From: Detlev Zundel <dzu@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/6] mtd: add writebufsize field to mtd_info struct
Date: Thu, 27 Jan 2011 17:18:28 +0100 [thread overview]
Message-ID: <m2ipxaxquj.fsf@ohwell.denx.de> (raw)
In-Reply-To: <1295540225-11083-1-git-send-email-holger.brunck@keymile.com> (Holger Brunck's message of "Thu, 20 Jan 2011 17:17:00 +0100")
Hi Stefan,
do you have any comment on this series? I delegated the patches to you
in patchwork already :) No seriously, the patches look sane and are in
accordance to what is done in Linux....
> This field will be used to indicate the write buffer size
> of the MTD device. UBI will set it's minimal I/O unit size
> (min_io_size) to the indicated write buffer size. By this
> change we intend to fix failed recovery of UBIFS partitions
> we currently observe on NOR flash when mounting the partition
> after unclean unmount.
>
> Currently the min_io_size is set to mtd->writesize (which is 1
> byte for NOR flash). But flash programming is often done from
> prepared write buffer containing multiple bytes and is performed
> in one programming operation which could be interrupted by a power
> cut or a system reset causing corrupted (partially written) areas
> in a flash sector. Knowing the size of potentially corrupted areas
> UBIFS scanning and recovery algorithms are able to perform
> successful recovery.
>
> Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Thanks
Detlev
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DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
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next prev parent reply other threads:[~2011-01-27 16:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-20 16:17 [U-Boot] [PATCH 1/6] mtd: add writebufsize field to mtd_info struct Holger Brunck
2011-01-20 16:17 ` [U-Boot] [PATCH 2/6] cfi_mtd: add writebufsize initialization Holger Brunck
2011-01-20 16:17 ` [U-Boot] [PATCH 3/6] mtd, nand: add mtd->writebufsize initialization Holger Brunck
2011-01-20 16:17 ` [U-Boot] [PATCH 4/6] mtd, onenand: add mtd writebufsize initialization Holger Brunck
2011-01-20 16:17 ` [U-Boot] [PATCH 5/6] mtd: initialize writebufsize in the MTD object of a partition Holger Brunck
2011-01-20 16:17 ` [U-Boot] [PATCH 6/6] UBI: use mtd->writebufsize to set minimal I/O unit size Holger Brunck
2011-01-27 16:18 ` Detlev Zundel [this message]
2011-02-01 8:26 ` [U-Boot] [PATCH 1/6] mtd: add writebufsize field to mtd_info struct Holger Brunck
2011-02-01 9:28 ` Stefan Roese
2011-02-01 12:18 ` Holger Brunck
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