On Mon, Aug 15, 2022 at 11:48:29AM +0800, Sun Ke wrote:
> If erofs_fscache_alloc_request fail and then goto out, it will return 0.
> it should return a negative error code instead of 0.
>
> Fixes: d435d53228dd ("erofs: change to use asynchronous io for fscache readpage/readahead")
> Signed-off-by: Sun Ke <sunke32@xxxxxxxxxx>
Thanks for the catch! Looks good to me,
Reviewed-by: Gao Xiang <hsiangkao@xxxxxxxxxxxxxxxxx>
Thanks,
Gao Xiang
> ---
> fs/erofs/fscache.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c
> index 8e01d89c3319..b5fd9d71e67f 100644
> --- a/fs/erofs/fscache.c
> +++ b/fs/erofs/fscache.c
> @@ -222,8 +222,10 @@ static int erofs_fscache_meta_read_folio(struct file *data, struct folio *folio)
>
> rreq = erofs_fscache_alloc_request(folio_mapping(folio),
> folio_pos(folio), folio_size(folio));
> - if (IS_ERR(rreq))
> + if (IS_ERR(rreq)) {
> + ret = PTR_ERR(rreq);
> goto out;
> + }
>
> return erofs_fscache_read_folios_async(mdev.m_fscache->cookie,
> rreq, mdev.m_pa);
> @@ -301,8 +303,10 @@ static int erofs_fscache_read_folio(struct file *file, struct folio *folio)
>
> rreq = erofs_fscache_alloc_request(folio_mapping(folio),
> folio_pos(folio), folio_size(folio));
> - if (IS_ERR(rreq))
> + if (IS_ERR(rreq)) {
> + ret = PTR_ERR(rreq);
> goto out_unlock;
> + }
>
> pstart = mdev.m_pa + (pos - map.m_la);
> return erofs_fscache_read_folios_async(mdev.m_fscache->cookie,
> --
> 2.31.1
