From 783577663507411e36e459390ef056556e93ef29 Mon Sep 17 00:00:00 2001 From: Filipe David Borba Manana Date: Thu, 12 Dec 2013 19:19:52 +0000 Subject: Btrfs: return immediately if tree log mod is not necessary In ctree.c:tree_mod_log_set_node_key() we were calling __tree_mod_log_insert_key() even when the modification doesn't need to be logged. This would allocate a tree_mod_elem structure, fill it and pass it to __tree_mod_log_insert(), which would just acquire the tree mod log write lock and then free the tree_mod_elem structure and return (that is, a no-op). Therefore call tree_mod_log_insert() instead of __tree_mod_log_insert() which just returns immediately if the modification doesn't need to be logged (without allocating the structure, fill it, acquire write lock, free structure). Signed-off-by: Filipe David Borba Manana Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/ctree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/btrfs/ctree.c') diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index a57507aa6702..59664f6cbc4e 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -771,7 +771,7 @@ tree_mod_log_set_node_key(struct btrfs_fs_info *fs_info, { int ret; - ret = __tree_mod_log_insert_key(fs_info, eb, slot, + ret = tree_mod_log_insert_key(fs_info, eb, slot, MOD_LOG_KEY_REPLACE, atomic ? GFP_ATOMIC : GFP_NOFS); BUG_ON(ret < 0); -- cgit v1.2.3