On 05/25, Wenjie Qi wrote:
> Compressed data writes are accounted as F2FS_WB_CP_DATA because they
> write compressed pages through fio->compressed_page. Their end_io path
> should therefore have the same checkpoint-stop behavior as ordinary
> F2FS_WB_CP_DATA writes.
>
> However, f2fs_compress_write_end_io() only records -EIO in the inode
> mapping when the bio fails. The filesystem can keep checkpointing after
> that failure, so a later checkpoint may persist metadata that points to
> compressed data blocks whose writeback failed.
>
> Stop checkpointing with STOP_CP_REASON_WRITE_FAIL for failed compressed
> F2FS_WB_CP_DATA writes, matching the ordinary data write end_io path.
>
> Fixes: 4c8ff7095bef ("f2fs: support data compression")
> Cc: [email protected]
> Signed-off-by: Wenjie Qi <[email protected]>
> ---
> fs/f2fs/compress.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
> index caf522d667d6..9b1501004456 100644
> --- a/fs/f2fs/compress.c
> +++ b/fs/f2fs/compress.c
> @@ -1488,8 +1488,11 @@ void f2fs_compress_write_end_io(struct bio *bio,
> struct folio *folio)
> f2fs_is_compressed_page(folio));
> int i;
>
> - if (unlikely(bio->bi_status != BLK_STS_OK))
> + if (unlikely(bio->bi_status != BLK_STS_OK)) {
> mapping_set_error(cic->inode->i_mapping, -EIO);
> + if (type == F2FS_WB_CP_DATA)
It turns out the type should not be F2FS_WB_CP_DATA.
> + f2fs_stop_checkpoint(sbi, true,
> STOP_CP_REASON_WRITE_FAIL);
> + }
>
> f2fs_compress_free_page(page);
>
> --
> 2.43.0
>
>
>
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