From 268344664603706b6f156548f9d7482665222f87 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Fri, 14 Aug 2015 17:57:29 -0700 Subject: [PATCH] f2fs: reuse nids more aggressively If we can reuse nids as many as possible, we can mitigate producing obsolete node pages in the page cache. Reviewed-by: Chao Yu 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 6e10c2a08ec6..3cc32b8f8204 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 */