Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/quota/xfs_trans_dquot.c
new file mode 100644
index 0000000..149b2a1
--- /dev/null
+++ b/fs/xfs/quota/xfs_trans_dquot.c
@@ -0,0 +1,941 @@
+/*
+ * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like. Any license provided herein, whether implied or
+ * otherwise, applies only to this software file. Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA 94043, or:
+ *
+ * http://www.sgi.com
+ *
+ * For further information regarding this notice, see:
+ *
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+
+#include "xfs.h"
+#include "xfs_fs.h"
+#include "xfs_inum.h"
+#include "xfs_log.h"
+#include "xfs_trans.h"
+#include "xfs_sb.h"
+#include "xfs_ag.h"
+#include "xfs_dir.h"
+#include "xfs_dir2.h"
+#include "xfs_alloc.h"
+#include "xfs_dmapi.h"
+#include "xfs_quota.h"
+#include "xfs_mount.h"
+#include "xfs_alloc_btree.h"
+#include "xfs_bmap_btree.h"
+#include "xfs_ialloc_btree.h"
+#include "xfs_btree.h"
+#include "xfs_ialloc.h"
+#include "xfs_attr_sf.h"
+#include "xfs_dir_sf.h"
+#include "xfs_dir2_sf.h"
+#include "xfs_dinode.h"
+#include "xfs_inode.h"
+#include "xfs_bmap.h"
+#include "xfs_bit.h"
+#include "xfs_rtalloc.h"
+#include "xfs_error.h"
+#include "xfs_itable.h"
+#include "xfs_rw.h"
+#include "xfs_acl.h"
+#include "xfs_cap.h"
+#include "xfs_mac.h"
+#include "xfs_attr.h"
+#include "xfs_buf_item.h"
+#include "xfs_trans_priv.h"
+
+#include "xfs_qm.h"
+
+STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *);
+
+/*
+ * Add the locked dquot to the transaction.
+ * The dquot must be locked, and it cannot be associated with any
+ * transaction.
+ */
+void
+xfs_trans_dqjoin(
+ xfs_trans_t *tp,
+ xfs_dquot_t *dqp)
+{
+ xfs_dq_logitem_t *lp;
+
+ ASSERT(! XFS_DQ_IS_ADDEDTO_TRX(tp, dqp));
+ ASSERT(XFS_DQ_IS_LOCKED(dqp));
+ ASSERT(XFS_DQ_IS_LOGITEM_INITD(dqp));
+ lp = &dqp->q_logitem;
+
+ /*
+ * Get a log_item_desc to point at the new item.
+ */
+ (void) xfs_trans_add_item(tp, (xfs_log_item_t*)(lp));
+
+ /*
+ * Initialize i_transp so we can later determine if this dquot is
+ * associated with this transaction.
+ */
+ dqp->q_transp = tp;
+}
+
+
+/*
+ * This is called to mark the dquot as needing
+ * to be logged when the transaction is committed. The dquot must
+ * already be associated with the given transaction.
+ * Note that it marks the entire transaction as dirty. In the ordinary
+ * case, this gets called via xfs_trans_commit, after the transaction
+ * is already dirty. However, there's nothing stop this from getting
+ * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY
+ * flag.
+ */
+void
+xfs_trans_log_dquot(
+ xfs_trans_t *tp,
+ xfs_dquot_t *dqp)
+{
+ xfs_log_item_desc_t *lidp;
+
+ ASSERT(XFS_DQ_IS_ADDEDTO_TRX(tp, dqp));
+ ASSERT(XFS_DQ_IS_LOCKED(dqp));
+
+ lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)(&dqp->q_logitem));
+ ASSERT(lidp != NULL);
+
+ tp->t_flags |= XFS_TRANS_DIRTY;
+ lidp->lid_flags |= XFS_LID_DIRTY;
+}
+
+/*
+ * Carry forward whatever is left of the quota blk reservation to
+ * the spanky new transaction
+ */
+STATIC void
+xfs_trans_dup_dqinfo(
+ xfs_trans_t *otp,
+ xfs_trans_t *ntp)
+{
+ xfs_dqtrx_t *oq, *nq;
+ int i,j;
+ xfs_dqtrx_t *oqa, *nqa;
+
+ if (!otp->t_dqinfo)
+ return;
+
+ xfs_trans_alloc_dqinfo(ntp);
+ oqa = otp->t_dqinfo->dqa_usrdquots;
+ nqa = ntp->t_dqinfo->dqa_usrdquots;
+
+ /*
+ * Because the quota blk reservation is carried forward,
+ * it is also necessary to carry forward the DQ_DIRTY flag.
+ */
+ if(otp->t_flags & XFS_TRANS_DQ_DIRTY)
+ ntp->t_flags |= XFS_TRANS_DQ_DIRTY;
+
+ for (j = 0; j < 2; j++) {
+ for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
+ if (oqa[i].qt_dquot == NULL)
+ break;
+ oq = &oqa[i];
+ nq = &nqa[i];
+
+ nq->qt_dquot = oq->qt_dquot;
+ nq->qt_bcount_delta = nq->qt_icount_delta = 0;
+ nq->qt_rtbcount_delta = 0;
+
+ /*
+ * Transfer whatever is left of the reservations.
+ */
+ nq->qt_blk_res = oq->qt_blk_res - oq->qt_blk_res_used;
+ oq->qt_blk_res = oq->qt_blk_res_used;
+
+ nq->qt_rtblk_res = oq->qt_rtblk_res -
+ oq->qt_rtblk_res_used;
+ oq->qt_rtblk_res = oq->qt_rtblk_res_used;
+
+ nq->qt_ino_res = oq->qt_ino_res - oq->qt_ino_res_used;
+ oq->qt_ino_res = oq->qt_ino_res_used;
+
+ }
+ oqa = otp->t_dqinfo->dqa_grpdquots;
+ nqa = ntp->t_dqinfo->dqa_grpdquots;
+ }
+}
+
+/*
+ * Wrap around mod_dquot to account for both user and group quotas.
+ */
+void
+xfs_trans_mod_dquot_byino(
+ xfs_trans_t *tp,
+ xfs_inode_t *ip,
+ uint field,
+ long delta)
+{
+ xfs_mount_t *mp;
+
+ ASSERT(tp);
+ mp = tp->t_mountp;
+
+ if (!XFS_IS_QUOTA_ON(mp) ||
+ ip->i_ino == mp->m_sb.sb_uquotino ||
+ ip->i_ino == mp->m_sb.sb_gquotino)
+ return;
+
+ if (tp->t_dqinfo == NULL)
+ xfs_trans_alloc_dqinfo(tp);
+
+ if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot) {
+ (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta);
+ }
+ if (XFS_IS_GQUOTA_ON(mp) && ip->i_gdquot) {
+ (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta);
+ }
+}
+
+STATIC xfs_dqtrx_t *
+xfs_trans_get_dqtrx(
+ xfs_trans_t *tp,
+ xfs_dquot_t *dqp)
+{
+ int i;
+ xfs_dqtrx_t *qa;
+
+ for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
+ qa = XFS_QM_DQP_TO_DQACCT(tp, dqp);
+
+ if (qa[i].qt_dquot == NULL ||
+ qa[i].qt_dquot == dqp) {
+ return (&qa[i]);
+ }
+ }
+
+ return (NULL);
+}
+
+/*
+ * Make the changes in the transaction structure.
+ * The moral equivalent to xfs_trans_mod_sb().
+ * We don't touch any fields in the dquot, so we don't care
+ * if it's locked or not (most of the time it won't be).
+ */
+void
+xfs_trans_mod_dquot(
+ xfs_trans_t *tp,
+ xfs_dquot_t *dqp,
+ uint field,
+ long delta)
+{
+ xfs_dqtrx_t *qtrx;
+
+ ASSERT(tp);
+ qtrx = NULL;
+
+ if (tp->t_dqinfo == NULL)
+ xfs_trans_alloc_dqinfo(tp);
+ /*
+ * Find either the first free slot or the slot that belongs
+ * to this dquot.
+ */
+ qtrx = xfs_trans_get_dqtrx(tp, dqp);
+ ASSERT(qtrx);
+ if (qtrx->qt_dquot == NULL)
+ qtrx->qt_dquot = dqp;
+
+ switch (field) {
+
+ /*
+ * regular disk blk reservation
+ */
+ case XFS_TRANS_DQ_RES_BLKS:
+ qtrx->qt_blk_res += (ulong)delta;
+ break;
+
+ /*
+ * inode reservation
+ */
+ case XFS_TRANS_DQ_RES_INOS:
+ qtrx->qt_ino_res += (ulong)delta;
+ break;
+
+ /*
+ * disk blocks used.
+ */
+ case XFS_TRANS_DQ_BCOUNT:
+ if (qtrx->qt_blk_res && delta > 0) {
+ qtrx->qt_blk_res_used += (ulong)delta;
+ ASSERT(qtrx->qt_blk_res >= qtrx->qt_blk_res_used);
+ }
+ qtrx->qt_bcount_delta += delta;
+ break;
+
+ case XFS_TRANS_DQ_DELBCOUNT:
+ qtrx->qt_delbcnt_delta += delta;
+ break;
+
+ /*
+ * Inode Count
+ */
+ case XFS_TRANS_DQ_ICOUNT:
+ if (qtrx->qt_ino_res && delta > 0) {
+ qtrx->qt_ino_res_used += (ulong)delta;
+ ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used);
+ }
+ qtrx->qt_icount_delta += delta;
+ break;
+
+ /*
+ * rtblk reservation
+ */
+ case XFS_TRANS_DQ_RES_RTBLKS:
+ qtrx->qt_rtblk_res += (ulong)delta;
+ break;
+
+ /*
+ * rtblk count
+ */
+ case XFS_TRANS_DQ_RTBCOUNT:
+ if (qtrx->qt_rtblk_res && delta > 0) {
+ qtrx->qt_rtblk_res_used += (ulong)delta;
+ ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used);
+ }
+ qtrx->qt_rtbcount_delta += delta;
+ break;
+
+ case XFS_TRANS_DQ_DELRTBCOUNT:
+ qtrx->qt_delrtb_delta += delta;
+ break;
+
+ default:
+ ASSERT(0);
+ }
+ tp->t_flags |= XFS_TRANS_DQ_DIRTY;
+}
+
+
+/*
+ * Given an array of dqtrx structures, lock all the dquots associated
+ * and join them to the transaction, provided they have been modified.
+ * We know that the highest number of dquots (of one type - usr OR grp),
+ * involved in a transaction is 2 and that both usr and grp combined - 3.
+ * So, we don't attempt to make this very generic.
+ */
+STATIC void
+xfs_trans_dqlockedjoin(
+ xfs_trans_t *tp,
+ xfs_dqtrx_t *q)
+{
+ ASSERT(q[0].qt_dquot != NULL);
+ if (q[1].qt_dquot == NULL) {
+ xfs_dqlock(q[0].qt_dquot);
+ xfs_trans_dqjoin(tp, q[0].qt_dquot);
+ } else {
+ ASSERT(XFS_QM_TRANS_MAXDQS == 2);
+ xfs_dqlock2(q[0].qt_dquot, q[1].qt_dquot);
+ xfs_trans_dqjoin(tp, q[0].qt_dquot);
+ xfs_trans_dqjoin(tp, q[1].qt_dquot);
+ }
+}
+
+
+/*
+ * Called by xfs_trans_commit() and similar in spirit to
+ * xfs_trans_apply_sb_deltas().
+ * Go thru all the dquots belonging to this transaction and modify the
+ * INCORE dquot to reflect the actual usages.
+ * Unreserve just the reservations done by this transaction.
+ * dquot is still left locked at exit.
+ */
+void
+xfs_trans_apply_dquot_deltas(
+ xfs_trans_t *tp)
+{
+ int i, j;
+ xfs_dquot_t *dqp;
+ xfs_dqtrx_t *qtrx, *qa;
+ xfs_disk_dquot_t *d;
+ long totalbdelta;
+ long totalrtbdelta;
+
+ if (! (tp->t_flags & XFS_TRANS_DQ_DIRTY))
+ return;
+
+ ASSERT(tp->t_dqinfo);
+ qa = tp->t_dqinfo->dqa_usrdquots;
+ for (j = 0; j < 2; j++) {
+ if (qa[0].qt_dquot == NULL) {
+ qa = tp->t_dqinfo->dqa_grpdquots;
+ continue;
+ }
+
+ /*
+ * Lock all of the dquots and join them to the transaction.
+ */
+ xfs_trans_dqlockedjoin(tp, qa);
+
+ for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
+ qtrx = &qa[i];
+ /*
+ * The array of dquots is filled
+ * sequentially, not sparsely.
+ */
+ if ((dqp = qtrx->qt_dquot) == NULL)
+ break;
+
+ ASSERT(XFS_DQ_IS_LOCKED(dqp));
+ ASSERT(XFS_DQ_IS_ADDEDTO_TRX(tp, dqp));
+
+ /*
+ * adjust the actual number of blocks used
+ */
+ d = &dqp->q_core;
+
+ /*
+ * The issue here is - sometimes we don't make a blkquota
+ * reservation intentionally to be fair to users
+ * (when the amount is small). On the other hand,
+ * delayed allocs do make reservations, but that's
+ * outside of a transaction, so we have no
+ * idea how much was really reserved.
+ * So, here we've accumulated delayed allocation blks and
+ * non-delay blks. The assumption is that the
+ * delayed ones are always reserved (outside of a
+ * transaction), and the others may or may not have
+ * quota reservations.
+ */
+ totalbdelta = qtrx->qt_bcount_delta +
+ qtrx->qt_delbcnt_delta;
+ totalrtbdelta = qtrx->qt_rtbcount_delta +
+ qtrx->qt_delrtb_delta;
+#ifdef QUOTADEBUG
+ if (totalbdelta < 0)
+ ASSERT(INT_GET(d->d_bcount, ARCH_CONVERT) >=
+ (xfs_qcnt_t) -totalbdelta);
+
+ if (totalrtbdelta < 0)
+ ASSERT(INT_GET(d->d_rtbcount, ARCH_CONVERT) >=
+ (xfs_qcnt_t) -totalrtbdelta);
+
+ if (qtrx->qt_icount_delta < 0)
+ ASSERT(INT_GET(d->d_icount, ARCH_CONVERT) >=
+ (xfs_qcnt_t) -qtrx->qt_icount_delta);
+#endif
+ if (totalbdelta)
+ INT_MOD(d->d_bcount, ARCH_CONVERT, (xfs_qcnt_t)totalbdelta);
+
+ if (qtrx->qt_icount_delta)
+ INT_MOD(d->d_icount, ARCH_CONVERT, (xfs_qcnt_t)qtrx->qt_icount_delta);
+
+ if (totalrtbdelta)
+ INT_MOD(d->d_rtbcount, ARCH_CONVERT, (xfs_qcnt_t)totalrtbdelta);
+
+ /*
+ * Get any default limits in use.
+ * Start/reset the timer(s) if needed.
+ */
+ if (d->d_id) {
+ xfs_qm_adjust_dqlimits(tp->t_mountp, d);
+ xfs_qm_adjust_dqtimers(tp->t_mountp, d);
+ }
+
+ dqp->dq_flags |= XFS_DQ_DIRTY;
+ /*
+ * add this to the list of items to get logged
+ */
+ xfs_trans_log_dquot(tp, dqp);
+ /*
+ * Take off what's left of the original reservation.
+ * In case of delayed allocations, there's no
+ * reservation that a transaction structure knows of.
+ */
+ if (qtrx->qt_blk_res != 0) {
+ if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) {
+ if (qtrx->qt_blk_res >
+ qtrx->qt_blk_res_used)
+ dqp->q_res_bcount -= (xfs_qcnt_t)
+ (qtrx->qt_blk_res -
+ qtrx->qt_blk_res_used);
+ else
+ dqp->q_res_bcount -= (xfs_qcnt_t)
+ (qtrx->qt_blk_res_used -
+ qtrx->qt_blk_res);
+ }
+ } else {
+ /*
+ * These blks were never reserved, either inside
+ * a transaction or outside one (in a delayed
+ * allocation). Also, this isn't always a
+ * negative number since we sometimes
+ * deliberately skip quota reservations.
+ */
+ if (qtrx->qt_bcount_delta) {
+ dqp->q_res_bcount +=
+ (xfs_qcnt_t)qtrx->qt_bcount_delta;
+ }
+ }
+ /*
+ * Adjust the RT reservation.
+ */
+ if (qtrx->qt_rtblk_res != 0) {
+ if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) {
+ if (qtrx->qt_rtblk_res >
+ qtrx->qt_rtblk_res_used)
+ dqp->q_res_rtbcount -= (xfs_qcnt_t)
+ (qtrx->qt_rtblk_res -
+ qtrx->qt_rtblk_res_used);
+ else
+ dqp->q_res_rtbcount -= (xfs_qcnt_t)
+ (qtrx->qt_rtblk_res_used -
+ qtrx->qt_rtblk_res);
+ }
+ } else {
+ if (qtrx->qt_rtbcount_delta)
+ dqp->q_res_rtbcount +=
+ (xfs_qcnt_t)qtrx->qt_rtbcount_delta;
+ }
+
+ /*
+ * Adjust the inode reservation.
+ */
+ if (qtrx->qt_ino_res != 0) {
+ ASSERT(qtrx->qt_ino_res >=
+ qtrx->qt_ino_res_used);
+ if (qtrx->qt_ino_res > qtrx->qt_ino_res_used)
+ dqp->q_res_icount -= (xfs_qcnt_t)
+ (qtrx->qt_ino_res -
+ qtrx->qt_ino_res_used);
+ } else {
+ if (qtrx->qt_icount_delta)
+ dqp->q_res_icount +=
+ (xfs_qcnt_t)qtrx->qt_icount_delta;
+ }
+
+
+#ifdef QUOTADEBUG
+ if (qtrx->qt_rtblk_res != 0)
+ cmn_err(CE_DEBUG, "RT res %d for 0x%p\n",
+ (int) qtrx->qt_rtblk_res, dqp);
+#endif
+ ASSERT(dqp->q_res_bcount >=
+ INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT));
+ ASSERT(dqp->q_res_icount >=
+ INT_GET(dqp->q_core.d_icount, ARCH_CONVERT));
+ ASSERT(dqp->q_res_rtbcount >=
+ INT_GET(dqp->q_core.d_rtbcount, ARCH_CONVERT));
+ }
+ /*
+ * Do the group quotas next
+ */
+ qa = tp->t_dqinfo->dqa_grpdquots;
+ }
+}
+
+/*
+ * Release the reservations, and adjust the dquots accordingly.
+ * This is called only when the transaction is being aborted. If by
+ * any chance we have done dquot modifications incore (ie. deltas) already,
+ * we simply throw those away, since that's the expected behavior
+ * when a transaction is curtailed without a commit.
+ */
+STATIC void
+xfs_trans_unreserve_and_mod_dquots(
+ xfs_trans_t *tp)
+{
+ int i, j;
+ xfs_dquot_t *dqp;
+ xfs_dqtrx_t *qtrx, *qa;
+ boolean_t locked;
+
+ if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY))
+ return;
+
+ qa = tp->t_dqinfo->dqa_usrdquots;
+
+ for (j = 0; j < 2; j++) {
+ for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
+ qtrx = &qa[i];
+ /*
+ * We assume that the array of dquots is filled
+ * sequentially, not sparsely.
+ */
+ if ((dqp = qtrx->qt_dquot) == NULL)
+ break;
+ /*
+ * Unreserve the original reservation. We don't care
+ * about the number of blocks used field, or deltas.
+ * Also we don't bother to zero the fields.
+ */
+ locked = B_FALSE;
+ if (qtrx->qt_blk_res) {
+ xfs_dqlock(dqp);
+ locked = B_TRUE;
+ dqp->q_res_bcount -=
+ (xfs_qcnt_t)qtrx->qt_blk_res;
+ }
+ if (qtrx->qt_ino_res) {
+ if (!locked) {
+ xfs_dqlock(dqp);
+ locked = B_TRUE;
+ }
+ dqp->q_res_icount -=
+ (xfs_qcnt_t)qtrx->qt_ino_res;
+ }
+
+ if (qtrx->qt_rtblk_res) {
+ if (!locked) {
+ xfs_dqlock(dqp);
+ locked = B_TRUE;
+ }
+ dqp->q_res_rtbcount -=
+ (xfs_qcnt_t)qtrx->qt_rtblk_res;
+ }
+ if (locked)
+ xfs_dqunlock(dqp);
+
+ }
+ qa = tp->t_dqinfo->dqa_grpdquots;
+ }
+}
+
+/*
+ * This reserves disk blocks and inodes against a dquot.
+ * Flags indicate if the dquot is to be locked here and also
+ * if the blk reservation is for RT or regular blocks.
+ * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check.
+ * Returns EDQUOT if quota is exceeded.
+ */
+STATIC int
+xfs_trans_dqresv(
+ xfs_trans_t *tp,
+ xfs_mount_t *mp,
+ xfs_dquot_t *dqp,
+ long nblks,
+ long ninos,
+ uint flags)
+{
+ int error;
+ xfs_qcnt_t hardlimit;
+ xfs_qcnt_t softlimit;
+ time_t btimer;
+ xfs_qcnt_t *resbcountp;
+ xfs_quotainfo_t *q = mp->m_quotainfo;
+
+ if (! (flags & XFS_QMOPT_DQLOCK)) {
+ xfs_dqlock(dqp);
+ }
+ ASSERT(XFS_DQ_IS_LOCKED(dqp));
+ if (flags & XFS_TRANS_DQ_RES_BLKS) {
+ hardlimit = INT_GET(dqp->q_core.d_blk_hardlimit, ARCH_CONVERT);
+ if (!hardlimit)
+ hardlimit = q->qi_bhardlimit;
+ softlimit = INT_GET(dqp->q_core.d_blk_softlimit, ARCH_CONVERT);
+ if (!softlimit)
+ softlimit = q->qi_bsoftlimit;
+ btimer = INT_GET(dqp->q_core.d_btimer, ARCH_CONVERT);
+ resbcountp = &dqp->q_res_bcount;
+ } else {
+ ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS);
+ hardlimit = INT_GET(dqp->q_core.d_rtb_hardlimit, ARCH_CONVERT);
+ if (!hardlimit)
+ hardlimit = q->qi_rtbhardlimit;
+ softlimit = INT_GET(dqp->q_core.d_rtb_softlimit, ARCH_CONVERT);
+ if (!softlimit)
+ softlimit = q->qi_rtbsoftlimit;
+ btimer = INT_GET(dqp->q_core.d_rtbtimer, ARCH_CONVERT);
+ resbcountp = &dqp->q_res_rtbcount;
+ }
+ error = 0;
+
+ if ((flags & XFS_QMOPT_FORCE_RES) == 0 &&
+ dqp->q_core.d_id &&
+ XFS_IS_QUOTA_ENFORCED(dqp->q_mount)) {
+#ifdef QUOTADEBUG
+ cmn_err(CE_DEBUG, "BLK Res: nblks=%ld + resbcount=%Ld"
+ " > hardlimit=%Ld?", nblks, *resbcountp, hardlimit);
+#endif
+ if (nblks > 0) {
+ /*
+ * dquot is locked already. See if we'd go over the
+ * hardlimit or exceed the timelimit if we allocate
+ * nblks.
+ */
+ if (hardlimit > 0ULL &&
+ (hardlimit <= nblks + *resbcountp)) {
+ error = EDQUOT;
+ goto error_return;
+ }
+
+ if (softlimit > 0ULL &&
+ (softlimit <= nblks + *resbcountp)) {
+ /*
+ * If timer or warnings has expired,
+ * return EDQUOT
+ */
+ if ((btimer != 0 && get_seconds() > btimer) ||
+ (dqp->q_core.d_bwarns &&
+ INT_GET(dqp->q_core.d_bwarns, ARCH_CONVERT) >=
+ XFS_QI_BWARNLIMIT(dqp->q_mount))) {
+ error = EDQUOT;
+ goto error_return;
+ }
+ }
+ }
+ if (ninos > 0) {
+ hardlimit = INT_GET(dqp->q_core.d_ino_hardlimit, ARCH_CONVERT);
+ if (!hardlimit)
+ hardlimit = q->qi_ihardlimit;
+ softlimit = INT_GET(dqp->q_core.d_ino_softlimit, ARCH_CONVERT);
+ if (!softlimit)
+ softlimit = q->qi_isoftlimit;
+ if (hardlimit > 0ULL &&
+ INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) >= hardlimit) {
+ error = EDQUOT;
+ goto error_return;
+ } else if (softlimit > 0ULL &&
+ INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) >= softlimit) {
+ /*
+ * If timer or warnings has expired,
+ * return EDQUOT
+ */
+ if ((dqp->q_core.d_itimer &&
+ get_seconds() > INT_GET(dqp->q_core.d_itimer, ARCH_CONVERT)) ||
+ (dqp->q_core.d_iwarns &&
+ INT_GET(dqp->q_core.d_iwarns, ARCH_CONVERT) >=
+ XFS_QI_IWARNLIMIT(dqp->q_mount))) {
+ error = EDQUOT;
+ goto error_return;
+ }
+ }
+ }
+ }
+
+ /*
+ * Change the reservation, but not the actual usage.
+ * Note that q_res_bcount = q_core.d_bcount + resv
+ */
+ (*resbcountp) += (xfs_qcnt_t)nblks;
+ if (ninos != 0)
+ dqp->q_res_icount += (xfs_qcnt_t)ninos;
+
+ /*
+ * note the reservation amt in the trans struct too,
+ * so that the transaction knows how much was reserved by
+ * it against this particular dquot.
+ * We don't do this when we are reserving for a delayed allocation,
+ * because we don't have the luxury of a transaction envelope then.
+ */
+ if (tp) {
+ ASSERT(tp->t_dqinfo);
+ ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
+ if (nblks != 0)
+ xfs_trans_mod_dquot(tp, dqp,
+ flags & XFS_QMOPT_RESBLK_MASK,
+ nblks);
+ if (ninos != 0)
+ xfs_trans_mod_dquot(tp, dqp,
+ XFS_TRANS_DQ_RES_INOS,
+ ninos);
+ }
+ ASSERT(dqp->q_res_bcount >= INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT));
+ ASSERT(dqp->q_res_rtbcount >= INT_GET(dqp->q_core.d_rtbcount, ARCH_CONVERT));
+ ASSERT(dqp->q_res_icount >= INT_GET(dqp->q_core.d_icount, ARCH_CONVERT));
+
+error_return:
+ if (! (flags & XFS_QMOPT_DQLOCK)) {
+ xfs_dqunlock(dqp);
+ }
+ return (error);
+}
+
+
+/*
+ * Given a dquot(s), make disk block and/or inode reservations against them.
+ * The fact that this does the reservation against both the usr and
+ * grp quotas is important, because this follows a both-or-nothing
+ * approach.
+ *
+ * flags = XFS_QMOPT_DQLOCK indicate if dquot(s) need to be locked.
+ * XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown.
+ * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks
+ * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks
+ * dquots are unlocked on return, if they were not locked by caller.
+ */
+int
+xfs_trans_reserve_quota_bydquots(
+ xfs_trans_t *tp,
+ xfs_mount_t *mp,
+ xfs_dquot_t *udqp,
+ xfs_dquot_t *gdqp,
+ long nblks,
+ long ninos,
+ uint flags)
+{
+ int resvd;
+
+ if (! XFS_IS_QUOTA_ON(mp))
+ return (0);
+
+ if (tp && tp->t_dqinfo == NULL)
+ xfs_trans_alloc_dqinfo(tp);
+
+ ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
+ resvd = 0;
+
+ if (udqp) {
+ if (xfs_trans_dqresv(tp, mp, udqp, nblks, ninos, flags))
+ return (EDQUOT);
+ resvd = 1;
+ }
+
+ if (gdqp) {
+ if (xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags)) {
+ /*
+ * can't do it, so backout previous reservation
+ */
+ if (resvd) {
+ flags |= XFS_QMOPT_FORCE_RES;
+ xfs_trans_dqresv(tp, mp, udqp,
+ -nblks, -ninos, flags);
+ }
+ return (EDQUOT);
+ }
+ }
+
+ /*
+ * Didnt change anything critical, so, no need to log
+ */
+ return (0);
+}
+
+
+/*
+ * Lock the dquot and change the reservation if we can.
+ * This doesn't change the actual usage, just the reservation.
+ * The inode sent in is locked.
+ *
+ * Returns 0 on success, EDQUOT or other errors otherwise
+ */
+STATIC int
+xfs_trans_reserve_quota_nblks(
+ xfs_trans_t *tp,
+ xfs_mount_t *mp,
+ xfs_inode_t *ip,
+ long nblks,
+ long ninos,
+ uint type)
+{
+ int error;
+
+ if (!XFS_IS_QUOTA_ON(mp))
+ return (0);
+
+ ASSERT(ip->i_ino != mp->m_sb.sb_uquotino);
+ ASSERT(ip->i_ino != mp->m_sb.sb_gquotino);
+
+ ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
+ ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount));
+ ASSERT((type & ~XFS_QMOPT_FORCE_RES) == XFS_TRANS_DQ_RES_RTBLKS ||
+ (type & ~XFS_QMOPT_FORCE_RES) == XFS_TRANS_DQ_RES_BLKS);
+
+ /*
+ * Reserve nblks against these dquots, with trans as the mediator.
+ */
+ error = xfs_trans_reserve_quota_bydquots(tp, mp,
+ ip->i_udquot, ip->i_gdquot,
+ nblks, ninos,
+ type);
+ return (error);
+}
+
+/*
+ * This routine is called to allocate a quotaoff log item.
+ */
+xfs_qoff_logitem_t *
+xfs_trans_get_qoff_item(
+ xfs_trans_t *tp,
+ xfs_qoff_logitem_t *startqoff,
+ uint flags)
+{
+ xfs_qoff_logitem_t *q;
+
+ ASSERT(tp != NULL);
+
+ q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags);
+ ASSERT(q != NULL);
+
+ /*
+ * Get a log_item_desc to point at the new item.
+ */
+ (void) xfs_trans_add_item(tp, (xfs_log_item_t*)q);
+
+ return (q);
+}
+
+
+/*
+ * This is called to mark the quotaoff logitem as needing
+ * to be logged when the transaction is committed. The logitem must
+ * already be associated with the given transaction.
+ */
+void
+xfs_trans_log_quotaoff_item(
+ xfs_trans_t *tp,
+ xfs_qoff_logitem_t *qlp)
+{
+ xfs_log_item_desc_t *lidp;
+
+ lidp = xfs_trans_find_item(tp, (xfs_log_item_t *)qlp);
+ ASSERT(lidp != NULL);
+
+ tp->t_flags |= XFS_TRANS_DIRTY;
+ lidp->lid_flags |= XFS_LID_DIRTY;
+}
+
+STATIC void
+xfs_trans_alloc_dqinfo(
+ xfs_trans_t *tp)
+{
+ (tp)->t_dqinfo = kmem_zone_zalloc(xfs_Gqm->qm_dqtrxzone, KM_SLEEP);
+}
+
+STATIC void
+xfs_trans_free_dqinfo(
+ xfs_trans_t *tp)
+{
+ if (!tp->t_dqinfo)
+ return;
+ kmem_zone_free(xfs_Gqm->qm_dqtrxzone, (tp)->t_dqinfo);
+ (tp)->t_dqinfo = NULL;
+}
+
+xfs_dqtrxops_t xfs_trans_dquot_ops = {
+ .qo_dup_dqinfo = xfs_trans_dup_dqinfo,
+ .qo_free_dqinfo = xfs_trans_free_dqinfo,
+ .qo_mod_dquot_byino = xfs_trans_mod_dquot_byino,
+ .qo_apply_dquot_deltas = xfs_trans_apply_dquot_deltas,
+ .qo_reserve_quota_nblks = xfs_trans_reserve_quota_nblks,
+ .qo_reserve_quota_bydquots = xfs_trans_reserve_quota_bydquots,
+ .qo_unreserve_and_mod_dquots = xfs_trans_unreserve_and_mod_dquots,
+};