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(parent: 13685a1) | patch
ps3vram: Replace mutex by spinlock + bio_list
authorGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Wed, 10 Jun 2009 04:38:41 +0000 (04:38 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Mon, 15 Jun 2009 06:47:22 +0000 (16:47 +1000)
commitfb89e89d0ff6142f0616eb8260ea89d6fd924982
tree75a8457c238807871a48be213abb719765901061tree | snapshot (tar.gz zip)
parent13685a1654b65357fb34066a98ef40445f7820fccommit | diff
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>
drivers/block/ps3vram.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)