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Message-ID: <1262909913.2659.47.camel@localhost>
Date:	Thu, 07 Jan 2010 19:18:33 -0500
From:	Trond Myklebust <trond.myklebust@....uio.no>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Sage Weil <sage@...dream.net>,
	Wu Fengguang <fengguang.wu@...el.com>
Subject: Re: linux-next: nfs/ceph tree build failure

On Fri, 2010-01-08 at 11:11 +1100, Stephen Rothwell wrote: 
> Hi all,
> 
> Today's linux-next build (x86_64 allmodconfig) failed like this:
> 
> fs/ceph/addr.c: In function 'ceph_set_page_dirty':
> fs/ceph/addr.c:105: error: 'BDI_RECLAIMABLE' undeclared (first use in this function)
> 
> Commit 69f0302c4bd28846c3251e25976a2336cd6a6e6f ("VM: Split out the
> accounting of unstable writes from BDI_RECLAIMABLE") from the nfs tree
> interacts with commit 1d3576fd10f0d7a104204267b81cf84a07028dad ("ceph:
> address space operations") from the ceph tree.
> 
> I applied the following patch for today (I am not sure it is correct) and
> will keep it as a merge fixup as necessary.
> 
> -- 
> Cheers,
> Stephen Rothwell                    sfr@...b.auug.org.au
> 
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Fri, 8 Jan 2010 11:04:27 +1100
> Subject: [PATCH] ceph: update for BDI_RECLAIMABLE change
> 
> Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> ---
>  fs/ceph/addr.c |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
> index bf53581..eab46b0 100644
> --- a/fs/ceph/addr.c
> +++ b/fs/ceph/addr.c
> @@ -101,8 +101,7 @@ static int ceph_set_page_dirty(struct page *page)
>  
>  		if (mapping_cap_account_dirty(mapping)) {
>  			__inc_zone_page_state(page, NR_FILE_DIRTY);
> -			__inc_bdi_stat(mapping->backing_dev_info,
> -					BDI_RECLAIMABLE);
> +			__inc_bdi_stat(mapping->backing_dev_info, BDI_DIRTY);
>  			task_io_account_write(PAGE_CACHE_SIZE);
>  		}
>  		radix_tree_tag_set(&mapping->page_tree,

The patch itself looks correct to me.

How would you like me to proceed? Should I revert the VM changes from
the NFS linux-next tree, or would you be OK with keeping the above patch
for now?

Cheers
  Trond

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