Btrfs: insert_new_root: Fix lock type of the extent buffer.

chandan · masoncl · commit 95449a1626fb · 2015-01-22T05:42:23.000-08:00
btrfs_alloc_tree_block() returns an extent buffer on which a blocked lock has
been taken. Hence assign the appropriate value to path-&gt;locks[level].

Signed-off-by: Chandan Rajendra &lt;chandan@linux.vnet.ibm.com&gt;
Signed-off-by: Chris Mason &lt;clm@fb.com&gt;
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
@@ -3380,7 +3380,7 @@ static noinline int insert_new_root(struct btrfs_trans_handle *trans,
 	add_root_to_dirty_list(root);
 	extent_buffer_get(c);
 	path->nodes[level] = c;
-	path->locks[level] = BTRFS_WRITE_LOCK;
+	path->locks[level] = BTRFS_WRITE_LOCK_BLOCKING;
 	path->slots[level] = 0;
 	return 0;
 }

Original file line number	Diff line number	Diff line change
`@@ -3380,7 +3380,7 @@ static noinline int insert_new_root(struct btrfs_trans_handle *trans,`
`3380`	`3380`	`add_root_to_dirty_list(root);`
`3381`	`3381`	`extent_buffer_get(c);`
`3382`	`3382`	`path->nodes[level] = c;`
`3383`		`- path->locks[level] = BTRFS_WRITE_LOCK;`
	`3383`	`+ path->locks[level] = BTRFS_WRITE_LOCK_BLOCKING;`
`3384`	`3384`	`path->slots[level] = 0;`
`3385`	`3385`	`return 0;`
`3386`	`3386`	`}`