From: Yunlei He <heyunlei@huawei.com>
Date: Wed, 7 Mar 2018 08:22:50 +0000 (+0800)
Subject: f2fs: Don't overwrite all types of node to keep node chain
X-Git-Tag: v4.19~1289^2~18
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5d7881cadf64277c1e212721073eaabfade12f66;p=platform%2Fkernel%2Flinux-rpi.git

f2fs: Don't overwrite all types of node to keep node chain

Currently, we enable node SSR by default, and mixed
different types of node segment to do SSR more intensively.
Although reuse warm node is not allowed, warm node chain
will be destroyed by errors introduced by other types
node chain. So we'd better forbid reusing all types
of node to keep warm node chain.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index f61c77b..570e02d 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1862,7 +1862,7 @@ static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del)
 			sbi->discard_blks--;
 
 		/* don't overwrite by SSR to keep node chain */
-		if (se->type == CURSEG_WARM_NODE) {
+		if (IS_NODESEG(se->type)) {
 			if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map))
 				se->ckpt_valid_blocks++;
 		}