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remarkable-linux/fs/btrfs
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Josef Bacik 81317fdedd Btrfs: fix deadlock when throttling transactions 
Hit this nice little deadlock.  What happens is this

__btrfs_end_transaction with throttle set, --use_count so it equals 0
  btrfs_commit_transaction
    <somebody else actually manages to start the commit>
    btrfs_end_transaction --use_count so now its -1 <== BAD
      we just return and wait on the transaction

This is bad because we just return after our use_count is -1 and don't let go
of our num_writer count on the transaction, so the guy committing the
transaction just sits there forever.  Fix this by inc'ing our use_count if we're
going to call commit_transaction so that if we call btrfs_end_transaction it's
valid.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-07-27 12:46:46 -04:00
..
acl.c Merge branch 'cleanups' of git://repo.or.cz/linux-2.6/btrfs-unstable into inode_numbers 2011-05-22 12:33:42 -04:00
async-thread.c Btrfs: don't walk around with task->state != TASK_RUNNING 2010-05-25 10:34:58 -04:00
async-thread.h Btrfs: fix deadlock on async thread startup 2009-10-05 09:44:45 -04:00
btrfs_inode.h Btrfs: fix enospc problems with delalloc 2011-07-27 12:46:44 -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 'cleanups' of git://repo.or.cz/linux-2.6/btrfs-unstable into inode_numbers 2011-05-22 12:33:42 -04:00
compression.h btrfs: rename variables clashing with global function names 2011-05-02 13:57:19 +02:00
ctree.c Btrfs: stop using highmem for extent_buffers 2011-07-27 12:46:45 -04:00
ctree.h Btrfs: fix enospc problems with delalloc 2011-07-27 12:46:44 -04:00
delayed-inode.c btrfs: fix inconsonant inode information 2011-06-27 11:34:27 -04:00
delayed-inode.h btrfs: fix inconsonant inode information 2011-06-27 11:34:27 -04:00
delayed-ref.c btrfs: remove old unused commented out code 2011-05-06 12:34:10 +02:00
delayed-ref.h btrfs: remove all unused functions 2011-05-06 12:34:03 +02:00
dir-item.c Btrfs: try to only do one btrfs_search_slot in do_setxattr 2011-07-11 09:58:45 -04:00
disk-io.c Btrfs: stop using highmem for extent_buffers 2011-07-27 12:46:45 -04:00
disk-io.h Merge branch 'cleanups' of git://repo.or.cz/linux-2.6/btrfs-unstable into inode_numbers 2011-05-22 12:33:42 -04:00
export.c Merge branch 'ino-alloc' of git://repo.or.cz/linux-btrfs-devel into inode_numbers 2011-05-21 09:27:38 -04:00
export.h NFS support for btrfs - v3 2008-09-25 11:04:06 -04:00
extent-tree.c Btrfs: fix BUG_ON() caused by ENOSPC when relocating space 2011-07-27 12:46:45 -04:00
extent_io.c Btrfs: stop using highmem for extent_buffers 2011-07-27 12:46:45 -04:00
extent_io.h Btrfs: stop using highmem for extent_buffers 2011-07-27 12:46:45 -04:00
extent_map.c btrfs: drop gfp parameter from alloc_extent_map 2011-05-02 13:57:21 +02:00
extent_map.h btrfs: drop gfp parameter from alloc_extent_map 2011-05-02 13:57:21 +02:00
file-item.c Btrfs: stop using highmem for extent_buffers 2011-07-27 12:46:45 -04:00
file.c Btrfs: fix enospc problems with delalloc 2011-07-27 12:46:44 -04:00
free-space-cache.c Btrfs: use find_or_create_page instead of grab_cache_page 2011-07-27 12:46:43 -04:00
free-space-cache.h btrfs: remove all unused functions 2011-05-06 12:34:03 +02:00
hash.h Btrfs: remove crc32c.h and use libcrc32c directly. 2009-06-10 11:29:53 -04:00
inode-item.c Btrfs: BUG_ON is deleted from the caller of btrfs_truncate_item & btrfs_extend_item 2011-05-23 13:24:39 -04:00
inode-map.c btrfs: add helper for fs_info->closing 2011-06-04 08:11:22 -04:00
inode-map.h Btrfs: Support reading/writing on disk free ino cache 2011-04-25 16:46:11 +08:00
inode.c Btrfs: stop using highmem for extent_buffers 2011-07-27 12:46:45 -04:00
ioctl.c Btrfs: fix enospc problems with delalloc 2011-07-27 12:46:44 -04:00
ioctl.h Btrfs: add mount -o auto_defrag 2011-05-26 17:52:15 -04:00
Kconfig btrfs: Add lzo compression support 2010-12-22 23:15:47 +08:00
locking.c btrfs: remove all unused functions 2011-05-06 12:34:03 +02:00
locking.h btrfs: remove all unused functions 2011-05-06 12:34:03 +02:00
lzo.c Btrfs: Avoid accessing unmapped kernel address 2011-02-16 15:37:58 -05:00
Makefile Merge branch 'for-chris' of git://git.kernel.org/pub/scm/linux/kernel/git/arne/btrfs-unstable-arne into inode_numbers 2011-05-23 06:30:52 -04:00
ordered-data.c Btrfs: add initial tracepoint support for btrfs 2011-03-28 05:37:33 -04:00
ordered-data.h btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
orphan.c Btrfs: fixup return code for btrfs_del_orphan_item 2010-12-09 13:57:15 -05:00
print-tree.c btrfs: fix missing break in switch phrase 2011-01-28 16:40:37 -05:00
print-tree.h Btrfs: Create extent_buffer interface for large blocksizes 2008-09-25 11:03:56 -04:00
ref-cache.c btrfs: remove all unused functions 2011-05-06 12:34:03 +02:00
ref-cache.h btrfs: remove all unused functions 2011-05-06 12:34:03 +02:00
relocation.c Btrfs: use find_or_create_page instead of grab_cache_page 2011-07-27 12:46:43 -04:00
root-tree.c Merge branch 'cleanups_and_fixes' into inode_numbers 2011-05-23 14:37:47 -04:00
scrub.c btrfs: remove unneeded includes from scrub.c 2011-06-10 14:59:52 +02:00
struct-funcs.c Btrfs: stop using highmem for extent_buffers 2011-07-27 12:46:45 -04:00
super.c btrfs: add missing options displayed in mount output 2011-07-06 18:46:43 -04:00
sysfs.c btrfs: Remove unused sysfs code 2011-06-17 14:54:18 -04:00
transaction.c Btrfs: fix deadlock when throttling transactions 2011-07-27 12:46:46 -04:00
transaction.h Merge branch 'for-chris' of 2011-05-28 07:00:39 -04:00
tree-defrag.c btrfs: drop unused parameter from btrfs_release_path 2011-05-02 13:57:22 +02:00
tree-log.c btrfs: fix dereference of ERR_PTR value 2011-06-17 14:54:17 -04:00
tree-log.h btrfs: remove unused function prototypes 2011-05-04 14:01:26 +02:00
version.h Update Btrfs files for in-kernel usage 2008-09-25 15:41:59 -04:00
volumes.c Btrfs: don't panic if we get an error while balancing V2 2011-07-06 18:46:43 -04:00
volumes.h Merge branch 'cleanups_and_fixes' into inode_numbers 2011-05-23 14:37:47 -04:00
xattr.c Btrfs: try to only do one btrfs_search_slot in do_setxattr 2011-07-11 09:58:45 -04:00
xattr.h fs/vfs/security: pass last path component to LSM on inode creation 2011-02-01 11:12:29 -05:00
zlib.c zlib: slim down zlib_deflate() workspace when possible 2011-03-22 17:44:17 -07:00