blk: introduce generic io stat accounting help function

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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>

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Gu Zheng 2014-11-24 11:05:22 +08:00 • committed by Jens Axboe

parent b657d7e632

commit 394ffa503b

2 changed files with 33 additions and 0 deletions

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5

include/linux/bio.h

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