diff options
| author | Baokun Li <libaokun1@huawei.com> | 2022-11-17 07:03:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-07 13:12:01 +0300 |
| commit | a77f3bdb03d0b2a8f4a3838a3120a6e56170a8bc (patch) | |
| tree | 215469c8ca120b01720aacc5f483037180668381 /fs/ext4 | |
| parent | dad6a26adb5ae452cc771f937b268cd6bf1de778 (diff) | |
| download | linux-a77f3bdb03d0b2a8f4a3838a3120a6e56170a8bc.tar.xz | |
ext4: fix bad checksum after online resize
commit a408f33e895e455f16cf964cb5cd4979b658db7b upstream.
When online resizing is performed twice consecutively, the error message
"Superblock checksum does not match superblock" is displayed for the
second time. Here's the reproducer:
mkfs.ext4 -F /dev/sdb 100M
mount /dev/sdb /tmp/test
resize2fs /dev/sdb 5G
resize2fs /dev/sdb 6G
To solve this issue, we moved the update of the checksum after the
es->s_overhead_clusters is updated.
Fixes: 026d0d27c488 ("ext4: reduce computation of overhead during resize")
Fixes: de394a86658f ("ext4: update s_overhead_clusters in the superblock during an on-line resize")
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org
Link: https://lore.kernel.org/r/20221117040341.1380702-2-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/resize.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index 5db99cf73ba7..3c1a74ae68b8 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -1476,8 +1476,6 @@ static void ext4_update_super(struct super_block *sb, * active. */ ext4_r_blocks_count_set(es, ext4_r_blocks_count(es) + reserved_blocks); - ext4_superblock_csum_set(sb); - unlock_buffer(sbi->s_sbh); /* Update the free space counts */ percpu_counter_add(&sbi->s_freeclusters_counter, @@ -1513,6 +1511,8 @@ static void ext4_update_super(struct super_block *sb, ext4_calculate_overhead(sb); es->s_overhead_clusters = cpu_to_le32(sbi->s_overhead); + ext4_superblock_csum_set(sb); + unlock_buffer(sbi->s_sbh); if (test_opt(sb, DEBUG)) printk(KERN_DEBUG "EXT4-fs: added group %u:" "%llu blocks(%llu free %llu reserved)\n", flex_gd->count, |