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From: Christian Brauner <christian@brauner.io>
To: Oleg Nesterov <oleg@redhat.com>
Cc: viro@zeniv.linux.org.uk, linux-kernel@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org,
	torvalds@linux-foundation.org, fweimer@redhat.com,
	jannh@google.com, tglx@linutronix.de, arnd@arndb.de,
	shuah@kernel.org, dhowells@redhat.com, tkjos@android.com,
	ldv@altlinux.org, miklos@szeredi.hu, linux-alpha@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
	linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org,
	linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
	sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org,
	linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org,
	x86@kernel.org
Subject: Re: [PATCH v2 1/2] open: add close_range()
Date: Thu, 23 May 2019 18:34:41 +0200	[thread overview]
Message-ID: <20190523163439.56ucetlt6duvnhdj@brauner.io> (raw)
In-Reply-To: <20190523162004.GC23070@redhat.com>

On Thu, May 23, 2019 at 06:20:05PM +0200, Oleg Nesterov wrote:
> On 05/23, Christian Brauner wrote:
> >
> > +int __close_range(struct files_struct *files, unsigned fd, unsigned max_fd)
> > +{
> > +	unsigned int cur_max;
> > +
> > +	if (fd > max_fd)
> > +		return -EINVAL;
> > +
> > +	rcu_read_lock();
> > +	cur_max = files_fdtable(files)->max_fds;
> > +	rcu_read_unlock();
> > +
> > +	/* cap to last valid index into fdtable */
> > +	max_fd = max(max_fd, (cur_max - 1));
>                  ^^^
> 
> Hmm. min() ?

Yes, thanks! Massive brainf*rt on my end, sorry.

Christian

  reply	other threads:[~2019-05-23 16:34 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-23 15:47 [PATCH v2 0/2] close_range() Christian Brauner
2019-05-23 15:47 ` [PATCH v2 1/2] open: add close_range() Christian Brauner
2019-05-23 16:20   ` Oleg Nesterov
2019-05-23 16:34     ` Christian Brauner [this message]
2019-05-26 20:20   ` Szabolcs Nagy
2019-05-23 15:47 ` [PATCH v2 2/2] tests: add close_range() tests Christian Brauner
2019-05-28  2:33   ` Michael Ellerman
2019-05-28  9:57     ` Christian Brauner

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