Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: don't use spin_is_contended
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 551177c..35443cc 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1530,8 +1530,7 @@
* for higher level blocks, try not to allocate blocks
* with the block and the parent locks held.
*/
- if (level > 0 && !prealloc_block.objectid &&
- btrfs_path_lock_waiting(p, level)) {
+ if (level > 0 && !prealloc_block.objectid) {
u32 size = b->len;
u64 hint = b->start;
diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c
index 68fd9cc..9ebe938 100644
--- a/fs/btrfs/locking.c
+++ b/fs/btrfs/locking.c
@@ -236,25 +236,3 @@
return test_bit(EXTENT_BUFFER_BLOCKING, &eb->bflags) ||
spin_is_locked(&eb->lock);
}
-
-/*
- * btrfs_search_slot uses this to decide if it should drop its locks
- * before doing something expensive like allocating free blocks for cow.
- */
-int btrfs_path_lock_waiting(struct btrfs_path *path, int level)
-{
- int i;
- struct extent_buffer *eb;
-
- for (i = level; i <= level + 1 && i < BTRFS_MAX_LEVEL; i++) {
- eb = path->nodes[i];
- if (!eb)
- break;
- smp_mb();
- if (spin_is_contended(&eb->lock) ||
- waitqueue_active(&eb->lock_wq))
- return 1;
- }
- return 0;
-}
-
diff --git a/fs/btrfs/locking.h b/fs/btrfs/locking.h
index d92e707..6bb0afb 100644
--- a/fs/btrfs/locking.h
+++ b/fs/btrfs/locking.h
@@ -26,8 +26,6 @@
int btrfs_try_tree_lock(struct extent_buffer *eb);
int btrfs_try_spin_lock(struct extent_buffer *eb);
-int btrfs_path_lock_waiting(struct btrfs_path *path, int level);
-
void btrfs_set_lock_blocking(struct extent_buffer *eb);
void btrfs_clear_lock_blocking(struct extent_buffer *eb);
#endif