linux-kernel - Re: [PATCH v4 12/27] cifs: set mapping error when page writeback fails in writepage or launder

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Date:   Wed, 10 May 2017 13:14:46 +0200
From:   Jan Kara <jack@...e.cz>
To:     Jeff Layton <jlayton@...hat.com>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-btrfs@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-cifs@...r.kernel.org, linux-nfs@...r.kernel.org,
        linux-mm@...ck.org, jfs-discussion@...ts.sourceforge.net,
        linux-xfs@...r.kernel.org, cluster-devel@...hat.com,
        linux-f2fs-devel@...ts.sourceforge.net,
        v9fs-developer@...ts.sourceforge.net, linux-nilfs@...r.kernel.org,
        linux-block@...r.kernel.org, dhowells@...hat.com,
        akpm@...ux-foundation.org, hch@...radead.org,
        ross.zwisler@...ux.intel.com, mawilcox@...rosoft.com,
        jack@...e.com, viro@...iv.linux.org.uk, corbet@....net,
        neilb@...e.de, clm@...com, tytso@....edu, axboe@...nel.dk,
        josef@...icpanda.com, hubcap@...ibond.com, rpeterso@...hat.com,
        bo.li.liu@...cle.com
Subject: Re: [PATCH v4 12/27] cifs: set mapping error when page writeback
 fails in writepage or launder_pages

On Tue 09-05-17 11:49:15, Jeff Layton wrote:
> Signed-off-by: Jeff Layton <jlayton@...hat.com>
> Reviewed-by: Christoph Hellwig <hch@....de>

Looks good to me. You can add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  fs/cifs/file.c | 12 +++++++-----
>  1 file changed, 7 insertions(+), 5 deletions(-)
> 
> diff --git a/fs/cifs/file.c b/fs/cifs/file.c
> index 21d404535739..0bee7f8d91ad 100644
> --- a/fs/cifs/file.c
> +++ b/fs/cifs/file.c
> @@ -2234,14 +2234,16 @@ cifs_writepage_locked(struct page *page, struct writeback_control *wbc)
>  	set_page_writeback(page);
>  retry_write:
>  	rc = cifs_partialpagewrite(page, 0, PAGE_SIZE);
> -	if (rc == -EAGAIN && wbc->sync_mode == WB_SYNC_ALL)
> -		goto retry_write;
> -	else if (rc == -EAGAIN)
> +	if (rc == -EAGAIN) {
> +		if (wbc->sync_mode == WB_SYNC_ALL)
> +			goto retry_write;
>  		redirty_page_for_writepage(wbc, page);
> -	else if (rc != 0)
> +	} else if (rc != 0) {
>  		SetPageError(page);
> -	else
> +		mapping_set_error(page->mapping, rc);
> +	} else {
>  		SetPageUptodate(page);
> +	}
>  	end_page_writeback(page);
>  	put_page(page);
>  	free_xid(xid);
> -- 
> 2.9.3
> 
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR