Merge tag 'writeback-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg...

[firefly-linux-kernel-4.4.55.git] / fs / btrfs / extent-tree.c

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 1e59ed575cc991819a980b1ea6facd9d8a683995..cf54bdfee334287383e7b63badc5a3683e2edf4f 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3689,20 +3689,6 @@ static int can_overcommit(struct btrfs_root *root,
        return 0;
 }
 
-static int writeback_inodes_sb_nr_if_idle_safe(struct super_block *sb,
-                                              unsigned long nr_pages,
-                                              enum wb_reason reason)
-{
-       if (!writeback_in_progress(sb->s_bdi) &&
-           down_read_trylock(&sb->s_umount)) {
-               writeback_inodes_sb_nr(sb, nr_pages, reason);
-               up_read(&sb->s_umount);
-               return 1;
-       }
-
-       return 0;
-}
-
 /*
  * shrink metadata reservation for delalloc
  */
@@ -3735,9 +3721,9 @@ static void shrink_delalloc(struct btrfs_root *root, u64 to_reclaim, u64 orig,
        while (delalloc_bytes && loops < 3) {
                max_reclaim = min(delalloc_bytes, to_reclaim);
                nr_pages = max_reclaim >> PAGE_CACHE_SHIFT;
-               writeback_inodes_sb_nr_if_idle_safe(root->fs_info->sb,
-                                                   nr_pages,
-                                                   WB_REASON_FS_FREE_SPACE);
+               try_to_writeback_inodes_sb_nr(root->fs_info->sb,
+                                             nr_pages,
+                                             WB_REASON_FS_FREE_SPACE);
 
                /*
                 * We need to wait for the async pages to actually start before