On Thu, Jun 25, 2020 at 12:31:22PM +0100, Matthew Wilcox (Oracle) wrote:
> Similar to memalloc_noio() and memalloc_nofs(), memalloc_nowait()
> guarantees we will not sleep to reclaim memory. Use it to simplify
> dm-bufio's allocations.
>
> Signed-off-by: Matthew Wilcox (Oracle)
> ---
> drivers/
On Wed, Sep 23, 2020 at 08:39:02PM -0400, Mike Snitzer wrote:
> On Thu, Jun 25 2020 at 7:31am -0400,
> Matthew Wilcox (Oracle) wrote:
>
> > Similar to memalloc_noio() and memalloc_nofs(), memalloc_nowait()
> > guarantees we will not sleep to reclaim memory. Use it to simplify
> > dm-bufio's all
On Thu, Jun 25 2020 at 7:31am -0400,
Matthew Wilcox (Oracle) wrote:
> Similar to memalloc_noio() and memalloc_nofs(), memalloc_nowait()
> guarantees we will not sleep to reclaim memory. Use it to simplify
> dm-bufio's allocations.
>
> Signed-off-by: Matthew Wilcox (Oracle)
> ---
> drivers/md
On Wed, 1 Jul 2020 05:13:16 +0100
Matthew Wilcox wrote:
> > > -It turned out though that above approach has led to
> > > -abuses when the restricted gfp mask is used "just in case" without a
> > > -deeper consideration which leads to problems because an excessive use
> > > -of GFP_NOFS/GFP_NOIO c
On Wed, Jul 01, 2020 at 07:53:46AM +0200, Michal Hocko wrote:
> On Wed 01-07-20 05:12:03, Matthew Wilcox wrote:
> > On Tue, Jun 30, 2020 at 08:34:36AM +0200, Michal Hocko wrote:
> > > On Mon 29-06-20 22:28:30, Matthew Wilcox wrote:
> > > [...]
> > > > The documentation is hard to add a new case to,
On Wed 01-07-20 05:12:03, Matthew Wilcox wrote:
> On Tue, Jun 30, 2020 at 08:34:36AM +0200, Michal Hocko wrote:
> > On Mon 29-06-20 22:28:30, Matthew Wilcox wrote:
> > [...]
> > > The documentation is hard to add a new case to, so I rewrote it. What
> > > do you think? (Obviously I'll split this
On Tue, Jun 30, 2020 at 08:34:36AM +0200, Michal Hocko wrote:
> On Mon 29-06-20 22:28:30, Matthew Wilcox wrote:
> [...]
> > The documentation is hard to add a new case to, so I rewrote it. What
> > do you think? (Obviously I'll split this out differently for submission;
> > this is just what I ha
On Mon 29-06-20 22:28:30, Matthew Wilcox wrote:
[...]
> The documentation is hard to add a new case to, so I rewrote it. What
> do you think? (Obviously I'll split this out differently for submission;
> this is just what I have in my tree right now).
I am fine with your changes. Few notes below.
On June 29, 2020 3:52:31 PM GMT+03:00, Michal Hocko wrote:
>On Mon 29-06-20 13:18:16, Matthew Wilcox wrote:
>> On Mon, Jun 29, 2020 at 08:08:51AM +0300, Mike Rapoport wrote:
>> > > @@ -886,8 +868,12 @@ static struct dm_buffer
>*__alloc_buffer_wait_no_callback(struct dm_bufio_client
>> > >
On Thu, Jun 25, 2020 at 12:31:22PM +0100, Matthew Wilcox (Oracle) wrote:
> Similar to memalloc_noio() and memalloc_nofs(), memalloc_nowait()
> guarantees we will not sleep to reclaim memory. Use it to simplify
> dm-bufio's allocations.
>
> Signed-off-by: Matthew Wilcox (Oracle)
> ---
> drivers/
On Mon, Jun 29, 2020 at 04:45:14PM +0300, Mike Rapoport wrote:
>
>
> On June 29, 2020 3:52:31 PM GMT+03:00, Michal Hocko wrote:
> >On Mon 29-06-20 13:18:16, Matthew Wilcox wrote:
> >> On Mon, Jun 29, 2020 at 08:08:51AM +0300, Mike Rapoport wrote:
> >> > > @@ -886,8 +868,12 @@ static struct dm_bu
On Mon 29-06-20 13:18:16, Matthew Wilcox wrote:
> On Mon, Jun 29, 2020 at 08:08:51AM +0300, Mike Rapoport wrote:
> > > @@ -886,8 +868,12 @@ static struct dm_buffer
> > > *__alloc_buffer_wait_no_callback(struct dm_bufio_client
> > > return NULL;
> > >
> > > if (dm_bufi
On Mon, Jun 29, 2020 at 08:08:51AM +0300, Mike Rapoport wrote:
> > @@ -886,8 +868,12 @@ static struct dm_buffer
> > *__alloc_buffer_wait_no_callback(struct dm_bufio_client
> > return NULL;
> >
> > if (dm_bufio_cache_size_latch != 1 && !tried_noio_alloc) {
> > +
Hi "Matthew,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on tip/sched/core]
[also build test ERROR on dm/for-next linus/master v5.8-rc2]
[cannot apply to xfs-linux/for-next next-20200625]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And whe
Hi "Matthew,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on tip/sched/core]
[also build test ERROR on dm/for-next linus/master v5.8-rc2]
[cannot apply to xfs-linux/for-next next-20200625]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And whe
On Thu 25-06-20 14:10:55, Matthew Wilcox wrote:
> On Thu, Jun 25, 2020 at 02:40:17PM +0200, Michal Hocko wrote:
> > On Thu 25-06-20 12:31:22, Matthew Wilcox wrote:
> > > Similar to memalloc_noio() and memalloc_nofs(), memalloc_nowait()
> > > guarantees we will not sleep to reclaim memory. Use it t
On Thu, Jun 25, 2020 at 02:40:17PM +0200, Michal Hocko wrote:
> On Thu 25-06-20 12:31:22, Matthew Wilcox wrote:
> > Similar to memalloc_noio() and memalloc_nofs(), memalloc_nowait()
> > guarantees we will not sleep to reclaim memory. Use it to simplify
> > dm-bufio's allocations.
>
> memalloc_now
On Thu 25-06-20 12:31:22, Matthew Wilcox wrote:
> Similar to memalloc_noio() and memalloc_nofs(), memalloc_nowait()
> guarantees we will not sleep to reclaim memory. Use it to simplify
> dm-bufio's allocations.
memalloc_nowait is a good idea! I suspect the primary usecase would be
vmalloc.
> Sig
Similar to memalloc_noio() and memalloc_nofs(), memalloc_nowait()
guarantees we will not sleep to reclaim memory. Use it to simplify
dm-bufio's allocations.
Signed-off-by: Matthew Wilcox (Oracle)
---
drivers/md/dm-bufio.c| 30 --
include/linux/sched.h| 1 +
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