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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20070711062021.GF4587@kernel.dk>
Date:	Wed, 11 Jul 2007 08:20:22 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, hugh@...itas.com
Subject: Re: shmem: convert to using splice instead of sendfile()

On Tue, Jul 10 2007, Andrew Morton wrote:
> 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?

It certainly looks like it - Hugh?

-- 
Jens Axboe

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/