linux-kernel - Re: [PATCH 1/6] ipc/sem.c: further whitespace cleanups

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]

Date:	Mon, 12 May 2014 19:50:39 +0200
From:	Manfred Spraul <manfred@...orfullife.com>
To:	Davidlohr Bueso <davidlohr@...com>
CC:	Davidlohr Bueso <davidlohr.bueso@...com>,
	Michael Kerrisk <mtk.manpages@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>, 1vier1@....de
Subject: Re: [PATCH 1/6] ipc/sem.c: further whitespace cleanups

Hi Davidlohr,

On 05/12/2014 01:34 AM, Davidlohr Bueso wrote:
> On Sat, 2014-05-10 at 12:03 +0200, Manfred Spraul wrote:
>> Somehow <TAB>$ was overlooked in the last round of whitespace
>> cleanups.
>> Do that now, before making further changes.
> No big deal, but this patch could easily be included in the the second
> patch instead on its own. Thanks.
The patch series you see is the third approach to fix the issue:
- do not store anything, call perform_atomic_semop() in count_semncnt()
   Really cool, no impact at all for semop() - but nasty.
   A sleeping operation could fail suddenly due to -ERANGE.

- store semncnt and semzcnt in struct sem:
   Increase in perform_atomic_semop(), decrease in unlink_queue().

- Now: store the pointer to the blocking op.

That's why the series got so fine-grained...

--
     Manfred


--
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/