[PATCH v3 13/17] xfs: combine xfs_trans_ail_[remove|delete]()

[Brian Foster <bfoster@redhat.com>]

Now that the functions and callers of
xfs_trans_ail_[remove|delete]() have been fixed up appropriately,
the only difference between the two is the shutdown behavior. There
are only a few callers of the _remove() variant, so make the
shutdown conditional on the parameter and combine the two functions.

Suggested-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
---
 fs/xfs/xfs_buf_item.c   |  2 +-
 fs/xfs/xfs_dquot.c      |  2 +-
 fs/xfs/xfs_dquot_item.c |  2 +-
 fs/xfs/xfs_inode_item.c |  2 +-
 fs/xfs/xfs_trans_ail.c  | 27 ++++++++-------------------
 fs/xfs/xfs_trans_priv.h | 17 -----------------
 6 files changed, 12 insertions(+), 40 deletions(-)

diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index 47c547aca1f1..9e75e8d6042e 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -558,7 +558,7 @@ xfs_buf_item_put(
 	 * state.
 	 */
 	if (aborted)
-		xfs_trans_ail_remove(lip);
+		xfs_trans_ail_delete(lip, 0);
 	xfs_buf_item_relse(bip->bli_buf);
 	return true;
 }
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 497a9dbef1c9..52e0f7245afc 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -1162,7 +1162,7 @@ xfs_qm_dqflush(
 
 out_abort:
 	dqp->dq_flags &= ~XFS_DQ_DIRTY;
-	xfs_trans_ail_remove(lip);
+	xfs_trans_ail_delete(lip, 0);
 	xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
 out_unlock:
 	xfs_dqfunlock(dqp);
diff --git a/fs/xfs/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c
index 8bd46810d5db..349c92d26570 100644
--- a/fs/xfs/xfs_dquot_item.c
+++ b/fs/xfs/xfs_dquot_item.c
@@ -343,7 +343,7 @@ xfs_qm_qoff_logitem_relse(
 	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_remove(lip);
+	xfs_trans_ail_delete(lip, 0);
 	kmem_free(lip->li_lv_shadow);
 	kmem_free(qoff);
 }
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index 0e449d0a3d5c..1a02058178d1 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -768,7 +768,7 @@ xfs_iflush_abort(
 	xfs_inode_log_item_t	*iip = ip->i_itemp;
 
 	if (iip) {
-		xfs_trans_ail_remove(&iip->ili_item);
+		xfs_trans_ail_delete(&iip->ili_item, 0);
 		iip->ili_logged = 0;
 		/*
 		 * Clear the ili_last_fields bits now that we know that the
diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
index cfba691664c7..aa6a911e5c96 100644
--- a/fs/xfs/xfs_trans_ail.c
+++ b/fs/xfs/xfs_trans_ail.c
@@ -842,25 +842,13 @@ xfs_ail_delete_one(
 }
 
 /**
- * Remove a log items from the AIL
+ * Remove a log item from the AIL.
  *
- * @xfs_trans_ail_delete_bulk takes an array of log items that all need to
- * removed from the AIL. The caller is already holding the AIL lock, and done
- * all the checks necessary to ensure the items passed in via @log_items are
- * ready for deletion. This includes checking that the items are in the AIL.
- *
- * For each log item to be removed, unlink it  from the AIL, clear the IN_AIL
- * flag from the item and reset the item's lsn to 0. If we remove the first
- * item in the AIL, update the log tail to match the new minimum LSN in the
- * AIL.
- *
- * This function will not drop the AIL lock until all items are removed from
- * the AIL to minimise the amount of lock traffic on the AIL. This does not
- * greatly increase the AIL hold time, but does significantly reduce the amount
- * of traffic on the lock, especially during IO completion.
- *
- * This function must be called with the AIL lock held.  The lock is dropped
- * before returning.
+ * For each log item to be removed, unlink it from the AIL, clear the IN_AIL
+ * flag from the item and reset the item's lsn to 0. If we remove the first item
+ * in the AIL, update the log tail to match the new minimum LSN in the AIL. If
+ * the item is not in the AIL, shut down if the caller has provided a shutdown
+ * type. Otherwise return quietly as this state is expected.
  */
 void
 xfs_trans_ail_delete(
@@ -874,7 +862,7 @@ xfs_trans_ail_delete(
 	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)) {
+		if (shutdown_type && !XFS_FORCED_SHUTDOWN(mp)) {
 			xfs_alert_tag(mp, XFS_PTAG_AILDELETE,
 	"%s: attempting to delete a log item that is not in the AIL",
 					__func__);
@@ -883,6 +871,7 @@ xfs_trans_ail_delete(
 		return;
 	}
 
+	/* xfs_ail_update_finish() drops the AIL lock */
 	tail_lsn = xfs_ail_delete_one(ailp, lip);
 	xfs_ail_update_finish(ailp, tail_lsn);
 }
diff --git a/fs/xfs/xfs_trans_priv.h b/fs/xfs/xfs_trans_priv.h
index ab0a82e90825..cc046d9557ae 100644
--- a/fs/xfs/xfs_trans_priv.h
+++ b/fs/xfs/xfs_trans_priv.h
@@ -96,23 +96,6 @@ 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_log_item *lip, int shutdown_type);
 
-static inline void
-xfs_trans_ail_remove(
-	struct xfs_log_item	*lip)
-{
-	struct xfs_ail		*ailp = lip->li_ailp;
-	xfs_lsn_t		tail_lsn;
-
-	spin_lock(&ailp->ail_lock);
-	/* 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);
 void			xfs_ail_push_all(struct xfs_ail *);
 void			xfs_ail_push_all_sync(struct xfs_ail *);
-- 
2.21.1