Btrfs: split the global ordered extents mutex

[linux-2.6-block.git] / fs / btrfs / ordered-data.c

diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index a75eaa286b8a91bdad4e26de0ed02b08df62e3b8..a94b05f728695c464074a0e070723fec412be9bc 100644 (file)
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -595,7 +595,7 @@ static void btrfs_run_ordered_extent_work(struct btrfs_work *work)
  * wait for all the ordered extents in a root.  This is done when balancing
  * space between drives.
  */
-static int __btrfs_wait_ordered_extents(struct btrfs_root *root, int nr)
+int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr)
 {
        struct list_head splice, works;
        struct btrfs_ordered_extent *ordered, *next;
@@ -604,6 +604,7 @@ static int __btrfs_wait_ordered_extents(struct btrfs_root *root, int nr)
        INIT_LIST_HEAD(&splice);
        INIT_LIST_HEAD(&works);
 
+       mutex_lock(&root->ordered_extent_mutex);
        spin_lock(&root->ordered_extent_lock);
        list_splice_init(&root->ordered_extents, &splice);
        while (!list_empty(&splice) && nr) {
@@ -635,17 +636,7 @@ static int __btrfs_wait_ordered_extents(struct btrfs_root *root, int nr)
                btrfs_put_ordered_extent(ordered);
                cond_resched();
        }
-
-       return count;
-}
-
-int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr)
-{
-       int count;
-
-       mutex_lock(&root->fs_info->ordered_operations_mutex);
-       count = __btrfs_wait_ordered_extents(root, nr);
-       mutex_unlock(&root->fs_info->ordered_operations_mutex);
+       mutex_unlock(&root->ordered_extent_mutex);
 
        return count;
 }
@@ -670,7 +661,7 @@ void btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, int nr)
                               &fs_info->ordered_roots);
                spin_unlock(&fs_info->ordered_root_lock);
 
-               done = __btrfs_wait_ordered_extents(root, nr);
+               done = btrfs_wait_ordered_extents(root, nr);
                btrfs_put_fs_root(root);
 
                spin_lock(&fs_info->ordered_root_lock);