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authorJaegeuk Kim <jaegeuk@kernel.org>2017-03-06 11:59:56 -0800
committerJaegeuk Kim <jaegeuk@kernel.org>2017-03-20 10:00:14 -0400
commit720037f939fa50fc3531035ae61b4cf4b0ff35e5 (patch)
treea5e9234e256fa4ed35bfc67a79b5040ee8194a0b
parent97da3854c526d3a6ee05c849c96e48d21527606c (diff)
f2fs: don't overwrite node block by SSR
This patch fixes that SSR can overwrite previous warm node block consisting of a node chain since the last checkpoint. Fixes: 5b6c6be2d878 ("f2fs: use SSR for warm node as well") Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
-rw-r--r--fs/f2fs/segment.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 4bd7a8b19332..29ef7088c558 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1163,6 +1163,12 @@ static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del)
if (f2fs_discard_en(sbi) &&
!f2fs_test_and_set_bit(offset, se->discard_map))
sbi->discard_blks--;
+
+ /* don't overwrite by SSR to keep node chain */
+ if (se->type == CURSEG_WARM_NODE) {
+ if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map))
+ se->ckpt_valid_blocks++;
+ }
} else {
if (!f2fs_test_and_clear_bit(offset, se->cur_valid_map)) {
#ifdef CONFIG_F2FS_CHECK_FS