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Author SHA1 Message Date
Sascha Hauer f79343dec4 block: remove unused read_start and read_done ops 
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-05-31 09:23:48 +02:00
Sascha Hauer e3a9e1fd62 block: reimplement caching 
The current caching layer only has a single buffer for
writing and reading. The FAT driver often accesses the
fat and then data again, which currently can't be cached.
Reimplement this with a list of cached chunks. The number
of chunks and their sizes are currently hardcoded, but
that could be easily made configurable.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2012-02-15 08:21:43 +01:00
Sascha Hauer 61f41e3c54 add block support 
This adds a simple block layer to barebox. Reading and writing
to block devices can be painfully slow without caching, so
add a simple caching layer here.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2011-04-11 15:57:51 +02:00