On Thu, Jul 16, 2015 at 11:16:45AM +0800, Ming Lei wrote:
> Percpu refcount is the perfect match for partition's case,
> and the conversion is quite straight.
>
> With the convertion, one pair of atomic inc/dec can be saved
> for accounting block I/O, which is run in hot path of block I/O.
>
>
On Thu, Jul 16, 2015 at 11:16:45AM +0800, Ming Lei wrote:
Percpu refcount is the perfect match for partition's case,
and the conversion is quite straight.
With the convertion, one pair of atomic inc/dec can be saved
for accounting block I/O, which is run in hot path of block I/O.
Percpu refcount is the perfect match for partition's case,
and the conversion is quite straight.
With the convertion, one pair of atomic inc/dec can be saved
for accounting block I/O, which is run in hot path of block I/O.
Signed-off-by: Ming Lei
---
block/genhd.c | 6 +-
Percpu refcount is the perfect match for partition's case,
and the conversion is quite straight.
With the convertion, one pair of atomic inc/dec can be saved
for accounting block I/O, which is run in hot path of block I/O.
Signed-off-by: Ming Lei tom.leim...@gmail.com
---
block/genhd.c
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