Re: [PATCH v3 0/3] xen-blk(back|front): Let users disable persistent grants

2020-09-22 Thread SeongJae Park
On Tue, 22 Sep 2020 16:45:56 +0200 "Roger Pau Monné" wrote: > On Tue, Sep 22, 2020 at 04:15:46PM +0200, SeongJae Park wrote: > > From: SeongJae Park > > > > Persistent grants feature provides high scalability. On some small > > systems, however, it could incur data copy overheads[1] and thus

Re: [PATCH v3 0/3] xen-blk(back|front): Let users disable persistent grants

2020-09-22 Thread Roger Pau Monné
On Tue, Sep 22, 2020 at 04:15:46PM +0200, SeongJae Park wrote: > From: SeongJae Park > > Persistent grants feature provides high scalability. On some small > systems, however, it could incur data copy overheads[1] and thus it is > required to be disabled. But, there is no option to disable it.

[PATCH v3 0/3] xen-blk(back|front): Let users disable persistent grants

2020-09-22 Thread SeongJae Park
From: SeongJae Park Persistent grants feature provides high scalability. On some small systems, however, it could incur data copy overheads[1] and thus it is required to be disabled. But, there is no option to disable it. For the reason, this commit adds module parameters for disabling of the