to LSM on inode creation	2011-02-01 11:12:29 -05:00
zlib.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00