read-ahead: use plugging (5b417b18) · Commits · e / devices / android_kernel_teracube_2e

mm/readahead.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}