mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Dave Chinner](/assets/img/avatar_default.png)
When an buffer IO error occurs, we want to mark all the log items attached to the buffer as failed. Open code the error handling loop so that we can modify the flagging for the different types of objects directly and independently of each other. This also allows us to remove the ->iop_error method from the log item operations. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
352 lines
8.4 KiB
C
352 lines
8.4 KiB
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_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 = be32_to_cpu(qlip->qli_dquot->q_core.d_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));
|
|
|
|
xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_DQUOT,
|
|
&qlip->qli_dquot->q_core,
|
|
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;
|
|
}
|