return 0;
}
-/*
- * Release the group or project dquot pointers the user dquots maybe carrying
- * around as a hint, and proceed to purge the user dquot cache if requested.
-*/
-STATIC int
-xfs_qm_dqpurge_hints(
- struct xfs_dquot *dqp,
- void *data)
-{
- struct xfs_dquot *gdqp = NULL;
- struct xfs_dquot *pdqp = NULL;
- uint flags = *((uint *)data);
-
- xfs_dqlock(dqp);
- if (dqp->dq_flags & XFS_DQ_FREEING) {
- xfs_dqunlock(dqp);
- return EAGAIN;
- }
-
- /* If this quota has a hint attached, prepare for releasing it now */
- gdqp = dqp->q_gdquot;
- if (gdqp)
- dqp->q_gdquot = NULL;
-
- pdqp = dqp->q_pdquot;
- if (pdqp)
- dqp->q_pdquot = NULL;
-
- xfs_dqunlock(dqp);
-
- if (gdqp)
- xfs_qm_dqrele(gdqp);
- if (pdqp)
- xfs_qm_dqrele(pdqp);
-
- if (flags & XFS_QMOPT_UQUOTA)
- return xfs_qm_dqpurge(dqp, NULL);
-
- return 0;
-}
-
/*
* Purge the dquot cache.
*/
struct xfs_mount *mp,
uint flags)
{
- /*
- * We have to release group/project dquot hint(s) from the user dquot
- * at first if they are there, otherwise we would run into an infinite
- * loop while walking through radix tree to purge other type of dquots
- * since their refcount is not zero if the user dquot refers to them
- * as hint.
- *
- * Call the special xfs_qm_dqpurge_hints() will end up go through the
- * general xfs_qm_dqpurge() against user dquot cache if requested.
- */
- xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge_hints, &flags);
-
+ if (flags & XFS_QMOPT_UQUOTA)
+ xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge, NULL);
if (flags & XFS_QMOPT_GQUOTA)
xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge, NULL);
if (flags & XFS_QMOPT_PQUOTA)
xfs_dqid_t id,
uint type,
uint doalloc,
- xfs_dquot_t *udqhint, /* hint */
xfs_dquot_t **IO_idqpp)
{
xfs_dquot_t *dqp;
error = 0;
/*
- * See if we already have it in the inode itself. IO_idqpp is
- * &i_udquot or &i_gdquot. This made the code look weird, but
- * made the logic a lot simpler.
+ * See if we already have it in the inode itself. IO_idqpp is &i_udquot
+ * or &i_gdquot. This made the code look weird, but made the logic a lot
+ * simpler.
*/
dqp = *IO_idqpp;
if (dqp) {
}
/*
- * udqhint is the i_udquot field in inode, and is non-NULL only
- * when the type arg is group/project. Its purpose is to save a
- * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside
- * the user dquot.
- */
- if (udqhint) {
- ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ);
- xfs_dqlock(udqhint);
-
- /*
- * No need to take dqlock to look at the id.
- *
- * The ID can't change until it gets reclaimed, and it won't
- * be reclaimed as long as we have a ref from inode and we
- * hold the ilock.
- */
- if (type == XFS_DQ_GROUP)
- dqp = udqhint->q_gdquot;
- else
- dqp = udqhint->q_pdquot;
- if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) {
- ASSERT(*IO_idqpp == NULL);
-
- *IO_idqpp = xfs_qm_dqhold(dqp);
- xfs_dqunlock(udqhint);
- return 0;
- }
-
- /*
- * We can't hold a dquot lock when we call the dqget code.
- * We'll deadlock in no time, because of (not conforming to)
- * lock ordering - the inodelock comes before any dquot lock,
- * and we may drop and reacquire the ilock in xfs_qm_dqget().
- */
- xfs_dqunlock(udqhint);
- }
-
- /*
- * Find the dquot from somewhere. This bumps the
- * reference count of dquot and returns it locked.
- * This can return ENOENT if dquot didn't exist on
- * disk and we didn't ask it to allocate;
- * ESRCH if quotas got turned off suddenly.
+ * Find the dquot from somewhere. This bumps the reference count of
+ * dquot and returns it locked. This can return ENOENT if dquot didn't
+ * exist on disk and we didn't ask it to allocate; ESRCH if quotas got
+ * turned off suddenly.
*/
error = xfs_qm_dqget(ip->i_mount, ip, id, type,
doalloc | XFS_QMOPT_DOWARN, &dqp);
return 0;
}
-
-/*
- * Given a udquot and group/project type, attach the group/project
- * dquot pointer to the udquot as a hint for future lookups.
- */
-STATIC void
-xfs_qm_dqattach_hint(
- struct xfs_inode *ip,
- int type)
-{
- struct xfs_dquot **dqhintp;
- struct xfs_dquot *dqp;
- struct xfs_dquot *udq = ip->i_udquot;
-
- ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ);
-
- xfs_dqlock(udq);
-
- if (type == XFS_DQ_GROUP) {
- dqp = ip->i_gdquot;
- dqhintp = &udq->q_gdquot;
- } else {
- dqp = ip->i_pdquot;
- dqhintp = &udq->q_pdquot;
- }
-
- if (*dqhintp) {
- struct xfs_dquot *tmp;
-
- if (*dqhintp == dqp)
- goto done;
-
- tmp = *dqhintp;
- *dqhintp = NULL;
- xfs_qm_dqrele(tmp);
- }
-
- *dqhintp = xfs_qm_dqhold(dqp);
-done:
- xfs_dqunlock(udq);
-}
-
static bool
xfs_qm_need_dqattach(
struct xfs_inode *ip)
uint flags)
{
xfs_mount_t *mp = ip->i_mount;
- uint nquotas = 0;
int error = 0;
if (!xfs_qm_need_dqattach(ip))
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
- if (XFS_IS_UQUOTA_ON(mp)) {
+ if (XFS_IS_UQUOTA_ON(mp) && !ip->i_udquot) {
error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER,
flags & XFS_QMOPT_DQALLOC,
- NULL, &ip->i_udquot);
+ &ip->i_udquot);
if (error)
goto done;
- nquotas++;
+ ASSERT(ip->i_udquot);
}
- ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
- if (XFS_IS_GQUOTA_ON(mp)) {
+ if (XFS_IS_GQUOTA_ON(mp) && !ip->i_gdquot) {
error = xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP,
flags & XFS_QMOPT_DQALLOC,
- ip->i_udquot, &ip->i_gdquot);
- /*
- * Don't worry about the udquot that we may have
- * attached above. It'll get detached, if not already.
- */
+ &ip->i_gdquot);
if (error)
goto done;
- nquotas++;
+ ASSERT(ip->i_gdquot);
}
- ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
- if (XFS_IS_PQUOTA_ON(mp)) {
+ if (XFS_IS_PQUOTA_ON(mp) && !ip->i_pdquot) {
error = xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ,
flags & XFS_QMOPT_DQALLOC,
- ip->i_udquot, &ip->i_pdquot);
- /*
- * Don't worry about the udquot that we may have
- * attached above. It'll get detached, if not already.
- */
+ &ip->i_pdquot);
if (error)
goto done;
- nquotas++;
+ ASSERT(ip->i_pdquot);
}
+done:
/*
- * Attach this group/project quota to the user quota as a hint.
- * This WON'T, in general, result in a thrash.
+ * Don't worry about the dquots that we may have attached before any
+ * error - they'll get detached later if it has not already been done.
*/
- if (nquotas > 1 && ip->i_udquot) {
- ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
- ASSERT(ip->i_gdquot || !XFS_IS_GQUOTA_ON(mp));
- ASSERT(ip->i_pdquot || !XFS_IS_PQUOTA_ON(mp));
-
- /*
- * We do not have i_udquot locked at this point, but this check
- * is OK since we don't depend on the i_gdquot to be accurate
- * 100% all the time. It is just a hint, and this will
- * succeed in general.
- */
- if (ip->i_udquot->q_gdquot != ip->i_gdquot)
- xfs_qm_dqattach_hint(ip, XFS_DQ_GROUP);
-
- if (ip->i_udquot->q_pdquot != ip->i_pdquot)
- xfs_qm_dqattach_hint(ip, XFS_DQ_PROJ);
- }
-
- done:
-#ifdef DEBUG
- if (!error) {
- if (XFS_IS_UQUOTA_ON(mp))
- ASSERT(ip->i_udquot);
- if (XFS_IS_GQUOTA_ON(mp))
- ASSERT(ip->i_gdquot);
- if (XFS_IS_PQUOTA_ON(mp))
- ASSERT(ip->i_pdquot);
- }
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
-#endif
return error;
}
/* Precalc some constants */
qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB);
- qinf->qi_dqperchunk = xfs_calc_dquots_per_chunk(mp,
- qinf->qi_dqchunklen);
+ qinf->qi_dqperchunk = xfs_calc_dquots_per_chunk(qinf->qi_dqchunklen);
mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD);
projects / karo-tx-linux.git / blobdiff