linux-kernel - [PATCH] fix page_alloc for larger I/O segments (improved)

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Date:	Thu, 13 Dec 2007 19:46:49 -0500
From:	Mark Lord <liml@....ca>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	James.Bottomley@...senPartnership.com, jens.axboe@...cle.com,
	lkml@....ca, matthew@....cx, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-mm@...ck.org, mel@....ul.ie
Subject: [PATCH] fix page_alloc for larger I/O segments (improved)


"Improved version", more similar to the 2.6.23 code:

Fix page allocator to give better chance of larger contiguous segments (again).

Signed-off-by: Mark Lord <mlord@...ox.com
---

--- old/mm/page_alloc.c	2007-12-13 19:25:15.000000000 -0500
+++ linux-2.6/mm/page_alloc.c	2007-12-13 19:43:07.000000000 -0500
@@ -760,7 +760,7 @@
 		struct page *page = __rmqueue(zone, order, migratetype);
 		if (unlikely(page == NULL))
 			break;
-		list_add(&page->lru, list);
+		list_add_tail(&page->lru, list);
 		set_page_private(page, migratetype);
 	}
 	spin_unlock(&zone->lock);
--
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