linux-kernel - [PATCH 10/10] fs: make aio plug

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Date:	Sat, 22 Jan 2011 01:17:29 +0000
From:	Jens Axboe <jaxboe@...ionio.com>
To:	jaxboe@...ionio.com, linux-kernel@...r.kernel.org
Cc:	hch@...radead.org, Shaohua Li <shaohua.li@...el.com>
Subject: [PATCH 10/10] fs: make aio plug

From: Shaohua Li <shaohua.li@...el.com>

Signed-off-by: Shaohua Li <shaohua.li@...el.com>
Signed-off-by: Jens Axboe <jaxboe@...ionio.com>
---
 fs/aio.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/fs/aio.c b/fs/aio.c
index c5ea494..1476bed 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1660,6 +1660,7 @@ long do_io_submit(aio_context_t ctx_id, long nr,
 	long ret = 0;
 	int i;
 	struct hlist_head batch_hash[AIO_BATCH_HASH_SIZE] = { { 0, }, };
+	struct blk_plug plug;
 
 	if (unlikely(nr < 0))
 		return -EINVAL;
@@ -1676,6 +1677,8 @@ long do_io_submit(aio_context_t ctx_id, long nr,
 		return -EINVAL;
 	}
 
+	blk_start_plug(&plug);
+
 	/*
 	 * AKPM: should this return a partial result if some of the IOs were
 	 * successfully submitted?
@@ -1698,6 +1701,7 @@ long do_io_submit(aio_context_t ctx_id, long nr,
 		if (ret)
 			break;
 	}
+	blk_finish_plug(&plug);
 	aio_batch_free(batch_hash);
 
 	put_ioctx(ctx);
-- 
1.7.3.2.146.gca209

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