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f2fs: fix to check available space of CP area correctly in update_ckpt_flags()

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commit b702c83e2eaa2fa2d72e957c55c0321535cc8b9f upstream.

Otherwise, nat_bit area may be persisted across boundary of CP area during
nat_bit rebuilding.

Fixes: 94c821fb286b ("f2fs: rebuild nat_bits during umount")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chao Yu 2021-12-12 20:28:12 +08:00 committed by Greg Kroah-Hartman
parent 0789b9b349
commit 2d7d3b6da8
1 changed files with 2 additions and 2 deletions
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4
fs/f2fs/checkpoint.c
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@ -1305,8 +1305,8 @@ static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
unsigned long flags;
if (cpc->reason & CP_UMOUNT) {
if (le32_to_cpu(ckpt->cp_pack_total_block_count) >
sbi->blocks_per_seg - NM_I(sbi)->nat_bits_blocks) {
if (le32_to_cpu(ckpt->cp_pack_total_block_count) +
NM_I(sbi)->nat_bits_blocks > sbi->blocks_per_seg) {
clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
f2fs_notice(sbi, "Disable nat_bits due to no space");
} else if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG) &&