linux-kernel - Re: RFC: 32-bit __data_len and REQ_DISCARD+REQ

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: <x49pozyljvs.fsf@segfault.boston.devel.redhat.com>
Date:	Wed, 28 Oct 2015 18:15:51 -0400
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Ulf Hansson <ulf.hansson@...aro.org>
Cc:	Grant Grundler <grundler@...omium.org>,
	Jens Axboe <axboe@...nel.dk>,
	"linux-mmc\@vger.kernel.org" <linux-mmc@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Gwendal Grignou <gwendal@...omium.org>
Subject: Re: RFC: 32-bit __data_len and REQ_DISCARD+REQ_SECURE

Ulf Hansson <ulf.hansson@...aro.org> writes:

> I am not sure if this issue is the same as been discussed earlier on
> the mmc list regarding "discard/erase".
>
> Anyway, there have been several attempts to fix bugs related to this.
> One of these discussion kind of pointed out a viable solution, but
> unfortunate no patches that adopts that solution have been posted yet.
>
> You might want to read up on this.
> https://www.mail-archive.com/linux-mmc@vger.kernel.org/msg23643.html
> http://linux-mmc.vger.kernel.narkive.com/Wp31G953/patch-mmc-core-don-t-return-1-for-max-discard
>
> So this is an old issue, which should have been fixed long long long time ago...

Thanks Ulf.  After reading all of the linked discussions, it's my
understanding that this is an emmc-specific issue that doesn't require
any block layer changes.  If that's wrong, please let me know.

Cheers,
Jeff
--
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/