linux-kernel - [PATCH 01/10] staging/lustre/osc: shorten IO calling path

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Date:	Wed, 25 Mar 2015 21:53:17 -0400
From:	green@...uxhacker.ru
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org,
	Andreas Dilger <andreas.dilger@...el.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Bobi Jam <bobijam.xu@...el.com>,
	Bob Glossman <bob.glossman@...el.com>,
	Oleg Drokin <oleg.drokin@...el.com>
Subject: [PATCH 01/10] staging/lustre/osc: shorten IO calling path

From: Bobi Jam <bobijam.xu@...el.com>

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@...el.com>
Signed-off-by: Bob Glossman <bob.glossman@...el.com
Reviewed-on: http://review.whamcloud.com/11612
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3188
Reviewed-by: Jinshan Xiong <jinshan.xiong@...el.com>
Reviewed-by: Niu Yawei <yawei.niu@...el.com>
Signed-off-by: Oleg Drokin <oleg.drokin@...el.com>
---
 drivers/staging/lustre/lustre/osc/osc_cache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lustre/osc/osc_cache.c b/drivers/staging/lustre/lustre/osc/osc_cache.c
index 7022ed4..d44b3d4 100644
--- a/drivers/staging/lustre/lustre/osc/osc_cache.c
+++ b/drivers/staging/lustre/lustre/osc/osc_cache.c
@@ -2613,7 +2613,7 @@ 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;
 }
 
-- 
2.1.0

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