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@xxxxxxxxxx>
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
fs/xfs/xfs_buf_item.c | 27 +++++++++++----------------
fs/xfs/xfs_dquot.c | 6 ++++--
fs/xfs/xfs_trans_ail.c | 3 ++-
fs/xfs/xfs_trans_priv.h | 14 ++++++++------
4 files changed, 25 insertions(+), 25 deletions(-)
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index 1f7acffc99ba..06e306b49283 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -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));
}
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index ffe607733c50..5fb65f43b980 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -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
diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
index 2574d01e4a83..cfba691664c7 100644
--- a/fs/xfs/xfs_trans_ail.c
+++ b/fs/xfs/xfs_trans_ail.c
@@ -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)) {
diff --git a/fs/xfs/xfs_trans_priv.h b/fs/xfs/xfs_trans_priv.h
index 35655eac01a6..e4362fb8d483 100644
--- a/fs/xfs/xfs_trans_priv.h
+++ b/fs/xfs/xfs_trans_priv.h
@@ -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);
--
2.21.1
