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")
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
---
fs/f2fs/segment.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 2ae36d04d03e..684b869e1861 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1177,6 +1177,12 @@ 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
--
2.11.0
