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[JFFS2] Add LZO compression support.

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Add LZO1X compression/decompression support to jffs2.

LZO's interface doesn't entirely match that required by jffs2 so a
buffer and memcpy is unavoidable.

Signed-off-by: Richard Purdie <rpurdie@openedhand.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Richard Purdie 2007-07-10 10:28:36 +01:00 • committed by David Woodhouse
parent 8691a729a2
commit c799aca31b
6 changed files with 129 additions and 1 deletions
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1
include/linux/jffs2.h
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@ -46,6 +46,7 @@
#define JFFS2_COMPR_COPY 0x04
#define JFFS2_COMPR_DYNRUBIN 0x05
#define JFFS2_COMPR_ZLIB 0x06
#define JFFS2_COMPR_LZO 0x07
/* Compatibility flags. */
#define JFFS2_COMPAT_MASK 0xc000 /* What do to if an unknown nodetype is found */
#define JFFS2_NODE_ACCURATE 0x2000