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xfs: Start using pquotaino from the superblock.

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Start using pquotino and define a macro to check if the
superblock has pquotino.

Keep backward compatibilty by alowing mount of older superblock
with no separate pquota inode.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Chandra Seetharaman 2013-07-19 17:36:02 -05:00 • committed by Ben Myers
parent 0102629776
commit d892d5864f
5 changed files with 158 additions and 43 deletions
Download patch file Download diff file Expand all files Collapse all files

62
fs/xfs/xfs_mount.c
View file

@ -336,14 +336,6 @@ xfs_mount_validate_sb(
return XFS_ERROR(EWRONGFS);
}
if ((sbp->sb_qflags & (XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD)) &&
(sbp->sb_qflags & (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD |
XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD))) {
xfs_notice(mp,
"Super block has XFS_OQUOTA bits along with XFS_PQUOTA and/or XFS_GQUOTA bits.\n");
return XFS_ERROR(EFSCORRUPTED);
}
/*
* Version 5 superblock feature mask validation. Reject combinations the
* kernel cannot support up front before checking anything else. For
@ -387,6 +379,19 @@ xfs_mount_validate_sb(
}
}
if (xfs_sb_version_has_pquotino(sbp)) {
if (sbp->sb_qflags & (XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD)) {
xfs_notice(mp,
"Version 5 of Super block has XFS_OQUOTA bits.\n");
return XFS_ERROR(EFSCORRUPTED);
}
} else if (sbp->sb_qflags & (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD |
XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD)) {
xfs_notice(mp,
"Superblock earlier than Version 5 has XFS_[PQ]UOTA_{ENFD|CHKD} bits.\n");
return XFS_ERROR(EFSCORRUPTED);
}
if (unlikely(
sbp->sb_logstart == 0 && mp->m_logdev_targp == mp->m_ddev_targp)) {
xfs_warn(mp,
@ -590,6 +595,13 @@ xfs_sb_quota_from_disk(struct xfs_sb *sbp)
if (sbp->sb_pquotino == 0)
sbp->sb_pquotino = NULLFSINO;
/*
* We need to do these manipilations only if we are working
* with an older version of on-disk superblock.
*/
if (xfs_sb_version_has_pquotino(sbp))
return;
if (sbp->sb_qflags & XFS_OQUOTA_ENFD)
sbp->sb_qflags |= (sbp->sb_qflags & XFS_PQUOTA_ACCT) ?
XFS_PQUOTA_ENFD : XFS_GQUOTA_ENFD;
@ -597,6 +609,18 @@ xfs_sb_quota_from_disk(struct xfs_sb *sbp)
sbp->sb_qflags |= (sbp->sb_qflags & XFS_PQUOTA_ACCT) ?
XFS_PQUOTA_CHKD : XFS_GQUOTA_CHKD;
sbp->sb_qflags &= ~(XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD);
if (sbp->sb_qflags & XFS_PQUOTA_ACCT) {
/*
* In older version of superblock, on-disk superblock only
* has sb_gquotino, and in-core superblock has both sb_gquotino
* and sb_pquotino. But, only one of them is supported at any
* point of time. So, if PQUOTA is set in disk superblock,
* copy over sb_gquotino to sb_pquotino.
*/
sbp->sb_pquotino = sbp->sb_gquotino;
sbp->sb_gquotino = NULLFSINO;
}
}
void
@ -668,6 +692,13 @@ xfs_sb_quota_to_disk(
{
__uint16_t qflags = from->sb_qflags;
/*
* We need to do these manipilations only if we are working
* with an older version of on-disk superblock.
*/
if (xfs_sb_version_has_pquotino(from))
return;
if (*fields & XFS_SB_QFLAGS) {
/*
* The in-core version of sb_qflags do not have
@ -687,6 +718,21 @@ xfs_sb_quota_to_disk(
to->sb_qflags = cpu_to_be16(qflags);
*fields &= ~XFS_SB_QFLAGS;
}
/*
* GQUOTINO and PQUOTINO cannot be used together in versions
* of superblock that do not have pquotino. from->sb_flags
* tells us which quota is active and should be copied to
* disk.
*/
if ((*fields & XFS_SB_GQUOTINO) &&
(from->sb_qflags & XFS_GQUOTA_ACCT))
to->sb_gquotino = cpu_to_be64(from->sb_gquotino);
else if ((*fields & XFS_SB_PQUOTINO) &&
(from->sb_qflags & XFS_PQUOTA_ACCT))
to->sb_gquotino = cpu_to_be64(from->sb_pquotino);
*fields &= ~(XFS_SB_PQUOTINO | XFS_SB_GQUOTINO);
}
/*