Josef Bacik 0a24325e6d Btrfs: don't keep retrying a block group if we fail to allocate a cluster ... The box can get locked up in the allocator if we happen upon a block group under these conditions: 1) During a commit, so caching threads cannot make progress 2) Our block group currently is in the middle of being cached 3) Our block group currently has plenty of free space in it 4) Our block group is so fragmented that it ends up having no free space chunks larger than min_bytes calculated by btrfs_find_space_cluster. What happens is we try and do btrfs_find_space_cluster, which fails because it is unable to find enough free space chunks that are large than min_bytes and are close enough together. Since the block group is not cached we do a wait_block_group_cache_progress, which waits for the number of bytes we need, except the block group already has _plenty_ of free space, its just severely fragmented, so we loop and try again, ad infinitum. This patch keeps us from waiting on the block group to finish caching if we failed to find a free space cluster before. It also makes sure that we don't even try to find a free space cluster if we are on our last loop in the allocator, since we will have tried everything at this point at it is futile. Signed-off-by: Josef Bacik <jbacik@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>		2009-09-21 19:23:49 -04:00
..
acl.c	helpers for acl caching + switch to those	2009-06-24 08:17:07 -04:00
async-thread.c	Btrfs: Fix async thread shutdown race	2009-09-15 20:20:17 -04:00
async-thread.h	Btrfs: keep irqs on more often in the worker threads	2009-09-11 13:31:04 -04:00
btrfs_inode.h	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
compat.h	Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code	2009-01-06 09:38:55 -05:00
compression.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable	2009-09-11 19:07:25 -04:00
compression.h	Btrfs: Add zlib compression support	2008-10-29 14:49:59 -04:00
ctree.c	Btrfs: Avoid delayed reference update looping	2009-07-24 12:42:46 -04:00
ctree.h	Btrfs: make balance code choose more wisely when relocating	2009-09-21 19:23:48 -04:00
delayed-ref.c	Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)	2009-06-10 11:29:46 -04:00
delayed-ref.h	Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)	2009-06-10 11:29:46 -04:00
dir-item.c	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
disk-io.c	Btrfs: add snapshot/subvolume destroy ioctl	2009-09-21 16:00:26 -04:00
disk-io.h	Btrfs: leave btree locks spinning more often	2009-03-24 16:14:28 -04:00
export.c	Btrfs: add snapshot/subvolume destroy ioctl	2009-09-21 16:00:26 -04:00
export.h	NFS support for btrfs - v3	2008-09-25 11:04:06 -04:00
extent_io.c	Btrfs: properly honor wbc->nr_to_write changes	2009-09-18 16:08:46 -04:00
extent_io.h	Btrfs: Use PagePrivate2 to track pages in the data=ordered code.	2009-09-11 13:31:07 -04:00
extent_map.c	Btrfs: search for an allocation hint while filling file COW	2009-09-18 16:08:52 -04:00
extent_map.h	Btrfs: search for an allocation hint while filling file COW	2009-09-18 16:08:52 -04:00
extent-tree.c	Btrfs: don't keep retrying a block group if we fail to allocate a cluster	2009-09-21 19:23:49 -04:00
file-item.c	Btrfs: leave btree locks spinning more often	2009-03-24 16:14:28 -04:00
file.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable	2009-09-11 19:07:25 -04:00
free-space-cache.c	Btrfs: fix btrfs_remove_from_free_space corner case	2009-07-31 11:03:58 -04:00
free-space-cache.h	Btrfs: use hybrid extents+bitmap rb tree for free space	2009-07-24 09:23:30 -04:00
hash.h	Btrfs: remove crc32c.h and use libcrc32c directly.	2009-06-10 11:29:53 -04:00
inode-item.c	Btrfs: do not reuse objectid of deleted snapshot/subvol	2009-09-21 15:56:00 -04:00
inode-map.c	Btrfs: do not reuse objectid of deleted snapshot/subvol	2009-09-21 15:56:00 -04:00
inode.c	Btrfs: add snapshot/subvolume destroy ioctl	2009-09-21 16:00:26 -04:00
ioctl.c	Btrfs: fix arithmetic error in clone ioctl	2009-09-21 16:00:27 -04:00
ioctl.h	Btrfs: add snapshot/subvolume destroy ioctl	2009-09-21 16:00:26 -04:00
Kconfig	Btrfs: make btrfs acls selectable	2009-02-04 09:28:28 -05:00
locking.c	Btrfs: fix typos in comments	2009-04-02 16:46:06 -04:00
locking.h	Btrfs: fix spinlock assertions on UP systems	2009-03-09 11:45:38 -04:00
Makefile	Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)	2009-06-10 11:29:46 -04:00
ordered-data.c	Btrfs: Use PagePrivate2 to track pages in the data=ordered code.	2009-09-11 13:31:07 -04:00
ordered-data.h	Btrfs: Use PagePrivate2 to track pages in the data=ordered code.	2009-09-11 13:31:07 -04:00
orphan.c	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
print-tree.c	Btrfs: remove of redundant btrfs_header_level	2009-07-22 16:52:13 -04:00
print-tree.h	Btrfs: Create extent_buffer interface for large blocksizes	2008-09-25 11:03:56 -04:00
ref-cache.c	Btrfs: Make btrfs_drop_snapshot work in larger and more efficient chunks	2009-02-04 09:27:02 -05:00
ref-cache.h	Btrfs: Make btrfs_drop_snapshot work in larger and more efficient chunks	2009-02-04 09:27:02 -05:00
relocation.c	Btrfs: add snapshot/subvolume destroy ioctl	2009-09-21 16:00:26 -04:00
root-tree.c	Btrfs: add snapshot/subvolume destroy ioctl	2009-09-21 16:00:26 -04:00
struct-funcs.c	Btrfs: Fix checkpatch.pl warnings	2009-01-05 21:25:51 -05:00
super.c	Btrfs: add snapshot/subvolume destroy ioctl	2009-09-21 16:00:26 -04:00
sysfs.c	Btrfs: Fix checkpatch.pl warnings	2009-01-05 21:25:51 -05:00
transaction.c	Btrfs: add snapshot/subvolume destroy ioctl	2009-09-21 16:00:26 -04:00
transaction.h	Btrfs: be more polite in the async caching threads	2009-07-30 10:14:46 -04:00
tree-defrag.c	Btrfs: do extent allocation and reference count updates in the background	2009-03-24 16:14:25 -04:00
tree-log.c	Btrfs: add snapshot/subvolume destroy ioctl	2009-09-21 16:00:26 -04:00
tree-log.h	Btrfs: tree logging unlink/rename fixes	2009-03-24 16:14:52 -04:00
version.h	Update Btrfs files for in-kernel usage	2008-09-25 15:41:59 -04:00
version.sh	Btrfs: Fixes for 2.6.28-rc API changes	2008-11-19 21:17:22 -05:00
volumes.c	Btrfs: make balance code choose more wisely when relocating	2009-09-21 19:23:48 -04:00
volumes.h	Btrfs: make balance code choose more wisely when relocating	2009-09-21 19:23:48 -04:00
xattr.c	Btrfs: selinux support	2009-02-04 09:29:13 -05:00
xattr.h	Btrfs: selinux support	2009-02-04 09:29:13 -05:00
zlib.c	Btrfs: correct error-handling zlib error handling	2009-08-07 13:51:33 -04:00