From: Tejun Heo <tj@kernel.org>
To: Raz Ben-Yehuda <razb@bitband.com>
Cc: linux-ide@vger.kernel.org
Subject: Re: about TRIM/DISCARD support and barriers
Date: Sun, 30 Nov 2008 07:57:36 +0900 [thread overview]
Message-ID: <4931C8E0.3080404@kernel.org> (raw)
In-Reply-To: <83CA05F64804AF43B8F733C4ABDFAA51022D04B0@mail1.bitband.com>
hello,
Raz Ben-Yehuda wrote:
> Tejun Hello
> Is there a WIKI for SSD disk in Linux?
Not that I know of.
> I want to understand what is the rational for the OS intervention. Why
> and when you discard, fsck changes, why and how IO scheduling is
> changed...
FTL (flash translation layer) in SSDs can do better job if the OS
tells it which area is unused so that the SSD can just drop or
overwrite those regions.
--
tejun
prev parent reply other threads:[~2008-11-29 22:57 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-23 4:46 about TRIM/DISCARD support and barriers Tejun Heo
2008-11-23 7:11 ` Tejun Heo
2008-11-23 7:57 ` Tejun Heo
2008-11-24 5:40 ` Dongjun Shin
2008-11-24 5:45 ` Tejun Heo
2008-11-24 5:57 ` James Bottomley
2008-11-23 12:35 ` Matthew Wilcox
2008-11-23 13:39 ` David Woodhouse
2008-11-23 22:52 ` James Bottomley
2008-11-24 9:03 ` David Woodhouse
2008-11-24 18:42 ` James Bottomley
2008-11-24 18:52 ` David Woodhouse
2008-11-24 18:57 ` Jens Axboe
2008-11-24 19:08 ` James Bottomley
2008-11-25 9:16 ` Jens Axboe
2008-11-24 19:09 ` James Bottomley
2008-11-25 3:28 ` Matthew Wilcox
2008-11-25 9:15 ` Jens Axboe
2008-11-24 3:01 ` Theodore Tso
2008-11-28 13:21 ` Raz Ben-Yehuda
2008-11-29 22:57 ` Tejun Heo [this message]
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