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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>
This commit is contained in:
Jaegeuk Kim 2017-03-06 11:59:56 -08:00
parent 0aeb6e0b46
commit d71b05d2c5
1 changed files with 6 additions and 0 deletions
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6
fs/f2fs/segment.c
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@ -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