From: Andrew Victor <andrew@sanpeople.com>
Date: Wed, 9 Feb 2005 09:17:45 +0000 (+0000)
Subject: [JFFS2] Add support for JFFS2-on-Dataflash devices.
X-Git-Tag: v2.6.13-rc3~93^2~108
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8f15fd55f9bf266139b10850947e19c4e3f4e9b7;p=pandora-kernel.git

[JFFS2] Add support for JFFS2-on-Dataflash devices.

For Dataflash, can_mark_obsolete = false and the NAND write buffering
code (wbuf.c) is used.

Since the DataFlash chip will automatically erase pages when writing,
the cleanmarkers are not needed - so cleanmarker_oob = false and
cleanmarker_size = 0

DataFlash page-sizes are not a power of two (they're multiples of 528
bytes).  The SECTOR_ADDR macro (added in the previous core patch) is
replaced with a (slower) div/mod version if CONFIG_JFFS2_FS_DATAFLASH is
selected.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

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