linux-kernel - Re: linux-next: build failure after merge of the block tree

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Message-ID: <20200526143630.7e7fbc79@canb.auug.org.au>
Date:   Tue, 26 May 2020 14:36:30 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     David Sterba <dsterba@...e.cz>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Goldwyn Rodrigues <rgoldwyn@...e.com>,
        Johannes Thumshirn <jthumshirn@...e.de>,
        Christoph Hellwig <hch@....de>
Subject: Re: linux-next: build failure after merge of the block tree

Hi all,

On Mon, 25 May 2020 13:03:44 -0600 Jens Axboe <axboe@...nel.dk> wrote:
>
> On 5/24/20 11:08 PM, Stephen Rothwell wrote:
> > 
> > After merging the block tree, today's linux-next build (arm
> > multi_v7_defconfig) failed like this:
> > 
> > mm/filemap.c: In function 'generic_file_buffered_read':
> > mm/filemap.c:2075:9: error: 'written' undeclared (first use in this function); did you mean 'writeb'?
> >  2075 |     if (written) {
> >       |         ^~~~~~~
> >       |         writeb
> > 
> > Caused by commit
> > 
> >   23d513106fd8 ("mm: support async buffered reads in generic_file_buffered_read()")
> > 
> > from the block tree interacting with commit
> > 
> >   6e66f10f2cac ("fs: export generic_file_buffered_read()")
> > 
> > from the btrfs tree.
> > 
> > [Aside: that btrfs tree commit talks about "correct the comments and variable
> >     names", but changes "written" to "copied" in the function definition
> >     but to "already_read" in the header file declaration ...]
> > 
> > I ave applied the following merge fix patch:  
> 
> Looks like a frivolous change... Thanks for fixing this up Stephen.

The variable name change has been removed from the btrfs tree.

-- 
Cheers,
Stephen Rothwell

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