Re: [f2fs-dev] [PATCH 3/3] f2fs: fix false alarm on invalid block address

Chao Yu
2024-04-11T09:08:53Z

On 2024/4/10 4:34, Jaegeuk Kim wrote:
> f2fs_ra_meta_pages can try to read ahead on invalid block address which is
> not the corruption case.

In which case we will read ahead invalid meta pages? recovery w/ META_POR?

Thanks,

>
> Fixes: 31f85ccc84b8 ("f2fs: unify the error handling of f2fs_is_valid_blkaddr")
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> ---
> fs/f2fs/checkpoint.c | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
> index eac698b8dd38..b01320502624 100644
> --- a/fs/f2fs/checkpoint.c
> +++ b/fs/f2fs/checkpoint.c
> @@ -179,22 +179,22 @@ static bool __f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
> break;
> case META_SIT:
> if (unlikely(blkaddr >= SIT_BLK_CNT(sbi)))
> - goto err;
> + goto check_only;
> break;
> case META_SSA:
> if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) ||
> blkaddr < SM_I(sbi)->ssa_blkaddr))
> - goto err;
> + goto check_only;
> break;
> case META_CP:
> if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr ||
> blkaddr < __start_cp_addr(sbi)))
> - goto err;
> + goto check_only;
> break;
> case META_POR:
> if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
> blkaddr < MAIN_BLKADDR(sbi)))
> - goto err;
> + goto check_only;
> break;
> case DATA_GENERIC:
> case DATA_GENERIC_ENHANCE:
> @@ -228,6 +228,7 @@ static bool __f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
> return true;
> err:
> f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
> +check_only:
> return false;
> }
>