From: Mingming Cao Subject: [PATCH 7/12] ext4 balloc: reset windowsz when full Date: Tue, 28 Nov 2006 20:14:55 -0800 Message-ID: <1164773695.4341.41.camel@localhost.localdomain> References: <20061114014125.dd315fff.akpm@osdl.org> <20061114184919.GA16020@skynet.ie> <20061114113120.d4c22b02.akpm@osdl.org> <20061115214534.72e6f2e8.akpm@osdl.org> <455C0B6F.7000201@us.ibm.com> <20061115232228.afaf42f2.akpm@osdl.org> <1163666960.4310.40.camel@localhost.localdomain> <20061116011351.1401a00f.akpm@osdl.org> <1163708116.3737.12.camel@dyn9047017103.beaverton.ibm.com> <20061116132724.1882b122.akpm@osdl.org> <1164073652.20900.34.camel@dyn9047017103.beaverton.ibm.com> <1164156193.3804.48.camel@dyn9047017103.beaverton.ibm.com> Reply-To: cmm@us.ibm.com Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: Andrew Morton , Mel Gorman , "Martin J. Bligh" , linux-kernel@vger.kernel.org, "linux-ext4@vger.kernel.org" Return-path: Received: from e3.ny.us.ibm.com ([32.97.182.143]:8670 "EHLO e3.ny.us.ibm.com") by vger.kernel.org with ESMTP id S1758781AbWK2EPJ (ORCPT ); Tue, 28 Nov 2006 23:15:09 -0500 To: Hugh Dickins In-Reply-To: Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org ------------------------------------------------------ Subject: ext2 balloc: reset windowsz when full From: Hugh Dickins 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. ------------------------------------------------------ Sync up reservation fix from ext2 in ext4 Signed-off-by: Mingming Cao --- --- linux-2.6.19-rc5-cmm/fs/ext4/balloc.c | 1 + 1 file changed, 1 insertion(+) diff -puN fs/ext4/balloc.c~ext4_reset_windowsz_in_full_fs fs/ext4/balloc.c --- linux-2.6.19-rc5/fs/ext4/balloc.c~ext4_reset_windowsz_in_full_fs 2006-11-28 19:37:01.000000000 -0800 +++ linux-2.6.19-rc5-cmm/fs/ext4/balloc.c 2006-11-28 19:37:01.000000000 -0800 @@ -1566,6 +1566,7 @@ retry_alloc: */ if (my_rsv) { my_rsv = NULL; + windowsz = 0; group_no = goal_group; goto retry_alloc; } _