linux/fs/btrfs/backref.c
Filipe Manana 480f1ea5e0 Btrfs: read lock extent buffer while walking backrefs
commit 6f7ff6d783 upstream.

Before processing the extent buffer, acquire a read lock on it, so
that we're safe against concurrent updates on the extent buffer.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-05 16:36:37 -07:00

1885 lines
48 KiB