linux-kernel - Re: [PATCH, RFC] xfs: batched discard support

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: <20090816135315.GA25251@infradead.org>
Date:	Sun, 16 Aug 2009 09:53:15 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Mark Lord <liml@....ca>
Cc:	Christoph Hellwig <hch@...radead.org>,
	linux-fsdevel@...r.kernel.org, jens.axboe@...cle.com,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	xfs@....sgi.com
Subject: Re: [PATCH, RFC] xfs: batched discard support

On Sun, Aug 16, 2009 at 09:00:35AM -0400, Mark Lord wrote:
> Okay, this gives me ENOSYS now --> discard/trim support is missing from
> the lower layers.

ENOSYS or EOPNOTSUPP?

> What other patches do I need to make this work?
>
> The latest from Matthew's discard tree (May 2009) don't appear to be sufficient,
> even after updating them for 2.6.31-rc6.

Hmm.  That was kinda the reason why I didn't want to post stuff yet.  In
current mainline only MTD implements the prepare_discard_fn, and we'll
need it implemented and working.  I think Matthews patches should be
sufficient, unless they have some ATA revision check to not issue the
TRIM for your device.

--
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/