commit 8161cb90893a3d6e4c84b288d0bd2ba5b1d7a1ed
author Jens Axboe <jens.axboe@oracle.com> Thu May 15 13:01:14 2008 +0200
committer Jens Axboe <jaxboe@fusionio.com> Tue Jun 22 12:31:52 2010 +0200
tree ea57a30760adafd16629037724af02560cd43905
parent 3a40bacde67c35d64126eec952bc88ca94fd7bc6

read-ahead: use plugging

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

mm/readahead.c

diff --git a/mm/readahead.c b/mm/readahead.c
index cbddc3e..443dd1b 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -112,6 +112,8 @@
 	unsigned page_idx;
 	int ret;
 
+	blk_plug_current();
+
 	if (mapping->a_ops->readpages) {
 		ret = mapping->a_ops->readpages(filp, mapping, pages, nr_pages);
 		/* Clean up the remaining pages */
@@ -129,7 +131,10 @@
 		page_cache_release(page);
 	}
 	ret = 0;
+
 out:
+	blk_unplug_current();
+
 	return ret;
 }