f2fs: fix incorrect mapping in ->bmap
authorChao Yu <yuchao0@huawei.com>
Thu, 5 May 2016 11:13:02 +0000 (19:13 +0800)
committerJaegeuk Kim <jaegeuk@kernel.org>
Sat, 7 May 2016 17:32:32 +0000 (10:32 -0700)
commit43473f96453f0b075c480a26ec4fc846d5fb3bd4
treeb006060f4d1b8f34616b949c9dc4f278b39015cd
parentfb58ae22067e0595d974e3d856522c1ed6d2d7bf
f2fs: fix incorrect mapping in ->bmap

Currently, generic_block_bmap is used in f2fs_bmap, its semantics is when
the mapping is been found, return position of target physical block,
otherwise return zero.

But, previously, when there is no mapping info for specified logical block,
f2fs_bmap will map target physical block to a uninitialized variable, which
should be wrong. Fix it.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
fs/f2fs/data.c