linux-ext4 - Re: [PATCH v3 09/20] 9p: set mapping error when writeback fails in launder

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Message-ID: <20170424155755.GJ23988@quack2.suse.cz>
Date:   Mon, 24 Apr 2017 17:57:55 +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-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, osd-dev@...n-osd.org,
        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
Subject: Re: [PATCH v3 09/20] 9p: set mapping error when writeback fails in
 launder_page

On Mon 24-04-17 09:22:48, Jeff Layton wrote:
> launder_page is just writeback under the page lock. We still need to
> mark the mapping for errors there when they occur.
> 
> Signed-off-by: Jeff Layton <jlayton@...hat.com>

Looks good. You can add:

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

								Honza

> ---
>  fs/9p/vfs_addr.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
> index adaf6f6dd858..7af6e6501698 100644
> --- a/fs/9p/vfs_addr.c
> +++ b/fs/9p/vfs_addr.c
> @@ -223,8 +223,11 @@ static int v9fs_launder_page(struct page *page)
>  	v9fs_fscache_wait_on_page_write(inode, page);
>  	if (clear_page_dirty_for_io(page)) {
>  		retval = v9fs_vfs_writepage_locked(page);
> -		if (retval)
> +		if (retval) {
> +			if (retval != -EAGAIN)
> +				mapping_set_error(page->mapping, retval);
>  			return retval;
> +		}
>  	}
>  	return 0;
>  }
> -- 
> 2.9.3
> 
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR