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authorMark Brown <broonie@kernel.org>2015-09-16 20:44:25 +0100
committerMark Brown <broonie@kernel.org>2015-09-16 20:44:25 +0100
commit92243b6fc8fcb16bf401b055f7a0ba79f70a4115 (patch)
tree08e9fa205efb9bfab23b6ea59fc0a3eaa3fed82b /fs/btrfs/locking.c
parenta394d635193b641f2c86ead5ada5b115d57c51f8 (diff)
parent6ff33f3902c3b1c5d0db6b1e2c70b6d76fba357f (diff)
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Merge tag 'v4.3-rc1' into spi-fix-doc
Linux 4.3-rc1
Diffstat (limited to 'fs/btrfs/locking.c')
-rw-r--r--fs/btrfs/locking.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c
index f8229ef1b46d..d7e6baf1b205 100644
--- a/fs/btrfs/locking.c
+++ b/fs/btrfs/locking.c
@@ -241,6 +241,7 @@ void btrfs_tree_read_unlock_blocking(struct extent_buffer *eb)
*/
void btrfs_tree_lock(struct extent_buffer *eb)
{
+ WARN_ON(eb->lock_owner == current->pid);
again:
wait_event(eb->read_lock_wq, atomic_read(&eb->blocking_readers) == 0);
wait_event(eb->write_lock_wq, atomic_read(&eb->blocking_writers) == 0);