From d71b05d2c5eea0fa9bb665d8e418c48603420c4b Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Mon, 6 Mar 2017 11:59:56 -0800 Subject: [PATCH] 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 Signed-off-by: Jaegeuk Kim --- fs/f2fs/segment.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index dd8eaedb25ef..a9526729948d 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1302,6 +1302,12 @@ 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