From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751988AbeB1FI3 (ORCPT ); Wed, 28 Feb 2018 00:08:29 -0500 Received: from mail.kernel.org ([198.145.29.99]:37584 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750868AbeB1FI2 (ORCPT ); Wed, 28 Feb 2018 00:08:28 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ADA0C21795 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=jaegeuk@kernel.org From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim Subject: [PATCH] f2fs: do gc in greedy mode for whole range if gc_urgent mode is set Date: Tue, 27 Feb 2018 21:08:26 -0800 Message-Id: <20180228050826.83137-1-jaegeuk@kernel.org> X-Mailer: git-send-email 2.15.0.531.g2ccb3012c9-goog Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Otherwise, f2fs conducts GC on 8GB range only based on slow cost-benefit. Signed-off-by: Jaegeuk Kim --- fs/f2fs/gc.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index bc9420ce2275..bfb7a4a3a929 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -162,12 +162,17 @@ static int select_gc_type(struct f2fs_gc_kthread *gc_th, int gc_type) { int gc_mode = (gc_type == BG_GC) ? GC_CB : GC_GREEDY; - if (gc_th && gc_th->gc_idle) { + if (!gc_th) + return gc_mode; + + if (gc_th->gc_idle) { if (gc_th->gc_idle == 1) gc_mode = GC_CB; else if (gc_th->gc_idle == 2) gc_mode = GC_GREEDY; } + if (gc_th->gc_urgent) + gc_mode = GC_GREEDY; return gc_mode; } @@ -189,7 +194,9 @@ static void select_policy(struct f2fs_sb_info *sbi, int gc_type, } /* we need to check every dirty segments in the FG_GC case */ - if (gc_type != FG_GC && p->max_search > sbi->max_victim_search) + if (gc_type != FG_GC && + (sbi->gc_thread && !sbi->gc_thread->gc_urgent) && + p->max_search > sbi->max_victim_search) p->max_search = sbi->max_victim_search; /* let's select beginning hot/small space first in no_heap mode*/ -- 2.15.0.531.g2ccb3012c9-goog