f2fs: introduce cp_lock to protect updating of ckpt_flags
This patch introduces spinlock to protect updating process of ckpt_flags
field in struct f2fs_checkpoint, it avoids incorrectly updating in race
condition.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: add __is_set_ckpt_flags likewise __set_ckpt_flags]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 2d23d7b..e78501c 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1801,7 +1801,7 @@
int type = CURSEG_HOT_DATA;
int err;
- if (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_COMPACT_SUM_FLAG)) {
+ if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) {
int npages = npages_for_summary_flush(sbi, true);
if (npages >= 2)
@@ -1898,7 +1898,7 @@
void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
{
- if (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_COMPACT_SUM_FLAG))
+ if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG))
write_compacted_summaries(sbi, start_blk);
else
write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA);