Mark Fasheh 1152651a08 btrfs: qgroup: account shared subtrees during snapshot delete ... During its tree walk, btrfs_drop_snapshot() will skip any shared subtrees it encounters. This is incorrect when we have qgroups turned on as those subtrees need to have their contents accounted. In particular, the case we're concerned with is when removing our snapshot root leaves the subtree with only one root reference. In those cases we need to find the last remaining root and add each extent in the subtree to the corresponding qgroup exclusive counts. This patch implements the shared subtree walk and a new qgroup operation, BTRFS_QGROUP_OPER_SUB_SUBTREE. When an operation of this type is encountered during qgroup accounting, we search for any root references to that extent and in the case that we find only one reference left, we go ahead and do the math on it's exclusive counts. Signed-off-by: Mark Fasheh <mfasheh@suse.de> Reviewed-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chris Mason <clm@fb.com>		2014-08-15 07:43:14 -07:00
..
tests	Btrfs: fix qgroups sanity test crash or hang	2014-06-13 09:52:24 -07:00
acl.c	btrfs: remove useless ACL check	2014-06-09 17:20:42 -07:00
async-thread.c	btrfs: fix crash in remount(thread_pool=) case	2014-04-07 10:41:52 -07:00
async-thread.h	btrfs: Add trace for btrfs_workqueue alloc/destroy	2014-03-20 17:15:28 -07:00
backref.c	Btrfs: read lock extent buffer while walking backrefs	2014-08-15 07:43:13 -07:00
backref.h	Btrfs: fix scrub_print_warning to handle skinny metadata extents	2014-06-09 17:21:17 -07:00
btrfs_inode.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2014-06-11 09:22:21 -07:00
check-integrity.c	btrfs: check_int: propagate out-of-memory error upwards	2014-06-09 17:20:21 -07:00
check-integrity.h
compression.c	btrfs compression: reuse recently used workspace	2014-06-28 13:48:46 -07:00
compression.h
ctree.c	Btrfs: __btrfs_mod_ref should always use no_quota	2014-08-15 07:43:11 -07:00
ctree.h	Btrfs: __btrfs_mod_ref should always use no_quota	2014-08-15 07:43:11 -07:00
delayed-inode.c	btrfs: free delayed node outside of root->inode_lock	2014-06-09 17:21:08 -07:00
delayed-inode.h
delayed-ref.c	Btrfs: rework qgroup accounting	2014-06-09 17:20:48 -07:00
delayed-ref.h	Btrfs: rework qgroup accounting	2014-06-09 17:20:48 -07:00
dev-replace.c	btrfs: dev replace should replace the sysfs entry	2014-06-28 13:48:44 -07:00
dev-replace.h
dir-item.c
disk-io.c	Btrfs: fix race between balance recovery and root deletion	2014-07-03 07:04:04 -07:00
disk-io.h	Btrfs: add sanity tests for new qgroup accounting code	2014-06-09 17:20:49 -07:00
export.c
export.h
extent-tree.c	btrfs: qgroup: account shared subtrees during snapshot delete	2014-08-15 07:43:14 -07:00
extent_io.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2014-06-14 19:48:43 -05:00
extent_io.h	Btrfs: remove unused wait queue in struct extent_buffer	2014-06-19 14:20:28 -07:00
extent_map.c	Btrfs: fix NULL pointer crash when running balance and scrub concurrently	2014-06-19 14:20:55 -07:00
extent_map.h	Btrfs: fix NULL pointer crash when running balance and scrub concurrently	2014-06-19 14:20:55 -07:00
file-item.c	Btrfs: make fsync work after cloning into a file	2014-06-09 17:21:16 -07:00
file.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-06-12 10:30:18 -07:00
free-space-cache.c	Btrfs: fix broken free space cache after the system crashed	2014-06-19 14:20:54 -07:00
free-space-cache.h
hash.c
hash.h
inode-item.c
inode-map.c	btrfs: remove newline from inode cache kthread name	2014-06-09 17:20:53 -07:00
inode-map.h
inode.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2014-06-21 14:21:43 -10:00
ioctl.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2014-07-04 08:53:53 -07:00
Kconfig
locking.c	Btrfs: fix deadlocks with trylock on tree nodes	2014-06-19 14:19:55 -07:00
locking.h
lzo.c	btrfs: return errno instead of -1 from compression	2014-06-09 17:20:21 -07:00
Makefile	Btrfs: add sanity tests for new qgroup accounting code	2014-06-09 17:20:49 -07:00
math.h
ordered-data.c	Btrfs: fix abnormal long waiting in fsync	2014-07-19 11:49:44 -07:00
ordered-data.h
orphan.c
print-tree.c	Btrfs: fix btrfs_print_leaf for skinny metadata	2014-07-03 07:04:16 -07:00
print-tree.h
props.c
props.h
qgroup.c	btrfs: qgroup: account shared subtrees during snapshot delete	2014-08-15 07:43:14 -07:00
qgroup.h	btrfs: qgroup: account shared subtrees during snapshot delete	2014-08-15 07:43:14 -07:00
raid56.c	Btrfs: fix crash when mounting raid5 btrfs with missing disks	2014-06-28 13:48:45 -07:00
raid56.h
rcu-string.h
reada.c	Btrfs: fix unfinished readahead thread for raid5/6 degraded mounting	2014-06-13 09:52:21 -07:00
relocation.c	btrfs: remove stale newlines from log messages	2014-06-09 17:20:53 -07:00
root-tree.c	Btrfs: use bitfield instead of integer data type for the some variants in btrfs_root	2014-06-09 17:20:40 -07:00
scrub.c	btrfs: Skip scrubbing removed chunks to avoid -ENOENT.	2014-06-19 14:20:54 -07:00
send.c	Btrfs: send, use the right limits for xattr names and values	2014-06-09 17:21:00 -07:00
send.h
struct-funcs.c
super.c	btrfs: adjust statfs calculations according to raid profiles	2014-08-15 07:43:10 -07:00
sysfs.c	btrfs: dev add should add its sysfs entry	2014-06-28 13:48:43 -07:00
sysfs.h	btrfs: dev add should add its sysfs entry	2014-06-28 13:48:43 -07:00
transaction.c	Btrfs: fix crash when starting transaction	2014-07-03 07:04:18 -07:00
transaction.h	Btrfs: add sanity tests for new qgroup accounting code	2014-06-09 17:20:49 -07:00
tree-defrag.c	Btrfs: use bitfield instead of integer data type for the some variants in btrfs_root	2014-06-09 17:20:40 -07:00
tree-log.c	Btrfs: use helpers for last_trans_log_full_commit instead of opencode	2014-06-09 17:20:45 -07:00
tree-log.h	Btrfs: use helpers for last_trans_log_full_commit instead of opencode	2014-06-09 17:20:45 -07:00
ulist.c
ulist.h
uuid-tree.c
volumes.c	btrfs: test for valid bdev before kobj removal in btrfs_rm_device	2014-07-19 11:49:44 -07:00
volumes.h	Btrfs: fix deadlock when mounting a degraded fs	2014-06-19 14:20:56 -07:00
xattr.c
xattr.h
zlib.c	btrfs: use E2BIG instead of EIO if compression does not help	2014-07-03 07:04:13 -07:00