From: Arnd Bergmann <arnd@arndb.de>
To: Andreas Dilger <adilger@dilger.ca>
Cc: Andrei Warkentin <andreiw@motorola.com>,
linux-mmc@vger.kernel.org, linux-ext4@vger.kernel.org
Subject: Re: [RFC 4/5] MMC: Adjust unaligned write accesses.
Date: Mon, 21 Mar 2011 20:05:37 +0100 [thread overview]
Message-ID: <201103212005.37108.arnd@arndb.de> (raw)
In-Reply-To: <C0A67981-AF1A-40FF-91BA-93ECF6F72B58@dilger.ca>
On Monday 21 March 2011 19:03:09 Andreas Dilger wrote:
> Note that mballoc was specifically designed to handle allocation
> requests that are aligned on RAID stripe boundaries, so it should
> be able to handle this for MMC as well. What is needed is to tell
> the filesystem what the underlying alignment is. That can be done
> at format time with mke2fs or afterward with tune2fs by using the
> "-E stripe_width" option.
Ah, that sounds useful. So would I set the stripe_width to the
erase block size, and the block group size to a multiple of that?
Does this also work in (rare) cases where the erase block size is
not a power of two?
Arnd
next prev parent reply other threads:[~2011-03-21 19:05 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-10 0:54 Block quirks redux + Toshiba performance quirk Andrei Warkentin
2011-03-10 0:12 ` Andrei Warkentin
2011-03-10 0:54 ` [RFC 1/5] MMC: Extends card quicks with MMC/SD quirks matching the CID Andrei Warkentin
2011-03-10 0:54 ` [RFC 2/5] MMC: Allow function-specific quirks Andrei Warkentin
2011-03-10 15:09 ` Arnd Bergmann
2011-03-10 20:41 ` Andrei Warkentin
2011-03-10 21:55 ` Arnd Bergmann
2011-03-10 0:54 ` [RFC 3/5] MMC: Support for block quirks Andrei Warkentin
2011-03-10 0:54 ` [RFC 4/5] MMC: Adjust unaligned write accesses Andrei Warkentin
2011-03-10 16:05 ` Arnd Bergmann
2011-03-10 20:45 ` Andrei Warkentin
2011-03-10 21:54 ` Arnd Bergmann
2011-03-10 23:06 ` Andrei Warkentin
2011-03-11 10:23 ` Arnd Bergmann
2011-03-13 13:00 ` Andrei Warkentin
2011-03-13 14:54 ` Arnd Bergmann
2011-03-14 7:40 ` Andrei Warkentin
2011-03-19 11:09 ` Andrei Warkentin
2011-03-21 14:21 ` Arnd Bergmann
2011-03-21 14:41 ` Andrei Warkentin
2011-03-21 18:03 ` Andreas Dilger
2011-03-21 19:05 ` Arnd Bergmann [this message]
2011-03-21 23:58 ` Andreas Dilger
2011-03-22 13:56 ` Arnd Bergmann
2011-03-22 15:02 ` Andreas Dilger
2011-03-22 15:44 ` Arnd Bergmann
2011-03-10 0:54 ` [RFC 5/5] MMC: Toshiba eMMC - Split 8K-unaligned accesses Andrei Warkentin
2011-03-10 1:03 ` [RFC] MMC: Extends card quicks with MMC/SD quirks matching the CID Andrei Warkentin
-- strict thread matches above, loose matches on Subject: below --
2011-03-21 14:27 Fwd: Re: [RFC 4/5] MMC: Adjust unaligned write accesses Arnd Bergmann
2011-03-21 23:45 ` Andreas Dilger
2011-03-22 7:18 ` Andrei Warkentin
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