[PATCH 7/7] mm: return an ERR_PTR from __filemap_get_folio

[Ryusuke Konishi]

On Sat, Jan 21, 2023 at 3:59 PM Christoph Hellwig wrote:
>
> Instead of returning NULL for all errors, distinguish between:
>
>  - no entry found and not asked to allocated (-ENOENT)
>  - failed to allocate memory (-ENOMEM)
>  - would block (-EAGAIN)
>
> so that callers don't have to guess the error based on the passed
> in flags.
>
> Also pass through the error through the direct callers:
> filemap_get_folio, filemap_lock_folio filemap_grab_folio
> and filemap_get_incore_folio.
>
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> ---

For

>  fs/nilfs2/page.c         |  6 +++---

Acked-by: Ryusuke Konishi <konishi.ryusuke at gmail.com>

Thanks,
Ryusuke Konishi