linux-kernel - Re: [RFC] get_write_access()/deny_write_access() without inode->i

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: <20110620170305.GW11521@ZenIV.linux.org.uk>
Date:	Mon, 20 Jun 2011 18:03:05 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-arch@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC] get_write_access()/deny_write_access() without
 inode->i_lock

On Mon, Jun 20, 2011 at 05:42:11PM +0100, Al Viro wrote:

> BTW, atomic_add_unless/atomic_inc_not_zero is done as read/cmpxchg on
> everything I've checked, including alpha and sparc.  I suspect that
> it's seriously suboptimal there...

Actually, on sparc it's probably fine.  alpha, OTOH, probably ought to switch
to something similar to what ppc is doing...
--
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/