LU-3188 osc: shorten IO calling path

By using osc_io_unplug_aync() for osc_queue_sync_pages() to shorten
the IO calling path, to reduce the chance of stack overflow.

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Change-Id: I06112d9fb7b069d68c7945641e65d6430d0bb380
Reviewed-on: http://review.whamcloud.com/6191
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Keith Mannthey <kemannthey@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>

diff --git a/lustre/osc/osc_cache.c b/lustre/osc/osc_cache.c
index b898d93..e7bfc47 100644 (file)
--- a/lustre/osc/osc_cache.c
+++ b/lustre/osc/osc_cache.c
@@ -2668,7 +2668,7 @@ int osc_queue_sync_pages(const struct lu_env *env, struct osc_object *obj,
        }
        osc_object_unlock(obj);
 
-       osc_io_unplug(env, cli, obj, PDL_POLICY_ROUND);
+       osc_io_unplug_async(env, cli, obj);
        RETURN(0);
 }