tree 75a8457c238807871a48be213abb719765901061
parent 13685a1654b65357fb34066a98ef40445f7820fc
author Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> 1244608721 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1245048442 +1000

ps3vram: Replace mutex by spinlock + bio_list

Remove the mutex serializing access to the cache.
Instead, queue up new requests on a bio_list if the driver is busy.

This improves sequential write performance by ca. 2%.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jim Paris <jim@jtan.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>