Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 715 insertions, 0 deletions

diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/quota/xfs_dquot_item.c
new file mode 100644
index 000000000000..a5425ee6e7bd
--- /dev/null
+++ b/fs/xfs/quota/xfs_dquot_item.c
@@ -0,0 +1,715 @@
+/*
+ * Copyright (c) 2000-2003 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"
+
+
+/*
+ * returns the number of iovecs needed to log the given dquot item.
+ */
+/* ARGSUSED */
+STATIC uint
+xfs_qm_dquot_logitem_size(
+        xfs_dq_logitem_t        *logitem)
+{
+        /*
+         * we need only two iovecs, one for the format, one for the real thing
+         */
+        return (2);
+}
+
+/*
+ * fills in the vector of log iovecs for the given dquot log item.
+ */
+STATIC void
+xfs_qm_dquot_logitem_format(
+        xfs_dq_logitem_t        *logitem,
+        xfs_log_iovec_t         *logvec)
+{
+        ASSERT(logitem);
+        ASSERT(logitem->qli_dquot);
+
+        logvec->i_addr = (xfs_caddr_t)&logitem->qli_format;
+        logvec->i_len  = sizeof(xfs_dq_logformat_t);
+        logvec++;
+        logvec->i_addr = (xfs_caddr_t)&logitem->qli_dquot->q_core;
+        logvec->i_len  = sizeof(xfs_disk_dquot_t);
+
+        ASSERT(2 == logitem->qli_item.li_desc->lid_size);
+        logitem->qli_format.qlf_size = 2;
+
+}
+
+/*
+ * Increment the pin count of the given dquot.
+ * This value is protected by pinlock spinlock in the xQM structure.
+ */
+STATIC void
+xfs_qm_dquot_logitem_pin(
+        xfs_dq_logitem_t *logitem)
+{
+        unsigned long   s;
+        xfs_dquot_t *dqp;
+
+        dqp = logitem->qli_dquot;
+        ASSERT(XFS_DQ_IS_LOCKED(dqp));
+        s = XFS_DQ_PINLOCK(dqp);
+        dqp->q_pincount++;
+        XFS_DQ_PINUNLOCK(dqp, s);
+}
+
+/*
+ * Decrement the pin count of the given dquot, and wake up
+ * anyone in xfs_dqwait_unpin() if the count goes to 0.  The
+ * dquot must have been previously pinned with a call to xfs_dqpin().
+ */
+/* ARGSUSED */
+STATIC void
+xfs_qm_dquot_logitem_unpin(
+        xfs_dq_logitem_t *logitem,
+        int               stale)
+{
+        unsigned long   s;
+        xfs_dquot_t *dqp;
+
+        dqp = logitem->qli_dquot;
+        ASSERT(dqp->q_pincount > 0);
+        s = XFS_DQ_PINLOCK(dqp);
+        dqp->q_pincount--;
+        if (dqp->q_pincount == 0) {
+                sv_broadcast(&dqp->q_pinwait);
+        }
+        XFS_DQ_PINUNLOCK(dqp, s);
+}
+
+/* ARGSUSED */
+STATIC void
+xfs_qm_dquot_logitem_unpin_remove(
+        xfs_dq_logitem_t *logitem,
+        xfs_trans_t      *tp)
+{
+        xfs_qm_dquot_logitem_unpin(logitem, 0);
+}
+
+/*
+ * Given the logitem, this writes the corresponding dquot entry to disk
+ * asynchronously. This is called with the dquot entry securely locked;
+ * we simply get xfs_qm_dqflush() to do the work, and unlock the dquot
+ * at the end.
+ */
+STATIC void
+xfs_qm_dquot_logitem_push(
+        xfs_dq_logitem_t        *logitem)
+{
+        xfs_dquot_t     *dqp;
+
+        dqp = logitem->qli_dquot;
+
+        ASSERT(XFS_DQ_IS_LOCKED(dqp));
+        ASSERT(XFS_DQ_IS_FLUSH_LOCKED(dqp));
+
+        /*
+         * Since we were able to lock the dquot's flush lock and
+         * we found it on the AIL, the dquot must be dirty.  This
+         * is because the dquot is removed from the AIL while still
+         * holding the flush lock in xfs_dqflush_done().  Thus, if
+         * we found it in the AIL and were able to obtain the flush
+         * lock without sleeping, then there must not have been
+         * anyone in the process of flushing the dquot.
+         */
+        xfs_qm_dqflush(dqp, XFS_B_DELWRI);
+        xfs_dqunlock(dqp);
+}
+
+/*ARGSUSED*/
+STATIC xfs_lsn_t
+xfs_qm_dquot_logitem_committed(
+        xfs_dq_logitem_t        *l,
+        xfs_lsn_t               lsn)
+{
+        /*
+         * We always re-log the entire dquot when it becomes dirty,
+         * so, the latest copy _is_ the only one that matters.
+         */
+        return (lsn);
+}
+
+
+/*
+ * This is called to wait for the given dquot to be unpinned.
+ * Most of these pin/unpin routines are plagiarized from inode code.
+ */
+void
+xfs_qm_dqunpin_wait(
+        xfs_dquot_t     *dqp)
+{
+        SPLDECL(s);
+
+        ASSERT(XFS_DQ_IS_LOCKED(dqp));
+        if (dqp->q_pincount == 0) {
+                return;
+        }
+
+        /*
+         * Give the log a push so we don't wait here too long.
+         */
+        xfs_log_force(dqp->q_mount, (xfs_lsn_t)0, XFS_LOG_FORCE);
+        s = XFS_DQ_PINLOCK(dqp);
+        if (dqp->q_pincount == 0) {
+                XFS_DQ_PINUNLOCK(dqp, s);
+                return;
+        }
+        sv_wait(&(dqp->q_pinwait), PINOD,
+                &(XFS_DQ_TO_QINF(dqp)->qi_pinlock), s);
+}
+
+/*
+ * This is called when IOP_TRYLOCK returns XFS_ITEM_PUSHBUF to indicate that
+ * the dquot is locked by us, but the flush lock isn't. So, here we are
+ * going to see if the relevant dquot buffer is incore, waiting on DELWRI.
+ * If so, we want to push it out to help us take this item off the AIL as soon
+ * as possible.
+ *
+ * We must not be holding the AIL_LOCK at this point. Calling incore() to
+ * search the buffercache can be a time consuming thing, and AIL_LOCK is a
+ * spinlock.
+ */
+STATIC void
+xfs_qm_dquot_logitem_pushbuf(
+        xfs_dq_logitem_t    *qip)
+{
+        xfs_dquot_t     *dqp;
+        xfs_mount_t     *mp;
+        xfs_buf_t       *bp;
+        uint            dopush;
+
+        dqp = qip->qli_dquot;
+        ASSERT(XFS_DQ_IS_LOCKED(dqp));
+
+        /*
+         * The qli_pushbuf_flag keeps others from
+         * trying to duplicate our effort.
+         */
+        ASSERT(qip->qli_pushbuf_flag != 0);
+        ASSERT(qip->qli_push_owner == get_thread_id());
+
+        /*
+         * If flushlock isn't locked anymore, chances are that the
+         * inode flush completed and the inode was taken off the AIL.
+         * So, just get out.
+         */
+        if ((valusema(&(dqp->q_flock)) > 0)  ||
+            ((qip->qli_item.li_flags & XFS_LI_IN_AIL) == 0)) {
+                qip->qli_pushbuf_flag = 0;
+                xfs_dqunlock(dqp);
+                return;
+        }
+        mp = dqp->q_mount;
+        bp = xfs_incore(mp->m_ddev_targp, qip->qli_format.qlf_blkno,
+                    XFS_QI_DQCHUNKLEN(mp),
+                    XFS_INCORE_TRYLOCK);
+        if (bp != NULL) {
+                if (XFS_BUF_ISDELAYWRITE(bp)) {
+                        dopush = ((qip->qli_item.li_flags & XFS_LI_IN_AIL) &&
+                                  (valusema(&(dqp->q_flock)) <= 0));
+                        qip->qli_pushbuf_flag = 0;
+                        xfs_dqunlock(dqp);
+
+                        if (XFS_BUF_ISPINNED(bp)) {
+                                xfs_log_force(mp, (xfs_lsn_t)0,
+                                              XFS_LOG_FORCE);
+                        }
+                        if (dopush) {
+#ifdef XFSRACEDEBUG
+                                delay_for_intr();
+                                delay(300);
+#endif
+                                xfs_bawrite(mp, bp);
+                        } else {
+                                xfs_buf_relse(bp);
+                        }
+                } else {
+                        qip->qli_pushbuf_flag = 0;
+                        xfs_dqunlock(dqp);
+                        xfs_buf_relse(bp);
+                }
+                return;
+        }
+
+        qip->qli_pushbuf_flag = 0;
+        xfs_dqunlock(dqp);
+}
+
+/*
+ * This is called to attempt to lock the dquot associated with this
+ * dquot log item.  Don't sleep on the dquot lock or the flush lock.
+ * If the flush lock is already held, indicating that the dquot has
+ * been or is in the process of being flushed, then see if we can
+ * find the dquot's buffer in the buffer cache without sleeping.  If
+ * we can and it is marked delayed write, then we want to send it out.
+ * We delay doing so until the push routine, though, to avoid sleeping
+ * in any device strategy routines.
+ */
+STATIC uint
+xfs_qm_dquot_logitem_trylock(
+        xfs_dq_logitem_t        *qip)
+{
+        xfs_dquot_t             *dqp;
+        uint                    retval;
+
+        dqp = qip->qli_dquot;
+        if (dqp->q_pincount > 0)
+                return (XFS_ITEM_PINNED);
+
+        if (! xfs_qm_dqlock_nowait(dqp))
+                return (XFS_ITEM_LOCKED);
+
+        retval = XFS_ITEM_SUCCESS;
+        if (! xfs_qm_dqflock_nowait(dqp)) {
+                /*
+                 * The dquot is already being flushed.  It may have been
+                 * flushed delayed write, however, and we don't want to
+                 * get stuck waiting for that to complete.  So, we want to check
+                 * to see if we can lock the dquot's buffer without sleeping.
+                 * If we can and it is marked for delayed write, then we
+                 * hold it and send it out from the push routine.  We don't
+                 * want to do that now since we might sleep in the device
+                 * strategy routine.  We also don't want to grab the buffer lock
+                 * here because we'd like not to call into the buffer cache
+                 * while holding the AIL_LOCK.
+                 * Make sure to only return PUSHBUF if we set pushbuf_flag
+                 * ourselves.  If someone else is doing it then we don't
+                 * want to go to the push routine and duplicate their efforts.
+                 */
+                if (qip->qli_pushbuf_flag == 0) {
+                        qip->qli_pushbuf_flag = 1;
+                        ASSERT(qip->qli_format.qlf_blkno == dqp->q_blkno);
+#ifdef DEBUG
+                        qip->qli_push_owner = get_thread_id();
+#endif
+                        /*
+                         * The dquot is left locked.
+                         */
+                        retval = XFS_ITEM_PUSHBUF;
+                } else {
+                        retval = XFS_ITEM_FLUSHING;
+                        xfs_dqunlock_nonotify(dqp);
+                }
+        }
+
+        ASSERT(qip->qli_item.li_flags & XFS_LI_IN_AIL);
+        return (retval);
+}
+
+
+/*
+ * Unlock the dquot associated with the log item.
+ * Clear the fields of the dquot and dquot log item that
+ * are specific to the current transaction.  If the
+ * hold flags is set, do not unlock the dquot.
+ */
+STATIC void
+xfs_qm_dquot_logitem_unlock(
+        xfs_dq_logitem_t    *ql)
+{
+        xfs_dquot_t     *dqp;
+
+        ASSERT(ql != NULL);
+        dqp = ql->qli_dquot;
+        ASSERT(XFS_DQ_IS_LOCKED(dqp));
+
+        /*
+         * Clear the transaction pointer in the dquot
+         */
+        dqp->q_transp = NULL;
+
+        /*
+         * dquots are never 'held' from getting unlocked at the end of
+         * a transaction.  Their locking and unlocking is hidden inside the
+         * transaction layer, within trans_commit. Hence, no LI_HOLD flag
+         * for the logitem.
+         */
+        xfs_dqunlock(dqp);
+}
+
+
+/*
+ * The transaction with the dquot locked has aborted.  The dquot
+ * must not be dirty within the transaction.  We simply unlock just
+ * as if the transaction had been cancelled.
+ */
+STATIC void
+xfs_qm_dquot_logitem_abort(
+        xfs_dq_logitem_t    *ql)
+{
+        xfs_qm_dquot_logitem_unlock(ql);
+}
+
+/*
+ * this needs to stamp an lsn into the dquot, I think.
+ * rpc's that look at user dquot's would then have to
+ * push on the dependency recorded in the dquot
+ */
+/* ARGSUSED */
+STATIC void
+xfs_qm_dquot_logitem_committing(
+        xfs_dq_logitem_t        *l,
+        xfs_lsn_t               lsn)
+{
+        return;
+}
+
+
+/*
+ * This is the ops vector for dquots
+ */
+struct xfs_item_ops xfs_dquot_item_ops = {
+        .iop_size       = (uint(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_size,
+        .iop_format     = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
+                                        xfs_qm_dquot_logitem_format,
+        .iop_pin        = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_pin,
+        .iop_unpin      = (void(*)(xfs_log_item_t*, int))
+                                        xfs_qm_dquot_logitem_unpin,
+        .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t*))
+                                        xfs_qm_dquot_logitem_unpin_remove,
+        .iop_trylock    = (uint(*)(xfs_log_item_t*))
+                                        xfs_qm_dquot_logitem_trylock,
+        .iop_unlock     = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_unlock,
+        .iop_committed  = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t))
+                                        xfs_qm_dquot_logitem_committed,
+        .iop_push       = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_push,
+        .iop_abort      = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_abort,
+        .iop_pushbuf    = (void(*)(xfs_log_item_t*))
+                                        xfs_qm_dquot_logitem_pushbuf,
+        .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t))
+                                        xfs_qm_dquot_logitem_committing
+};
+
+/*
+ * Initialize the dquot log item for a newly allocated dquot.
+ * The dquot isn't locked at this point, but it isn't on any of the lists
+ * either, so we don't care.
+ */
+void
+xfs_qm_dquot_logitem_init(
+        struct xfs_dquot *dqp)
+{
+        xfs_dq_logitem_t  *lp;
+        lp = &dqp->q_logitem;
+
+        lp->qli_item.li_type = XFS_LI_DQUOT;
+        lp->qli_item.li_ops = &xfs_dquot_item_ops;
+        lp->qli_item.li_mountp = dqp->q_mount;
+        lp->qli_dquot = dqp;
+        lp->qli_format.qlf_type = XFS_LI_DQUOT;
+        lp->qli_format.qlf_id = INT_GET(dqp->q_core.d_id, ARCH_CONVERT);
+        lp->qli_format.qlf_blkno = dqp->q_blkno;
+        lp->qli_format.qlf_len = 1;
+        /*
+         * This is just the offset of this dquot within its buffer
+         * (which is currently 1 FSB and probably won't change).
+         * Hence 32 bits for this offset should be just fine.
+         * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t))
+         * here, and recompute it at recovery time.
+         */
+        lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset;
+}
+
+/*------------------  QUOTAOFF LOG ITEMS  -------------------*/
+
+/*
+ * This returns the number of iovecs needed to log the given quotaoff item.
+ * We only need 1 iovec for an quotaoff item.  It just logs the
+ * quotaoff_log_format structure.
+ */
+/*ARGSUSED*/
+STATIC uint
+xfs_qm_qoff_logitem_size(xfs_qoff_logitem_t *qf)
+{
+        return (1);
+}
+
+/*
+ * This is called to fill in the vector of log iovecs for the
+ * given quotaoff log item. We use only 1 iovec, and we point that
+ * at the quotaoff_log_format structure embedded in the quotaoff item.
+ * It is at this point that we assert that all of the extent
+ * slots in the quotaoff item have been filled.
+ */
+STATIC void
+xfs_qm_qoff_logitem_format(xfs_qoff_logitem_t   *qf,
+                           xfs_log_iovec_t      *log_vector)
+{
+        ASSERT(qf->qql_format.qf_type == XFS_LI_QUOTAOFF);
+
+        log_vector->i_addr = (xfs_caddr_t)&(qf->qql_format);
+        log_vector->i_len = sizeof(xfs_qoff_logitem_t);
+        qf->qql_format.qf_size = 1;
+}
+
+
+/*
+ * Pinning has no meaning for an quotaoff item, so just return.
+ */
+/*ARGSUSED*/
+STATIC void
+xfs_qm_qoff_logitem_pin(xfs_qoff_logitem_t *qf)
+{
+        return;
+}
+
+
+/*
+ * Since pinning has no meaning for an quotaoff item, unpinning does
+ * not either.
+ */
+/*ARGSUSED*/
+STATIC void
+xfs_qm_qoff_logitem_unpin(xfs_qoff_logitem_t *qf, int stale)
+{
+        return;
+}
+
+/*ARGSUSED*/
+STATIC void
+xfs_qm_qoff_logitem_unpin_remove(xfs_qoff_logitem_t *qf, xfs_trans_t *tp)
+{
+        return;
+}
+
+/*
+ * Quotaoff items have no locking, so just return success.
+ */
+/*ARGSUSED*/
+STATIC uint
+xfs_qm_qoff_logitem_trylock(xfs_qoff_logitem_t *qf)
+{
+        return XFS_ITEM_LOCKED;
+}
+
+/*
+ * Quotaoff items have no locking or pushing, so return failure
+ * so that the caller doesn't bother with us.
+ */
+/*ARGSUSED*/
+STATIC void
+xfs_qm_qoff_logitem_unlock(xfs_qoff_logitem_t *qf)
+{
+        return;
+}
+
+/*
+ * The quotaoff-start-item is logged only once and cannot be moved in the log,
+ * so simply return the lsn at which it's been logged.
+ */
+/*ARGSUSED*/
+STATIC xfs_lsn_t
+xfs_qm_qoff_logitem_committed(xfs_qoff_logitem_t *qf, xfs_lsn_t lsn)
+{
+        return (lsn);
+}
+
+/*
+ * The transaction of which this QUOTAOFF is a part has been aborted.
+ * Just clean up after ourselves.
+ * Shouldn't this never happen in the case of qoffend logitems? XXX
+ */
+STATIC void
+xfs_qm_qoff_logitem_abort(xfs_qoff_logitem_t *qf)
+{
+        kmem_free(qf, sizeof(xfs_qoff_logitem_t));
+}
+
+/*
+ * There isn't much you can do to push on an quotaoff item.  It is simply
+ * stuck waiting for the log to be flushed to disk.
+ */
+/*ARGSUSED*/
+STATIC void
+xfs_qm_qoff_logitem_push(xfs_qoff_logitem_t *qf)
+{
+        return;
+}
+
+
+/*ARGSUSED*/
+STATIC xfs_lsn_t
+xfs_qm_qoffend_logitem_committed(
+        xfs_qoff_logitem_t *qfe,
+        xfs_lsn_t lsn)
+{
+        xfs_qoff_logitem_t      *qfs;
+        SPLDECL(s);
+
+        qfs = qfe->qql_start_lip;
+        AIL_LOCK(qfs->qql_item.li_mountp,s);
+        /*
+         * Delete the qoff-start logitem from the AIL.
+         * xfs_trans_delete_ail() drops the AIL lock.
+         */
+        xfs_trans_delete_ail(qfs->qql_item.li_mountp, (xfs_log_item_t *)qfs, s);
+        kmem_free(qfs, sizeof(xfs_qoff_logitem_t));
+        kmem_free(qfe, sizeof(xfs_qoff_logitem_t));
+        return (xfs_lsn_t)-1;
+}
+
+/*
+ * XXX rcc - don't know quite what to do with this.  I think we can
+ * just ignore it.  The only time that isn't the case is if we allow
+ * the client to somehow see that quotas have been turned off in which
+ * we can't allow that to get back until the quotaoff hits the disk.
+ * So how would that happen?  Also, do we need different routines for
+ * quotaoff start and quotaoff end?  I suspect the answer is yes but
+ * to be sure, I need to look at the recovery code and see how quota off
+ * recovery is handled (do we roll forward or back or do something else).
+ * If we roll forwards or backwards, then we need two separate routines,
+ * one that does nothing and one that stamps in the lsn that matters
+ * (truly makes the quotaoff irrevocable).  If we do something else,
+ * then maybe we don't need two.
+ */
+/* ARGSUSED */
+STATIC void
+xfs_qm_qoff_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn)
+{
+        return;
+}
+
+/* ARGSUSED */
+STATIC void
+xfs_qm_qoffend_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn)
+{
+        return;
+}
+
+struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
+        .iop_size       = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size,
+        .iop_format     = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
+                                        xfs_qm_qoff_logitem_format,
+        .iop_pin        = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin,
+        .iop_unpin      = (void(*)(xfs_log_item_t* ,int))
+                                        xfs_qm_qoff_logitem_unpin,
+        .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*))
+                                        xfs_qm_qoff_logitem_unpin_remove,
+        .iop_trylock    = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock,
+        .iop_unlock     = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock,
+        .iop_committed  = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t))
+                                        xfs_qm_qoffend_logitem_committed,
+        .iop_push       = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push,
+        .iop_abort      = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_abort,
+        .iop_pushbuf    = NULL,
+        .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t))
+                                        xfs_qm_qoffend_logitem_committing
+};
+
+/*
+ * This is the ops vector shared by all quotaoff-start log items.
+ */
+struct xfs_item_ops xfs_qm_qoff_logitem_ops = {
+        .iop_size       = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size,
+        .iop_format     = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
+                                        xfs_qm_qoff_logitem_format,
+        .iop_pin        = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin,
+        .iop_unpin      = (void(*)(xfs_log_item_t*, int))
+                                        xfs_qm_qoff_logitem_unpin,
+        .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*))
+                                        xfs_qm_qoff_logitem_unpin_remove,
+        .iop_trylock    = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock,
+        .iop_unlock     = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock,
+        .iop_committed  = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t))
+                                        xfs_qm_qoff_logitem_committed,
+        .iop_push       = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push,
+        .iop_abort      = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_abort,
+        .iop_pushbuf    = NULL,
+        .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t))
+                                        xfs_qm_qoff_logitem_committing
+};
+
+/*
+ * Allocate and initialize an quotaoff item of the correct quota type(s).
+ */
+xfs_qoff_logitem_t *
+xfs_qm_qoff_logitem_init(
+        struct xfs_mount *mp,
+        xfs_qoff_logitem_t *start,
+        uint flags)
+{
+        xfs_qoff_logitem_t      *qf;
+
+        qf = (xfs_qoff_logitem_t*) kmem_zalloc(sizeof(xfs_qoff_logitem_t), KM_SLEEP);
+
+        qf->qql_item.li_type = XFS_LI_QUOTAOFF;
+        if (start)
+                qf->qql_item.li_ops = &xfs_qm_qoffend_logitem_ops;
+        else
+                qf->qql_item.li_ops = &xfs_qm_qoff_logitem_ops;
+        qf->qql_item.li_mountp = mp;
+        qf->qql_format.qf_type = XFS_LI_QUOTAOFF;
+        qf->qql_format.qf_flags = flags;
+        qf->qql_start_lip = start;
+        return (qf);
+}