[PATCH v2] xfs: revise function comment for xfs_trans_ail_delete

[yu kuai]

Since xfs_trans_ail_delete_bulk no longer exists, revising the comment
for new function xfs_trans_ail_delete.

Fix following warning:
make W=1 fs/xfs/xfs_trans_ail.o
fs/xfs/xfs_trans_ail.c:793: warning: Function parameter or member 
'ailp' not described in 'xfs_trans_ail_delete'
fs/xfs/xfs_trans_ail.c:793: warning: Function parameter or member
'lip' not described in 'xfs_trans_ail_delete'
fs/xfs/xfs_trans_ail.c:793: warning: Function parameter or member
'shutdown_type' not described in 'xfs_trans_ail_delete'

Fixes:27af1bbf5244("xfs: remove xfs_trans_ail_delete_bulk")
Signed-off-by: yu kuai <yukuai3@xxxxxxxxxx>
---
 fs/xfs/xfs_trans_ail.c | 27 +++++++++++----------------
 1 file changed, 11 insertions(+), 16 deletions(-)

diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
index 6ccfd75..6c43b66e 100644
--- a/fs/xfs/xfs_trans_ail.c
+++ b/fs/xfs/xfs_trans_ail.c
@@ -765,25 +765,20 @@ xfs_ail_delete_one(
 }
 
-/**
- * Remove a log items from the AIL
+/*
+ * xfs_trans_ail_delet - 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.
+ * @xfs_trans_ail_delete takes a log item that needs to be removed from the
+ * AIL. The caller is already holding the AIL lock, and done all the checks
+ * necessary to ensure the item passed in via @lip 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.
+ * For the log item to be removed, call xfs_ail_delete_one to 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.
+ * This function must be called with the AIL lock held. The lock will be
+ * dropped before returning.
  */
 void
 xfs_trans_ail_delete(
-- 
2.7.4