linux-kernel - Re: [PATCH 2/3] MEMSTICK: add support for legacy memorysticks

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] [day] [month] [year] [list]

Message-Id: <20100920182537.9e0920ad.akpm@linux-foundation.org>
Date:	Mon, 20 Sep 2010 18:25:37 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Alex Dubov <oakad@...oo.com>
Cc:	Maxim Levitsky <maximlevitsky@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] MEMSTICK: add support for legacy memorysticks

On Mon, 20 Sep 2010 18:16:03 -0700 (PDT) Alex Dubov <oakad@...oo.com> wrote:

> However, do you have a quick
> advice for a case, were idr_pre_get happens outside spin-locked section,
> as opposed to mutex one?

It sucks, but...

again:
	if (idr_pre_get(..., GFP_KERNEL) == NULL)
		return -ENOMEM;		/* We're really out-of-memory */
	spin_lock(lock);
	if (idr_get_new(...) == -EAGAIN) {
		spin_unlock(lock);
		goto again;		/* Someone stole our preallocation! */
	}
--
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/