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xfs: acquire ->ail_lock from xfs_trans_ail_delete() 

Several callers acquire the lock just prior to the call. Callers
that require ->ail_lock for other purposes already check IN_AIL
state and thus don't require the additional shutdown check in the
helper. Push the lock down into xfs_trans_ail_delete(), open code
the instances that still acquire it, and remove the unnecessary ailp
parameter.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
alistair/sunxi64-5.8
Brian Foster 2020-05-06 13:25:23 -07:00 committed by Darrick J. Wong
parent b707fffda6
commit 849274c103
4 changed files with 25 additions and 25 deletions
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27
fs/xfs/xfs_buf_item.c
View File

@ -410,7 +410,6 @@ xfs_buf_item_unpin(
{
struct xfs_buf_log_item *bip = BUF_ITEM(lip);
xfs_buf_t *bp = bip->bli_buf;
struct xfs_ail *ailp = lip->li_ailp;
int stale = bip->bli_flags & XFS_BLI_STALE;
int freed;
@ -452,10 +451,10 @@ xfs_buf_item_unpin(
}
/*
* If we get called here because of an IO error, we may
* or may not have the item on the AIL. xfs_trans_ail_delete()
* will take care of that situation.
* xfs_trans_ail_delete() drops the AIL lock.
* If we get called here because of an IO error, we may or may
* not have the item on the AIL. xfs_trans_ail_delete() will
* take care of that situation. xfs_trans_ail_delete() drops
* the AIL lock.
*/
if (bip->bli_flags & XFS_BLI_STALE_INODE) {
xfs_buf_do_callbacks(bp);
@ -463,8 +462,7 @@ xfs_buf_item_unpin(
list_del_init(&bp->b_li_list);
bp->b_iodone = NULL;
} else {
spin_lock(&ailp->ail_lock);
xfs_trans_ail_delete(ailp, lip, SHUTDOWN_LOG_IO_ERROR);
xfs_trans_ail_delete(lip, SHUTDOWN_LOG_IO_ERROR);
xfs_buf_item_relse(bp);
ASSERT(bp->b_log_item == NULL);
}
@ -1205,22 +1203,19 @@ xfs_buf_iodone(
struct xfs_buf *bp,
struct xfs_log_item *lip)
{
struct xfs_ail *ailp = lip->li_ailp;
ASSERT(BUF_ITEM(lip)->bli_buf == bp);
xfs_buf_rele(bp);
/*
* If we are forcibly shutting down, this may well be
* off the AIL already. That's because we simulate the
* log-committed callbacks to unpin these buffers. Or we may never
* have put this item on AIL because of the transaction was
* aborted forcibly. xfs_trans_ail_delete() takes care of these.
* If we are forcibly shutting down, this may well be off the AIL
* already. That's because we simulate the log-committed callbacks to
* unpin these buffers. Or we may never have put this item on AIL
* because of the transaction was aborted forcibly.
* xfs_trans_ail_delete() takes care of these.
*
* Either way, AIL is useless if we're forcing a shutdown.
*/
spin_lock(&ailp->ail_lock);
xfs_trans_ail_delete(ailp, lip, SHUTDOWN_CORRUPT_INCORE);
xfs_trans_ail_delete(lip, SHUTDOWN_CORRUPT_INCORE);
xfs_buf_item_free(BUF_ITEM(lip));
}

6
fs/xfs/xfs_dquot.c
View File

@ -1021,6 +1021,7 @@ xfs_qm_dqflush_done(
struct xfs_dq_logitem *qip = (struct xfs_dq_logitem *)lip;
struct xfs_dquot *dqp = qip->qli_dquot;
struct xfs_ail *ailp = lip->li_ailp;
xfs_lsn_t tail_lsn;
/*
* We only want to pull the item from the AIL if its
@ -1034,10 +1035,11 @@ xfs_qm_dqflush_done(
((lip->li_lsn == qip->qli_flush_lsn) ||
test_bit(XFS_LI_FAILED, &lip->li_flags))) {
/* xfs_trans_ail_delete() drops the AIL lock. */
spin_lock(&ailp->ail_lock);
if (lip->li_lsn == qip->qli_flush_lsn) {
xfs_trans_ail_delete(ailp, lip, SHUTDOWN_CORRUPT_INCORE);
/* xfs_ail_update_finish() drops the AIL lock */
tail_lsn = xfs_ail_delete_one(ailp, lip);
xfs_ail_update_finish(ailp, tail_lsn);
} else {
/*
* Clear the failed state since we are about to drop the

3
fs/xfs/xfs_trans_ail.c
View File

@ -864,13 +864,14 @@ xfs_ail_delete_one(
*/
void
xfs_trans_ail_delete(
struct xfs_ail *ailp,
struct xfs_log_item *lip,
int shutdown_type)
{
struct xfs_ail *ailp = lip->li_ailp;
struct xfs_mount *mp = ailp->ail_mount;
xfs_lsn_t tail_lsn;
spin_lock(&ailp->ail_lock);
if (!test_bit(XFS_LI_IN_AIL, &lip->li_flags)) {
spin_unlock(&ailp->ail_lock);
if (!XFS_FORCED_SHUTDOWN(mp)) {

14
fs/xfs/xfs_trans_priv.h
View File

@ -94,8 +94,7 @@ xfs_trans_ail_update(
xfs_lsn_t xfs_ail_delete_one(struct xfs_ail *ailp, struct xfs_log_item *lip);
void xfs_ail_update_finish(struct xfs_ail *ailp, xfs_lsn_t old_lsn)
__releases(ailp->ail_lock);
void xfs_trans_ail_delete(struct xfs_ail *ailp, struct xfs_log_item *lip,
int shutdown_type);
void xfs_trans_ail_delete(struct xfs_log_item *lip, int shutdown_type);
static inline void
xfs_trans_ail_remove(
@ -103,13 +102,16 @@ xfs_trans_ail_remove(
int shutdown_type)
{
struct xfs_ail *ailp = lip->li_ailp;
xfs_lsn_t tail_lsn;
spin_lock(&ailp->ail_lock);
/* xfs_trans_ail_delete() drops the AIL lock */
if (test_bit(XFS_LI_IN_AIL, &lip->li_flags))
xfs_trans_ail_delete(ailp, lip, shutdown_type);
else
/* xfs_ail_update_finish() drops the AIL lock */
if (test_bit(XFS_LI_IN_AIL, &lip->li_flags)) {
tail_lsn = xfs_ail_delete_one(ailp, lip);
xfs_ail_update_finish(ailp, tail_lsn);
} else {
spin_unlock(&ailp->ail_lock);
}
}
void xfs_ail_push(struct xfs_ail *, xfs_lsn_t);