BACKPORT: f2fs: sanity check log_blocks_per_seg

f2fs currently only supports 4KB block size and 2MB segment size.
Sanity check log_blocks_per_seg == 9, i.e. 2MB/4KB = (1 << 9)

Partially
(cherry-picked from commit 9a59b62fd88196844cee5fff851bee2cfd7afb6e)

f2fs: do more integrity verification for superblock

Do more sanity check for superblock during ->mount.

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

Signed-off-by: Jin Qian <jinqian@google.com>
Bug: 36817013
Change-Id: I0be52e54fba82083068337ceb9f7ad985a87319f
Tracked-On: https://jira01.devtools.intel.com/browse/AW-6221
Signed-off-by: Victor Tasayco Loarte <victorx.tasayco.loarte@intel.com>
Reviewed-on: https://android.intel.com/594758
Reviewed-by: Louis, FabienX <fabienx.louis@intel.com>
Reviewed-by: Dubray, SimonX <simonx.dubray@intel.com>
Reviewed-by: Ledentec, AlexandreX <alexandrex.ledentec@intel.com>
Reviewed-by: Akue, LoicX <loicx.akue@intel.com>
1 file changed