block: document blk_plug list access
authorShaohua Li <shaohua.li@intel.com>
Fri, 8 Jul 2011 06:19:21 +0000 (08:19 +0200)
committerJens Axboe <jaxboe@fusionio.com>
Fri, 8 Jul 2011 06:19:21 +0000 (08:19 +0200)
commit316cc67d5e03801a5ee4ac660a4dfe9e02aed475
treeddcac370cf4402127a9609cfe6bb86eb1ebb6c8d
parent55c022bbddb2c056b5dff1bd1b1758d31b6d64c9
block: document blk_plug list access

I'm often confused why not disable preempt when changing blk_plug list. It
would be better to add comments here in case others have the similar concerns.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
include/linux/blkdev.h