ext4: fix invalid inode checksum
authorLuo Meng <luomeng12@huawei.com>
Tue, 20 Oct 2020 01:36:31 +0000 (09:36 +0800)
committerTheodore Ts'o <tytso@mit.edu>
Thu, 22 Oct 2020 03:22:38 +0000 (23:22 -0400)
commit1322181170bb01bce3c228b82ae3d5c6b793164f
tree2163ef6027003901e837202288f607fbd375c3be
parentce8c59d197c824789e1ade6f25d36037b4f0faeb
ext4: fix invalid inode checksum

During the stability test, there are some errors:
  ext4_lookup:1590: inode #6967: comm fsstress: iget: checksum invalid.

If the inode->i_iblocks too big and doesn't set huge file flag, checksum
will not be recalculated when update the inode information to it's buffer.
If other inode marks the buffer dirty, then the inconsistent inode will
be flushed to disk.

Fix this problem by checking i_blocks in advance.

Cc: stable@kernel.org
Signed-off-by: Luo Meng <luomeng12@huawei.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Link: https://lore.kernel.org/r/20201020013631.3796673-1-luomeng12@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
fs/ext4/inode.c