[dm-devel] calling dm_io
Kasatkin, Dmitry
dmitry.kasatkin at intel.com
Thu Nov 8 17:51:36 UTC 2012
On Thu, Nov 8, 2012 at 7:22 PM, Alasdair G Kergon <agk at redhat.com> wrote:
> On Thu, Nov 08, 2012 at 06:04:44PM +0200, Kasatkin, Dmitry wrote:
>> So it expects caller to initialize notify.fn, but in couple of places
>> it is not done when allocating on stack...
>
> As far as I can see it is initialised where it needs to be.
>
>> struct dm_io_request io_req = {
>> ....,
>> .notify.fn = NULL,
>> };
>
> (Struct members not listed explicitly are initialised according to the same
> rules used for initialising static variables. IOW a pointer is initialised
> to NULL.)
oh. indeed.
dm_bufio_issue_flush() uses REQ_FLUSH, but all other places in the
kernel use WRITE_FLUSH...
Should dm_bufio_issue_flush() also use WRITE_FLUSH?
- Dmitry
>
> Alasdair
>
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