Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752220AbbHRIqe (ORCPT ); Tue, 18 Aug 2015 04:46:34 -0400 Received: from mail.kernel.org ([198.145.29.136]:46451 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750892AbbHRIqc (ORCPT ); Tue, 18 Aug 2015 04:46:32 -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 1/5] f2fs: reuse nids more aggressively Date: Tue, 18 Aug 2015 01:46:25 -0700 Message-Id: <1439887589-35190-1-git-send-email-jaegeuk@kernel.org> X-Mailer: git-send-email 2.1.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 991 Lines: 31 If we can reuse nids as many as possible, we can mitigate producing obsolete node pages in the page cache. Signed-off-by: Jaegeuk Kim --- fs/f2fs/node.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 6e10c2a..3cc32b8 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -306,6 +306,10 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { unsigned char version = nat_get_version(e); nat_set_version(e, inc_node_version(version)); + + /* in order to reuse the nid */ + if (nm_i->next_scan_nid > ni->nid) + nm_i->next_scan_nid = ni->nid; } /* change address */ -- 2.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/