linux-kernel - [PATCH 2/6] ext2 balloc: reset windowsz when full

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Message-ID: <Pine.LNX.4.64.0611281740110.29701@blonde.wat.veritas.com>
Date:	Tue, 28 Nov 2006 17:40:50 +0000 (GMT)
From:	Hugh Dickins <hugh@...itas.com>
To:	Mingming Cao <cmm@...ibm.com>
cc:	Andrew Morton <akpm@...l.org>, Mel Gorman <mel@...net.ie>,
	"Martin J. Bligh" <mbligh@...igh.org>,
	linux-kernel@...r.kernel.org,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: [PATCH 2/6] ext2 balloc: reset windowsz when full

ext2_new_blocks should reset the reservation window size to 0 when squeezing
the last blocks out of an almost full filesystem, so the retry doesn't skip
any groups with less than half that free, reporting ENOSPC too soon.

Signed-off-by: Hugh Dickins <hugh@...itas.com>
---

 fs/ext2/balloc.c |    1 +
 1 file changed, 1 insertion(+)

--- 2.6.19-rc6-mm2/fs/ext2/balloc.c	2006-11-24 08:18:02.000000000 +0000
+++ linux/fs/ext2/balloc.c	2006-11-27 19:28:41.000000000 +0000
@@ -1292,6 +1292,7 @@ retry_alloc:
 	 */
 	if (my_rsv) {
 		my_rsv = NULL;
+		windowsz = 0;
 		group_no = goal_group;
 		goto retry_alloc;
 	}
-
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