tree 4cacd50cf5624b8b597ad37b5ba953beff8f21a5
parent 36b35a0dbe904a06e94154f29db0d0e218420c98
author Fan Li <fanofcode.li@samsung.com> 1450329659 +0800
committer Jaegeuk Kim <jaegeuk@kernel.org> 1450374882 -0800

f2fs: optimize the flow of f2fs_map_blocks

check map->m_len right after it changes to avoid excess call
to update dnode_of_data.

Signed-off-by: Fan li <fanofcode.li@samsung.com>
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>