On Fri, Jul 21, 2023 at 02:38:45PM +0800, Mark-PK Tsai wrote:
> > On Mon, Jul 17, 2023 at 09:57:28AM +0800, Mark-PK Tsai wrote:
> > > > On Sun, Jul 16, 2023, 11:16 AM Greg KH
> > > > wrote:
> > > >
> > > > > On Thu, Jul 13, 2023 at 01:58:37PM +0800, Mark-PK Tsai wrote:
> > > > > > From: Peter Ko
On Thu, Jul 20, 2023 at 09:55:22AM +0200, Martin Steigerwald wrote:
>
> I thought that nowadays a cache flush would be (almost) a no-op in the
> case the storage receiving it is backed by such reliability measures.
> I.e. that the hardware just says "I am ready" when having the I/O
> request in
On Wed, 19 Jul 2023, Christoph Hellwig wrote:
> > +static void brd_free_page_rcu(struct rcu_head *head)
> > +{
> > + struct page *page = container_of(head, struct page, rcu_head);
> > + __free_page(page);
>
> Nit: missing empty line here. Although I see no point in the local
> variable an
On Thu, 20 Jul 2023, Chaitanya Kulkarni wrote:
> > Index: linux-2.6/drivers/block/brd.c
> > ===
> > --- linux-2.6.orig/drivers/block/brd.c
> > +++ linux-2.6/drivers/block/brd.c
> > @@ -272,7 +272,8 @@ out:
> >
> > void brd_do_
This is a new version of the brd discard patches.
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This patch extends the rcu regions, so that lookup followed by a read or
write of a page is done inside rcu read lock. This is needed for the
following patch that enables discard.
Signed-off-by: Mikulas Patocka
---
drivers/block/brd.c |8
1 file changed, 8 insertions(+)
Index: lin
This patch implements REQ_OP_WRITE_ZEROES on brd. Write zeroes will free
the pages just like discard, but the difference is that it writes zeroes
to the preceding and following page if the range is not aligned on page
boundary.
Signed-off-by: Mikulas Patocka
---
drivers/block/brd.c | 78 +
This patch implements discard in the brd driver. We use RCU to free the
page, so that if there are any concurrent readers or writes, they won't
touch the page after it is freed.
Calling "call_rcu" for each page is inefficient, so we attempt to batch
multiple pages to a single "call_rcu" call.
Not
On 7/21/23 7:48?AM, Mikulas Patocka wrote:
> This is a new version of the brd discard patches.
Can you please:
1) Ensure that your postings thread properly, it's all separate emails
and the patches don't nest under the cover letter parent.
2) Include a changelog. What changed since v1?
--
J
On Fri, 21 Jul 2023, Jens Axboe wrote:
> On 7/21/23 7:48?AM, Mikulas Patocka wrote:
> > This is a new version of the brd discard patches.
>
> Can you please:
>
> 1) Ensure that your postings thread properly, it's all separate emails
>and the patches don't nest under the cover letter paren
On Tue, Jul 18, 2023 at 11:51 AM Mike Snitzer wrote:
>
> But the long-standing dependency on VDO's work-queue data
> struct is still lingering (drivers/md/dm-vdo/work-queue.c). At a
> minimum we need to work toward pinning down _exactly_ why that is, and
> I think the best way to answer that is b
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