f2fs: do more integrity verification for superblock

commit 9a59b62fd88196844cee5fff851bee2cfd7afb6e upstream.

Do more sanity check for superblock during ->mount.

Bug: 36815012
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: Ie8ea645dc84f56a5e60ca4380c4a7d0528c19239
1 file changed