linux-kernel - Re: [PATCH v7 07/22] Replace the XIP page fault handler with the DAX page fault handler

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Message-ID: <20140409205111.GG5727@linux.intel.com>
Date:	Wed, 9 Apr 2014 16:51:11 -0400
From:	Matthew Wilcox <willy@...ux.intel.com>
To:	Jan Kara <jack@...e.cz>
Cc:	Matthew Wilcox <matthew.r.wilcox@...el.com>,
	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 07/22] Replace the XIP page fault handler with the DAX
 page fault handler

On Wed, Apr 09, 2014 at 12:27:58PM +0200, Jan Kara wrote:
> > +	if (unlikely(vmf->pgoff >= size)) {
> > +		mutex_unlock(&mapping->i_mmap_mutex);
> > +		goto sigbus;
>   You need to release the block you've got from the filesystem in case of
> error here an below.

What's the API to do that?  Call inode->i_op->setattr()?
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