[PATCH 7/7] f2fs: don't need to flush unlinked dentry pages

[Jaegeuk Kim]

We don't need to flush any dentry pages used by unlinked directory.
They will be truncated by f2fs_evict_inode.

Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
 fs/f2fs/checkpoint.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 4179c7b..e6714cb 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -846,7 +846,8 @@ retry:
        inode = igrab(&fi->vfs_inode);
        spin_unlock(&sbi->inode_lock[type]);
        if (inode) {
-               filemap_fdatawrite(inode->i_mapping);
+               if (inode->i_nlink)
+                       filemap_fdatawrite(inode->i_mapping);
                iput(inode);
        } else {
                /*
-- 
2.8.3