ext4: Fix endianness bug when reading the MMP block

Sparse complained about this endian bug in fs/ext4/mmp.c.

Signed-off-by: Santosh Nayak <santoshprasadnayak@gmail.com>
Reviewed-by: Johann Lombardi <johann@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
index 7ea4ba4..ed6548d 100644 (file)
--- a/fs/ext4/mmp.c
+++ b/fs/ext4/mmp.c
@@ -257,8 +257,8 @@ int ext4_multi_mount_protect(struct super_block *sb,
         * If check_interval in MMP block is larger, use that instead of
         * update_interval from the superblock.
         */
-       if (mmp->mmp_check_interval > mmp_check_interval)
-               mmp_check_interval = mmp->mmp_check_interval;
+       if (le16_to_cpu(mmp->mmp_check_interval) > mmp_check_interval)
+               mmp_check_interval = le16_to_cpu(mmp->mmp_check_interval);
 
        seq = le32_to_cpu(mmp->mmp_seq);
        if (seq == EXT4_MMP_SEQ_CLEAN)