tree 7fe2306a8dc2022ac7724b2d47629e38e3fb354b
parent 490b94be0282c3b67f56453628ff0aaae827a670
author shaohua.li@intel.com <shaohua.li@intel.com> 1304703272 -0600
committer Jens Axboe <jaxboe@fusionio.com> 1304703385 -0600

block: add a non-queueable flush flag

flush request isn't queueable in some drives. Add a flag to let driver
notify block layer about this. We can optimize flush performance with the
knowledge.

Stable: 2.6.39 only

Cc: stable@kernel.org
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>