btrfs: clean up transaction abort messages

The transaction abort stacktrace is printed only once per module
lifetime, but we'd like to see it each time it happens per mounted
filesystem.  Introduce a fs_state flag that records it.

Tweak the messages around abort:
* add error number to the first abort
* print the exact negative errno from btrfs_decode_error
* clean up btrfs_decode_error and callers
* no dots at the end of the messages

Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 0d82922179db..e2f14b5258b6 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -340,6 +340,7 @@ static inline unsigned long btrfs_chunk_item_size(int num_stripes)
  */
 #define BTRFS_FS_STATE_ERROR            0
 #define BTRFS_FS_STATE_REMOUNTING       1
+#define BTRFS_FS_STATE_TRANS_ABORTED    2
 
 /* Super block flags */
 /* Errors detected */