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xfs: fix superblock inprogress check

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From inspection, the superblock sb_inprogress check is done in the
verifier and triggered only for the primary superblock via a
"bp->b_bn == XFS_SB_DADDR" check.

Unfortunately, the primary superblock is an uncached buffer, and
hence it is configured by xfs_buf_read_uncached() with:

	bp->b_bn = XFS_BUF_DADDR_NULL;  /* always null for uncached buffers */

And so this check never triggers. Fix it.

cc: <stable@vger.kernel.org>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Dave Chinner 2016-08-26 16:01:30 +10:00 committed by Dave Chinner
parent 5b5c2dbd3c
commit f3d7ebdeb2
1 changed files with 2 additions and 1 deletions
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3
fs/xfs/libxfs/xfs_sb.c
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@ -583,7 +583,8 @@ xfs_sb_verify(
* Only check the in progress field for the primary superblock as
* mkfs.xfs doesn't clear it from secondary superblocks.
*/
return xfs_mount_validate_sb(mp, &sb, bp->b_bn == XFS_SB_DADDR,
return xfs_mount_validate_sb(mp, &sb,
bp->b_maps[0].bm_bn == XFS_SB_DADDR,
check_version);
}