linux-kernel - Re: [PATCH 06/22] ocfs2: drop vmtruncate

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Date:	Sat, 13 Oct 2012 12:19:51 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Marco Stornelli <marco.stornelli@...il.com>
Cc:	Al Viro <viro@...IV.linux.org.uk>, Mark Fasheh <mfasheh@...e.com>,
	Joel Becker <jlbec@...lplan.org>, ocfs2-devel@....oracle.com,
	linux-kernel@...r.kernel.org,
	Linux FS Devel <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH 06/22] ocfs2: drop vmtruncate

>  	if ((attr->ia_valid & ATTR_SIZE) &&
>  	    attr->ia_size != i_size_read(inode)) {
> -		status = vmtruncate(inode, attr->ia_size);
> +		status = inode_newsize_ok(inode, attr->ia_size);
>  		if (status) {
>  			mlog_errno(status);
>  			goto bail_commit;
>  		}
> +		truncate_setsize(inode, attr->ia_size);

ocfs2 already calls inode_newsize_ok earlier during ocfs2_setattr,
and there's an XXX comment just above the vmtruncate call about
how ocfs2 hacks around this.  I suspect you just want a plain
truncate_setsize here and remove the comment above it, but I'd
like to have the ocfs2 folks confirm that.

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