From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.136]:52799 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758306AbcFHRYx (ORCPT ); Wed, 8 Jun 2016 13:24:53 -0400 From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim Subject: [PATCH 4/7] f2fs: skip clean segment for gc Date: Wed, 8 Jun 2016 10:24:41 -0700 Message-Id: <20160608172444.60371-4-jaegeuk@kernel.org> In-Reply-To: <20160608172444.60371-1-jaegeuk@kernel.org> References: <20160608172444.60371-1-jaegeuk@kernel.org> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: If a segment in a section is clean or prefreed, we don't need to get its summary and do gc. Signed-off-by: Jaegeuk Kim --- fs/f2fs/gc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 67fd285..e1d274c 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -795,6 +795,10 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, } for (segno = start_segno; segno < end_segno; segno++) { + + if (get_valid_blocks(sbi, segno, 1) == 0) + continue; + /* find segment summary of victim */ sum_page = find_get_page(META_MAPPING(sbi), GET_SUM_BLOCK(sbi, segno)); -- 2.8.3