linux-kernel - Re: shmem: convert to using splice instead of sendfile()

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Message-Id: <20070710184347.037b6b3e.akpm@linux-foundation.org>
Date:	Tue, 10 Jul 2007 18:43:47 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: shmem: convert to using splice instead of sendfile()

On Tue, 10 Jul 2007 23:00:59 GMT Linux Kernel Mailing List <linux-kernel@...r.kernel.org> wrote:

> +static int shmem_readpage(struct file *file, struct page *page)
> +{
> +	struct inode *inode = page->mapping->host;
> +	int error = shmem_getpage(inode, page->index, &page, SGP_CACHE, NULL);
> +	unlock_page(page);
> +	return error;
> +}

Worried.  shmem_getpage() does

done:
	if (*pagep != filepage) {
		unlock_page(filepage);
		*pagep = filepage;
	}
	return 0;

so we end up unlocking an unlocked page?
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