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read-ahead: use plugging

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Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Jens Axboe
2010-04-19 10:04:38 +02:00
parent 55602dd66f
commit 5b417b1873
1 changed files with 6 additions and 0 deletions
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6
mm/readahead.c
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@@ -109,9 +109,12 @@ EXPORT_SYMBOL(read_cache_pages);
static int read_pages(struct address_space *mapping, struct file *filp,
struct list_head *pages, unsigned nr_pages)
{
struct blk_plug plug;
unsigned page_idx;
int ret;
blk_start_plug(&plug);
if (mapping->a_ops->readpages) {
ret = mapping->a_ops->readpages(filp, mapping, pages, nr_pages);
/* Clean up the remaining pages */
@@ -129,7 +132,10 @@ static int read_pages(struct address_space *mapping, struct file *filp,
page_cache_release(page);
}
ret = 0;
out:
blk_finish_plug(&plug);
return ret;
}