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Commit 5ef828c4 authored by Eric Sandeen's avatar Eric Sandeen Committed by Dave Chinner
Browse files

xfs: avoid false quotacheck after unclean shutdown 



The commit

83e782e1 xfs: Remove incore use of XFS_OQUOTA_ENFD and XFS_OQUOTA_CHKD

added a new function xfs_sb_quota_from_disk() which swaps
on-disk XFS_OQUOTA_* flags for in-core XFS_GQUOTA_* and XFS_PQUOTA_*
flags after the superblock is read.

However, if log recovery is required, the superblock is read again,
and the modified in-core flags are re-read from disk, so we have
XFS_OQUOTA_* flags in memory again.  This causes the
XFS_QM_NEED_QUOTACHECK() test to be true, because the XFS_OQUOTA_CHKD
is still set, and not XFS_GQUOTA_CHKD or XFS_PQUOTA_CHKD.

Change xfs_sb_from_disk to call xfs_sb_quota_from disk and always
convert the disk flags to in-memory flags.

Add a lower-level function which can be called with "false" to
not convert the flags, so that the sb verifier can verify
exactly what was on disk, per Brian Foster's suggestion.

Reported-by: default avatarCyril B. <cbay@excellency.fr>
Signed-off-by: default avatarEric Sandeen <sandeen@redhat.com>
parent eedf32bf

fs/xfs/libxfs/xfs_sb.c

+20 −4
Original line number Diff line number Diff line
@@ -386,10 +386,11 @@ xfs_sb_quota_from_disk(struct xfs_sb *sbp) 
	}

}



void

xfs_sb_from_disk(

static void

__xfs_sb_from_disk(

	struct xfs_sb	*to,

	xfs_dsb_t	*from)

	xfs_dsb_t	*from,

	bool		convert_xquota)

{

	to->sb_magicnum = be32_to_cpu(from->sb_magicnum);

	to->sb_blocksize = be32_to_cpu(from->sb_blocksize);
@@ -445,6 +446,17 @@ xfs_sb_from_disk( 
	to->sb_pad = 0;

	to->sb_pquotino = be64_to_cpu(from->sb_pquotino);

	to->sb_lsn = be64_to_cpu(from->sb_lsn);

	/* Convert on-disk flags to in-memory flags? */

	if (convert_xquota)

		xfs_sb_quota_from_disk(to);

}



void

xfs_sb_from_disk(

	struct xfs_sb	*to,

	xfs_dsb_t	*from)

{

	__xfs_sb_from_disk(to, from, true);

}



static inline void
@@ -560,7 +572,11 @@ xfs_sb_verify( 
	struct xfs_mount *mp = bp->b_target->bt_mount;

	struct xfs_sb	sb;



	xfs_sb_from_disk(&sb, XFS_BUF_TO_SBP(bp));

	/*

	 * Use call variant which doesn't convert quota flags from disk 

	 * format, because xfs_mount_validate_sb checks the on-disk flags.

	 */

	__xfs_sb_from_disk(&sb, XFS_BUF_TO_SBP(bp), false);



	/*

	 * Only check the in progress field for the primary superblock as

fs/xfs/xfs_mount.c

+0 −1
Original line number Diff line number Diff line
@@ -324,7 +324,6 @@ reread: 
	 * Initialize the mount structure from the superblock.

	 */

	xfs_sb_from_disk(sbp, XFS_BUF_TO_SBP(bp));

	xfs_sb_quota_from_disk(sbp);



	/*

	 * If we haven't validated the superblock, do so now before we try