Filipe Manana 8eab77ff16 Btrfs: use global reserve when deleting unused block group after ENOSPC ... It's possible to reach a state where the cleaner kthread isn't able to start a transaction to delete an unused block group due to lack of enough free metadata space and due to lack of unallocated device space to allocate a new metadata block group as well. If this happens try to use space from the global block group reserve just like we do for unlink operations, so that we don't reach a permanent state where starting a transaction for filesystem operations (file creation, renames, etc) keeps failing with -ENOSPC. Such an unfortunate state was observed on a machine where over a dozen unused data block groups existed and the cleaner kthread was failing to delete them due to ENOSPC error when attempting to start a transaction, and even running balance with a -dusage=0 filter failed with ENOSPC as well. Also unmounting and mounting again the filesystem didn't help. Allowing the cleaner kthread to use the global block reserve to delete the unused data block groups fixed the problem. Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Chris Mason <clm@fb.com>		2015-11-25 05:19:50 -08:00
..
tests	Btrfs: tests: checking for NULL instead of IS_ERR()	2015-11-25 05:19:50 -08:00
acl.c
async-thread.c
async-thread.h
backref.c	btrfs: fix use after free iterating extrefs	2015-10-26 19:38:28 -07:00
backref.h
btrfs_inode.h
check-integrity.c	Merge branch 'cleanups/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.4	2015-10-21 18:21:40 -07:00
check-integrity.h
compression.c	Merge branch 'cleanups/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.4	2015-10-21 18:21:40 -07:00
compression.h
ctree.c	Merge branch 'cleanups/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.4	2015-10-21 18:21:40 -07:00
ctree.h	Btrfs: use global reserve when deleting unused block group after ENOSPC	2015-11-25 05:19:50 -08:00
delayed-inode.c	btrfs: comment the rest of implicit barriers before waitqueue_active	2015-10-10 18:42:00 +02:00
delayed-inode.h
delayed-ref.c	btrfs: qgroup: Fix a race in delayed_ref which leads to abort trans	2015-10-26 19:44:39 -07:00
delayed-ref.h	btrfs: qgroup: Fix a race in delayed_ref which leads to abort trans	2015-10-26 19:44:39 -07:00
dev-replace.c	Merge branch 'fix/waitqueue-barriers' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.4	2015-10-12 16:24:40 -07:00
dev-replace.h
dir-item.c
disk-io.c	btrfs: qgroup: exit the rescan worker during umount	2015-11-05 10:32:20 +00:00
disk-io.h	Btrfs: add btrfs_read_dev_one_super() to read one specific SB	2015-10-01 17:29:38 +02:00
export.c	BTRFS: support NFSv2 export	2015-10-06 06:55:23 -07:00
export.h
extent-tree.c	Btrfs: use global reserve when deleting unused block group after ENOSPC	2015-11-25 05:19:50 -08:00
extent-tree.h
extent_io.c	btrfs: extent_io: Introduce new function clear_record_extent_bits()	2015-10-21 18:37:44 -07:00
extent_io.h	btrfs: qgroup: Introduce btrfs_qgroup_reserve_data function	2015-10-21 18:37:45 -07:00
extent_map.c
extent_map.h
file-item.c
file.c	btrfs: fix signed overflows in btrfs_sync_file	2015-11-25 05:19:50 -08:00
free-space-cache.c	Btrfs: don't do extra bitmap search in one bit case	2015-10-21 18:55:41 -07:00
free-space-cache.h	Btrfs: keep track of largest extent in bitmaps	2015-10-21 18:55:40 -07:00
hash.c
hash.h
inode-item.c	Btrfs: consolidate btrfs_error() to btrfs_std_error()	2015-09-29 16:30:00 +02:00
inode-map.c	btrfs: qgroup: Cleanup old inaccurate facilities	2015-10-21 18:41:06 -07:00
inode-map.h
inode.c	Btrfs: use global reserve when deleting unused block group after ENOSPC	2015-11-25 05:19:50 -08:00
ioctl.c	btrfs: check unsupported filters in balance arguments	2015-10-26 19:38:26 -07:00
Kconfig
locking.c	btrfs: comment the rest of implicit barriers before waitqueue_active	2015-10-10 18:42:00 +02:00
locking.h
lzo.c
Makefile
math.h
ordered-data.c	Btrfs: change how we wait for pending ordered extents	2015-10-21 18:51:40 -07:00
ordered-data.h	Btrfs: change how we wait for pending ordered extents	2015-10-21 18:51:40 -07:00
orphan.c
print-tree.c
print-tree.h
props.c	btrfs: cleanup iterating over prop_handlers array	2015-10-21 18:28:48 +02:00
props.h
qgroup.c	Btrfs: fix sleeping inside atomic context in qgroup rescan worker	2015-11-05 11:02:22 +00:00
qgroup.h	btrfs: qgroup: Check if qgroup reserved space leaked	2015-10-21 18:41:10 -07:00
raid56.c	btrfs: comment waitqueue_active implied by locks	2015-10-10 18:35:10 +02:00
raid56.h
rcu-string.h
reada.c	btrfs: reada: Fix returned errno code	2015-10-21 18:29:50 +02:00
relocation.c	Btrfs: fix regression running delayed references when using qgroups	2015-10-25 19:53:26 +00:00
root-tree.c	Merge branch 'cleanups/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.4	2015-10-21 18:21:40 -07:00
scrub.c	btrfs: Remove len argument from scrub_find_csum	2015-11-10 19:27:13 -08:00
send.c	btrfs: fix resending received snapshot with parent	2015-10-13 20:04:10 +01:00
send.h
struct-funcs.c
super.c	Btrfs: add fragment=* debug mount option	2015-10-21 18:51:43 -07:00
sysfs.c	Btrfs: rename super_kobj to fsid_kobj	2015-09-29 16:29:59 +02:00
sysfs.h	Btrfs: rename btrfs_kobj_rm_device to btrfs_sysfs_rm_device_link	2015-09-29 16:29:59 +02:00
transaction.c	Btrfs: use global reserve when deleting unused block group after ENOSPC	2015-11-25 05:19:50 -08:00
transaction.h	Btrfs: use global reserve when deleting unused block group after ENOSPC	2015-11-25 05:19:50 -08:00
tree-defrag.c
tree-log.c	Btrfs: fix regression running delayed references when using qgroups	2015-10-25 19:53:26 +00:00
tree-log.h
ulist.c
ulist.h
uuid-tree.c
volumes.c	Btrfs: use global reserve when deleting unused block group after ENOSPC	2015-11-25 05:19:50 -08:00
volumes.h	btrfs: add balance filters limits, stripes and usage to supported mask	2015-10-26 19:38:30 -07:00
xattr.c	Btrfs: fix race when listing an inode's xattrs	2015-11-09 18:34:40 +00:00
xattr.h
zlib.c