writeback: use RCU to protect bdi_list
authorJens Axboe <jens.axboe@oracle.com>
Mon, 14 Sep 2009 11:12:40 +0000 (13:12 +0200)
committerJens Axboe <jens.axboe@oracle.com>
Wed, 16 Sep 2009 13:18:51 +0000 (15:18 +0200)
commitcfc4ba5365449cb6b5c9f68d755a142f17da1e47
tree08770de9bb0e658f2e65abd4d10187b3e9f6bb1b
parentf11fcae8401a3175f528e2f7917362645d570111
writeback: use RCU to protect bdi_list

Now that bdi_writeback_all() no longer handles integrity writeback,
it doesn't have to block anymore. This means that we can switch
bdi_list reader side protection to RCU.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
fs/fs-writeback.c
include/linux/backing-dev.h
mm/backing-dev.c
mm/page-writeback.c