[linux.git] / fs / xfs / xfs_dquot_item.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2000-2003 Silicon Graphics, Inc.
 * All Rights Reserved.
 */
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_inode.h"
#include "xfs_quota.h"
#include "xfs_trans.h"
#include "xfs_buf_item.h"
#include "xfs_trans_priv.h"
#include "xfs_qm.h"
#include "xfs_log.h"

static inline struct xfs_dq_logitem *DQUOT_ITEM(struct xfs_log_item *lip)
{
	return container_of(lip, struct xfs_dq_logitem, qli_item);
}

/*
 * returns the number of iovecs needed to log the given dquot item.
 */
STATIC void
xfs_qm_dquot_logitem_size(
	struct xfs_log_item	*lip,
	int			*nvecs,
	int			*nbytes)
{
	*nvecs += 2;
	*nbytes += sizeof(struct xfs_dq_logformat) +
		   sizeof(struct xfs_disk_dquot);
}

/*
 * fills in the vector of log iovecs for the given dquot log item.
 */
STATIC void
xfs_qm_dquot_logitem_format(
	struct xfs_log_item	*lip,
	struct xfs_log_vec	*lv)
{
	struct xfs_disk_dquot	ddq;
	struct xfs_dq_logitem	*qlip = DQUOT_ITEM(lip);
	struct xfs_log_iovec	*vecp = NULL;
	struct xfs_dq_logformat	*qlf;

	qlf = xlog_prepare_iovec(lv, &vecp, XLOG_REG_TYPE_QFORMAT);
	qlf->qlf_type = XFS_LI_DQUOT;
	qlf->qlf_size = 2;
	qlf->qlf_id = qlip->qli_dquot->q_id;
	qlf->qlf_blkno = qlip->qli_dquot->q_blkno;
	qlf->qlf_len = 1;
	qlf->qlf_boffset = qlip->qli_dquot->q_bufoffset;
	xlog_finish_iovec(lv, vecp, sizeof(struct xfs_dq_logformat));

	xfs_dquot_to_disk(&ddq, qlip->qli_dquot);

	xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_DQUOT, &ddq,
			sizeof(struct xfs_disk_dquot));
}

/*
 * Increment the pin count of the given dquot.
 */
STATIC void
xfs_qm_dquot_logitem_pin(
	struct xfs_log_item	*lip)
{
	struct xfs_dquot	*dqp = DQUOT_ITEM(lip)->qli_dquot;

	ASSERT(XFS_DQ_IS_LOCKED(dqp));
	atomic_inc(&dqp->q_pincount);
}

/*
 * 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_qm_dquot_logitem_pin().
 */
STATIC void
xfs_qm_dquot_logitem_unpin(
	struct xfs_log_item	*lip,
	int			remove)
{
	struct xfs_dquot	*dqp = DQUOT_ITEM(lip)->qli_dquot;

	ASSERT(atomic_read(&dqp->q_pincount) > 0);
	if (atomic_dec_and_test(&dqp->q_pincount))
		wake_up(&dqp->q_pinwait);
}

/*
 * 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(
	struct xfs_dquot	*dqp)
{
	ASSERT(XFS_DQ_IS_LOCKED(dqp));
	if (atomic_read(&dqp->q_pincount) == 0)
		return;

	/*
	 * Give the log a push so we don't wait here too long.
	 */
	xfs_log_force(dqp->q_mount, 0);
	wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0));
}

STATIC uint
xfs_qm_dquot_logitem_push(
	struct xfs_log_item	*lip,
	struct list_head	*buffer_list)
		__releases(&lip->li_ailp->ail_lock)
		__acquires(&lip->li_ailp->ail_lock)
{
	struct xfs_dquot	*dqp = DQUOT_ITEM(lip)->qli_dquot;
	struct xfs_buf		*bp = lip->li_buf;
	uint			rval = XFS_ITEM_SUCCESS;
	int			error;

	if (atomic_read(&dqp->q_pincount) > 0)
		return XFS_ITEM_PINNED;

	if (!xfs_dqlock_nowait(dqp))
		return XFS_ITEM_LOCKED;

	/*
	 * Re-check the pincount now that we stabilized the value by
	 * taking the quota lock.
	 */
	if (atomic_read(&dqp->q_pincount) > 0) {
		rval = XFS_ITEM_PINNED;
		goto out_unlock;
	}

	/*
	 * Someone else is already flushing the dquot.  Nothing we can do
	 * here but wait for the flush to finish and remove the item from
	 * the AIL.
	 */
	if (!xfs_dqflock_nowait(dqp)) {
		rval = XFS_ITEM_FLUSHING;
		goto out_unlock;
	}

	spin_unlock(&lip->li_ailp->ail_lock);

	error = xfs_qm_dqflush(dqp, &bp);
	if (!error) {
		if (!xfs_buf_delwri_queue(bp, buffer_list))
			rval = XFS_ITEM_FLUSHING;
		xfs_buf_relse(bp);
	} else if (error == -EAGAIN)
		rval = XFS_ITEM_LOCKED;

	spin_lock(&lip->li_ailp->ail_lock);
out_unlock:
	xfs_dqunlock(dqp);
	return rval;
}

STATIC void
xfs_qm_dquot_logitem_release(
	struct xfs_log_item	*lip)
{
	struct xfs_dquot	*dqp = DQUOT_ITEM(lip)->qli_dquot;

	ASSERT(XFS_DQ_IS_LOCKED(dqp));

	/*
	 * 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);
}

STATIC void
xfs_qm_dquot_logitem_committing(
	struct xfs_log_item	*lip,
	xfs_lsn_t		commit_lsn)
{
	return xfs_qm_dquot_logitem_release(lip);
}

static const struct xfs_item_ops xfs_dquot_item_ops = {
	.iop_size	= xfs_qm_dquot_logitem_size,
	.iop_format	= xfs_qm_dquot_logitem_format,
	.iop_pin	= xfs_qm_dquot_logitem_pin,
	.iop_unpin	= xfs_qm_dquot_logitem_unpin,
	.iop_release	= xfs_qm_dquot_logitem_release,
	.iop_committing	= xfs_qm_dquot_logitem_committing,
	.iop_push	= xfs_qm_dquot_logitem_push,
};

/*
 * 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)
{
	struct xfs_dq_logitem	*lp = &dqp->q_logitem;

	xfs_log_item_init(dqp->q_mount, &lp->qli_item, XFS_LI_DQUOT,
					&xfs_dquot_item_ops);
	lp->qli_dquot = dqp;
}

/*------------------  QUOTAOFF LOG ITEMS  -------------------*/

static inline struct xfs_qoff_logitem *QOFF_ITEM(struct xfs_log_item *lip)
{
	return container_of(lip, struct xfs_qoff_logitem, qql_item);
}


/*
 * 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.
 */
STATIC void
xfs_qm_qoff_logitem_size(
	struct xfs_log_item	*lip,
	int			*nvecs,
	int			*nbytes)
{
	*nvecs += 1;
	*nbytes += sizeof(struct xfs_qoff_logitem);
}

STATIC void
xfs_qm_qoff_logitem_format(
	struct xfs_log_item	*lip,
	struct xfs_log_vec	*lv)
{
	struct xfs_qoff_logitem	*qflip = QOFF_ITEM(lip);
	struct xfs_log_iovec	*vecp = NULL;
	struct xfs_qoff_logformat *qlf;

	qlf = xlog_prepare_iovec(lv, &vecp, XLOG_REG_TYPE_QUOTAOFF);
	qlf->qf_type = XFS_LI_QUOTAOFF;
	qlf->qf_size = 1;
	qlf->qf_flags = qflip->qql_flags;
	xlog_finish_iovec(lv, vecp, sizeof(struct xfs_qoff_logitem));
}

/*
 * There isn't much you can do to push a quotaoff item.  It is simply
 * stuck waiting for the log to be flushed to disk.
 */
STATIC uint
xfs_qm_qoff_logitem_push(
	struct xfs_log_item	*lip,
	struct list_head	*buffer_list)
{
	return XFS_ITEM_LOCKED;
}

STATIC xfs_lsn_t
xfs_qm_qoffend_logitem_committed(
	struct xfs_log_item	*lip,
	xfs_lsn_t		lsn)
{
	struct xfs_qoff_logitem	*qfe = QOFF_ITEM(lip);
	struct xfs_qoff_logitem	*qfs = qfe->qql_start_lip;

	xfs_qm_qoff_logitem_relse(qfs);

	kmem_free(lip->li_lv_shadow);
	kmem_free(qfe);
	return (xfs_lsn_t)-1;
}

STATIC void
xfs_qm_qoff_logitem_release(
	struct xfs_log_item	*lip)
{
	struct xfs_qoff_logitem	*qoff = QOFF_ITEM(lip);

	if (test_bit(XFS_LI_ABORTED, &lip->li_flags)) {
		if (qoff->qql_start_lip)
			xfs_qm_qoff_logitem_relse(qoff->qql_start_lip);
		xfs_qm_qoff_logitem_relse(qoff);
	}
}

static const struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
	.iop_size	= xfs_qm_qoff_logitem_size,
	.iop_format	= xfs_qm_qoff_logitem_format,
	.iop_committed	= xfs_qm_qoffend_logitem_committed,
	.iop_push	= xfs_qm_qoff_logitem_push,
	.iop_release	= xfs_qm_qoff_logitem_release,
};

static const struct xfs_item_ops xfs_qm_qoff_logitem_ops = {
	.iop_size	= xfs_qm_qoff_logitem_size,
	.iop_format	= xfs_qm_qoff_logitem_format,
	.iop_push	= xfs_qm_qoff_logitem_push,
	.iop_release	= xfs_qm_qoff_logitem_release,
};

/*
 * Delete the quotaoff intent from the AIL and free it. On success,
 * this should only be called for the start item. It can be used for
 * either on shutdown or abort.
 */
void
xfs_qm_qoff_logitem_relse(
	struct xfs_qoff_logitem	*qoff)
{
	struct xfs_log_item	*lip = &qoff->qql_item;

	ASSERT(test_bit(XFS_LI_IN_AIL, &lip->li_flags) ||
	       test_bit(XFS_LI_ABORTED, &lip->li_flags) ||
	       XFS_FORCED_SHUTDOWN(lip->li_mountp));
	xfs_trans_ail_delete(lip, 0);
	kmem_free(lip->li_lv_shadow);
	kmem_free(qoff);
}

/*
 * Allocate and initialize an quotaoff item of the correct quota type(s).
 */
struct xfs_qoff_logitem *
xfs_qm_qoff_logitem_init(
	struct xfs_mount	*mp,
	struct xfs_qoff_logitem	*start,
	uint			flags)
{
	struct xfs_qoff_logitem	*qf;

	qf = kmem_zalloc(sizeof(struct xfs_qoff_logitem), 0);

	xfs_log_item_init(mp, &qf->qql_item, XFS_LI_QUOTAOFF, start ?
			&xfs_qm_qoffend_logitem_ops : &xfs_qm_qoff_logitem_ops);
	qf->qql_item.li_mountp = mp;
	qf->qql_start_lip = start;
	qf->qql_flags = flags;
	return qf;
}
Commit	Line	Data
0b61f8a4	1	// SPDX-License-Identifier: GPL-2.0
1da177e4	2	/*
4ce3121f NS	3	* Copyright (c) 2000-2003 Silicon Graphics, Inc.
4ce3121f NS	4	* All Rights Reserved.
1da177e4	5	*/
1da177e4 LT	6	#include "xfs.h"
1da177e4 LT	7	#include "xfs_fs.h"
5467b34b	8	#include "xfs_shared.h"
6ca1c906	9	#include "xfs_format.h"
239880ef DC	10	#include "xfs_log_format.h"
239880ef DC	11	#include "xfs_trans_resv.h"
1da177e4	12	#include "xfs_mount.h"
1da177e4	13	#include "xfs_inode.h"
a4fbe6ab	14	#include "xfs_quota.h"
239880ef	15	#include "xfs_trans.h"
1da177e4 LT	16	#include "xfs_buf_item.h"
1da177e4 LT	17	#include "xfs_trans_priv.h"
1da177e4	18	#include "xfs_qm.h"
239880ef	19	#include "xfs_log.h"
1da177e4	20
7bfa31d8 CH	21	static inline struct xfs_dq_logitem DQUOT_ITEM(struct xfs_log_item lip)
	22	{
	23	return container_of(lip, struct xfs_dq_logitem, qli_item);
	24	}
	25
1da177e4 LT	26	/*
	27	* returns the number of iovecs needed to log the given dquot item.
	28	*/
166d1368	29	STATIC void
1da177e4	30	xfs_qm_dquot_logitem_size(
166d1368 DC	31	struct xfs_log_item *lip,
	32	int *nvecs,
	33	int *nbytes)
1da177e4	34	{
166d1368 DC	35	*nvecs += 2;
	36	*nbytes += sizeof(struct xfs_dq_logformat) +
	37	sizeof(struct xfs_disk_dquot);
1da177e4 LT	38	}
	39
	40	/*
	41	* fills in the vector of log iovecs for the given dquot log item.
	42	*/
	43	STATIC void
	44	xfs_qm_dquot_logitem_format(
7bfa31d8	45	struct xfs_log_item *lip,
bde7cff6	46	struct xfs_log_vec *lv)
1da177e4	47	{
0b0fa1d1	48	struct xfs_disk_dquot ddq;
7bfa31d8	49	struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip);
bde7cff6	50	struct xfs_log_iovec *vecp = NULL;
ce8e9629	51	struct xfs_dq_logformat *qlf;
1da177e4	52
ce8e9629 CH	53	qlf = xlog_prepare_iovec(lv, &vecp, XLOG_REG_TYPE_QFORMAT);
	54	qlf->qlf_type = XFS_LI_DQUOT;
	55	qlf->qlf_size = 2;
c51df733	56	qlf->qlf_id = qlip->qli_dquot->q_id;
ce8e9629 CH	57	qlf->qlf_blkno = qlip->qli_dquot->q_blkno;
	58	qlf->qlf_len = 1;
	59	qlf->qlf_boffset = qlip->qli_dquot->q_bufoffset;
	60	xlog_finish_iovec(lv, vecp, sizeof(struct xfs_dq_logformat));
bde7cff6	61
0b0fa1d1 DW	62	xfs_dquot_to_disk(&ddq, qlip->qli_dquot);
	63
	64	xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_DQUOT, &ddq,
1234351c	65	sizeof(struct xfs_disk_dquot));
1da177e4 LT	66	}
	67
	68	/*
	69	* Increment the pin count of the given dquot.
1da177e4 LT	70	*/
	71	STATIC void
	72	xfs_qm_dquot_logitem_pin(
7bfa31d8	73	struct xfs_log_item *lip)
1da177e4	74	{
7bfa31d8	75	struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot;
1da177e4	76
1da177e4	77	ASSERT(XFS_DQ_IS_LOCKED(dqp));
d1de8021	78	atomic_inc(&dqp->q_pincount);
1da177e4 LT	79	}
	80
	81	/*
	82	* Decrement the pin count of the given dquot, and wake up
	83	* anyone in xfs_dqwait_unpin() if the count goes to 0. The
bc3048e3 PL	84	* dquot must have been previously pinned with a call to
bc3048e3 PL	85	* xfs_qm_dquot_logitem_pin().
1da177e4	86	*/
1da177e4 LT	87	STATIC void
1da177e4 LT	88	xfs_qm_dquot_logitem_unpin(
7bfa31d8	89	struct xfs_log_item *lip,
9412e318	90	int remove)
1da177e4	91	{
7bfa31d8	92	struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot;
1da177e4	93
bc3048e3 PL	94	ASSERT(atomic_read(&dqp->q_pincount) > 0);
	95	if (atomic_dec_and_test(&dqp->q_pincount))
	96	wake_up(&dqp->q_pinwait);
1da177e4 LT	97	}
1da177e4 LT	98
1da177e4 LT	99	/*
	100	* This is called to wait for the given dquot to be unpinned.
	101	* Most of these pin/unpin routines are plagiarized from inode code.
	102	*/
	103	void
	104	xfs_qm_dqunpin_wait(
7bfa31d8	105	struct xfs_dquot *dqp)
1da177e4	106	{
1da177e4	107	ASSERT(XFS_DQ_IS_LOCKED(dqp));
bc3048e3	108	if (atomic_read(&dqp->q_pincount) == 0)
1da177e4	109	return;
1da177e4 LT	110
	111	/*
	112	* Give the log a push so we don't wait here too long.
	113	*/
a14a348b	114	xfs_log_force(dqp->q_mount, 0);
bc3048e3	115	wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0));
1da177e4 LT	116	}
1da177e4 LT	117
1da177e4	118	STATIC uint
43ff2122 CH	119	xfs_qm_dquot_logitem_push(
43ff2122 CH	120	struct xfs_log_item *lip,
57e80956 MW	121	struct list_head *buffer_list)
	122	__releases(&lip->li_ailp->ail_lock)
	123	__acquires(&lip->li_ailp->ail_lock)
1da177e4	124	{
7bfa31d8	125	struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot;
373b0589	126	struct xfs_buf *bp = lip->li_buf;
43ff2122 CH	127	uint rval = XFS_ITEM_SUCCESS;
43ff2122 CH	128	int error;
1da177e4	129
bc3048e3	130	if (atomic_read(&dqp->q_pincount) > 0)
d808f617	131	return XFS_ITEM_PINNED;
1da177e4	132
800b484e	133	if (!xfs_dqlock_nowait(dqp))
d808f617	134	return XFS_ITEM_LOCKED;
1da177e4	135
fe7257fd CH	136	/*
	137	* Re-check the pincount now that we stabilized the value by
	138	* taking the quota lock.
	139	*/
	140	if (atomic_read(&dqp->q_pincount) > 0) {
43ff2122 CH	141	rval = XFS_ITEM_PINNED;
43ff2122 CH	142	goto out_unlock;
fe7257fd CH	143	}
fe7257fd CH	144
43ff2122 CH	145	/*
	146	* Someone else is already flushing the dquot. Nothing we can do
	147	* here but wait for the flush to finish and remove the item from
	148	* the AIL.
	149	*/
e1f49cf2	150	if (!xfs_dqflock_nowait(dqp)) {
43ff2122 CH	151	rval = XFS_ITEM_FLUSHING;
	152	goto out_unlock;
	153	}
	154
57e80956	155	spin_unlock(&lip->li_ailp->ail_lock);
43ff2122 CH	156
43ff2122 CH	157	error = xfs_qm_dqflush(dqp, &bp);
609001bc	158	if (!error) {
43ff2122 CH	159	if (!xfs_buf_delwri_queue(bp, buffer_list))
	160	rval = XFS_ITEM_FLUSHING;
	161	xfs_buf_relse(bp);
8d3d7e2b BF	162	} else if (error == -EAGAIN)
8d3d7e2b BF	163	rval = XFS_ITEM_LOCKED;
1da177e4	164
57e80956	165	spin_lock(&lip->li_ailp->ail_lock);
43ff2122 CH	166	out_unlock:
	167	xfs_dqunlock(dqp);
	168	return rval;
1da177e4 LT	169	}
1da177e4 LT	170
1da177e4	171	STATIC void
ddf92053	172	xfs_qm_dquot_logitem_release(
7bfa31d8	173	struct xfs_log_item *lip)
1da177e4	174	{
7bfa31d8	175	struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot;
1da177e4	176
1da177e4 LT	177	ASSERT(XFS_DQ_IS_LOCKED(dqp));
1da177e4 LT	178
1da177e4 LT	179	/*
	180	* dquots are never 'held' from getting unlocked at the end of
	181	* a transaction. Their locking and unlocking is hidden inside the
	182	* transaction layer, within trans_commit. Hence, no LI_HOLD flag
	183	* for the logitem.
	184	*/
	185	xfs_dqunlock(dqp);
	186	}
	187
ddf92053 CH	188	STATIC void
	189	xfs_qm_dquot_logitem_committing(
	190	struct xfs_log_item *lip,
	191	xfs_lsn_t commit_lsn)
	192	{
	193	return xfs_qm_dquot_logitem_release(lip);
	194	}
	195
272e42b2	196	static const struct xfs_item_ops xfs_dquot_item_ops = {
7bfa31d8 CH	197	.iop_size = xfs_qm_dquot_logitem_size,
	198	.iop_format = xfs_qm_dquot_logitem_format,
	199	.iop_pin = xfs_qm_dquot_logitem_pin,
	200	.iop_unpin = xfs_qm_dquot_logitem_unpin,
ddf92053 CH	201	.iop_release = xfs_qm_dquot_logitem_release,
ddf92053 CH	202	.iop_committing = xfs_qm_dquot_logitem_committing,
7bfa31d8	203	.iop_push = xfs_qm_dquot_logitem_push,
1da177e4 LT	204	};
	205
	206	/*
	207	* Initialize the dquot log item for a newly allocated dquot.
	208	* The dquot isn't locked at this point, but it isn't on any of the lists
	209	* either, so we don't care.
	210	*/
	211	void
	212	xfs_qm_dquot_logitem_init(
7bfa31d8	213	struct xfs_dquot *dqp)
1da177e4	214	{
7bfa31d8	215	struct xfs_dq_logitem *lp = &dqp->q_logitem;
1da177e4	216
43f5efc5 DC	217	xfs_log_item_init(dqp->q_mount, &lp->qli_item, XFS_LI_DQUOT,
43f5efc5 DC	218	&xfs_dquot_item_ops);
1da177e4	219	lp->qli_dquot = dqp;
1da177e4 LT	220	}
	221
	222	/------------------ QUOTAOFF LOG ITEMS -------------------/
	223
7bfa31d8 CH	224	static inline struct xfs_qoff_logitem QOFF_ITEM(struct xfs_log_item lip)
	225	{
	226	return container_of(lip, struct xfs_qoff_logitem, qql_item);
	227	}
	228
	229
1da177e4 LT	230	/*
	231	* This returns the number of iovecs needed to log the given quotaoff item.
	232	* We only need 1 iovec for an quotaoff item. It just logs the
	233	* quotaoff_log_format structure.
	234	*/
166d1368	235	STATIC void
7bfa31d8	236	xfs_qm_qoff_logitem_size(
166d1368 DC	237	struct xfs_log_item *lip,
	238	int *nvecs,
	239	int *nbytes)
1da177e4	240	{
166d1368 DC	241	*nvecs += 1;
166d1368 DC	242	*nbytes += sizeof(struct xfs_qoff_logitem);
1da177e4 LT	243	}
1da177e4 LT	244
1da177e4	245	STATIC void
7bfa31d8 CH	246	xfs_qm_qoff_logitem_format(
7bfa31d8 CH	247	struct xfs_log_item *lip,
bde7cff6	248	struct xfs_log_vec *lv)
1da177e4	249	{
7bfa31d8	250	struct xfs_qoff_logitem *qflip = QOFF_ITEM(lip);
bde7cff6	251	struct xfs_log_iovec *vecp = NULL;
ffda4e83	252	struct xfs_qoff_logformat *qlf;
1da177e4	253
ffda4e83 CH	254	qlf = xlog_prepare_iovec(lv, &vecp, XLOG_REG_TYPE_QUOTAOFF);
	255	qlf->qf_type = XFS_LI_QUOTAOFF;
	256	qlf->qf_size = 1;
	257	qlf->qf_flags = qflip->qql_flags;
	258	xlog_finish_iovec(lv, vecp, sizeof(struct xfs_qoff_logitem));
1da177e4 LT	259	}
1da177e4 LT	260
1da177e4	261	/*
43ff2122 CH	262	* There isn't much you can do to push a quotaoff item. It is simply
43ff2122 CH	263	* stuck waiting for the log to be flushed to disk.
1da177e4	264	*/
1da177e4	265	STATIC uint
43ff2122 CH	266	xfs_qm_qoff_logitem_push(
	267	struct xfs_log_item *lip,
	268	struct list_head *buffer_list)
1da177e4 LT	269	{
	270	return XFS_ITEM_LOCKED;
	271	}
	272
1da177e4 LT	273	STATIC xfs_lsn_t
1da177e4 LT	274	xfs_qm_qoffend_logitem_committed(
7bfa31d8 CH	275	struct xfs_log_item *lip,
7bfa31d8 CH	276	xfs_lsn_t lsn)
1da177e4	277	{
7bfa31d8 CH	278	struct xfs_qoff_logitem *qfe = QOFF_ITEM(lip);
7bfa31d8 CH	279	struct xfs_qoff_logitem *qfs = qfe->qql_start_lip;
1da177e4	280
854f82b1	281	xfs_qm_qoff_logitem_relse(qfs);
7bfa31d8	282
b1c5ebb2	283	kmem_free(lip->li_lv_shadow);
f0e2d93c	284	kmem_free(qfe);
1da177e4 LT	285	return (xfs_lsn_t)-1;
	286	}
	287
8a627143 BF	288	STATIC void
	289	xfs_qm_qoff_logitem_release(
	290	struct xfs_log_item *lip)
	291	{
	292	struct xfs_qoff_logitem *qoff = QOFF_ITEM(lip);
	293
	294	if (test_bit(XFS_LI_ABORTED, &lip->li_flags)) {
	295	if (qoff->qql_start_lip)
	296	xfs_qm_qoff_logitem_relse(qoff->qql_start_lip);
	297	xfs_qm_qoff_logitem_relse(qoff);
	298	}
	299	}
	300
272e42b2	301	static const struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
7bfa31d8 CH	302	.iop_size = xfs_qm_qoff_logitem_size,
7bfa31d8 CH	303	.iop_format = xfs_qm_qoff_logitem_format,
7bfa31d8 CH	304	.iop_committed = xfs_qm_qoffend_logitem_committed,
7bfa31d8 CH	305	.iop_push = xfs_qm_qoff_logitem_push,
8a627143	306	.iop_release = xfs_qm_qoff_logitem_release,
1da177e4 LT	307	};
1da177e4 LT	308
272e42b2	309	static const struct xfs_item_ops xfs_qm_qoff_logitem_ops = {
7bfa31d8 CH	310	.iop_size = xfs_qm_qoff_logitem_size,
7bfa31d8 CH	311	.iop_format = xfs_qm_qoff_logitem_format,
7bfa31d8	312	.iop_push = xfs_qm_qoff_logitem_push,
8a627143	313	.iop_release = xfs_qm_qoff_logitem_release,
1da177e4 LT	314	};
1da177e4 LT	315
854f82b1 BF	316	/*
	317	* Delete the quotaoff intent from the AIL and free it. On success,
	318	* this should only be called for the start item. It can be used for
	319	* either on shutdown or abort.
	320	*/
	321	void
	322	xfs_qm_qoff_logitem_relse(
	323	struct xfs_qoff_logitem *qoff)
	324	{
	325	struct xfs_log_item *lip = &qoff->qql_item;
	326
	327	ASSERT(test_bit(XFS_LI_IN_AIL, &lip->li_flags) \|\|
	328	test_bit(XFS_LI_ABORTED, &lip->li_flags) \|\|
	329	XFS_FORCED_SHUTDOWN(lip->li_mountp));
2b3cf093	330	xfs_trans_ail_delete(lip, 0);
854f82b1 BF	331	kmem_free(lip->li_lv_shadow);
	332	kmem_free(qoff);
	333	}
	334
1da177e4 LT	335	/*
	336	* Allocate and initialize an quotaoff item of the correct quota type(s).
	337	*/
7bfa31d8	338	struct xfs_qoff_logitem *
1da177e4	339	xfs_qm_qoff_logitem_init(
7bfa31d8 CH	340	struct xfs_mount *mp,
	341	struct xfs_qoff_logitem *start,
	342	uint flags)
1da177e4	343	{
7bfa31d8	344	struct xfs_qoff_logitem *qf;
1da177e4	345
707e0dda	346	qf = kmem_zalloc(sizeof(struct xfs_qoff_logitem), 0);
1da177e4	347
43f5efc5 DC	348	xfs_log_item_init(mp, &qf->qql_item, XFS_LI_QUOTAOFF, start ?
43f5efc5 DC	349	&xfs_qm_qoffend_logitem_ops : &xfs_qm_qoff_logitem_ops);
1da177e4	350	qf->qql_item.li_mountp = mp;
1da177e4	351	qf->qql_start_lip = start;
ffda4e83	352	qf->qql_flags = flags;
7bfa31d8	353	return qf;
1da177e4	354	}