tree 551aa110ea3ef7519d7a5ea444ac9c9640de4234
parent b657d7e632e0bc40e5e231332be39d69b2f1a0bb
author Gu Zheng <guz.fnst@cn.fujitsu.com> 1416798322 +0800
committer Jens Axboe <axboe@fb.com> 1416841484 -0700

blk: introduce generic io stat accounting help function

Many block drivers accounting io stat based on bio (e.g. NVMe...),
the blk_account_io_start/end() which is based on request
does not make sense to them, so here we introduce the similar help
function named generic_start/end_io_acct base on raw sectors, and it can
simplify some driver's open io accounting code.

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jens Axboe <axboe@fb.com>