Displaying 7 results from an estimated 7 matches for "iter_discard".
2019 Aug 05
2
[PATCH 00/12] block/bio, fs: convert put_page() to put_user_page*()
...on to bio_release_pages: a "from_gup"
>> parameter. Similar use as above.
>>
>> * Change the block layer, and several file systems, to use
>> put_user_page*().
>
> I think we can do this in a simple and better way. We have 5 ITER_*
> types. Of those ITER_DISCARD as the name suggests never uses pages, so
> we can skip handling it. ITER_PIPE is rejected ?n the direct I/O path,
> which leaves us with three.
>
Hi Christoph,
Are you working on anything like this? Or on the put_user_bvec() idea?
Please let me know, otherwise I'll go in and imple...
2019 Aug 05
2
[PATCH 00/12] block/bio, fs: convert put_page() to put_user_page*()
...on to bio_release_pages: a "from_gup"
>> parameter. Similar use as above.
>>
>> * Change the block layer, and several file systems, to use
>> put_user_page*().
>
> I think we can do this in a simple and better way. We have 5 ITER_*
> types. Of those ITER_DISCARD as the name suggests never uses pages, so
> we can skip handling it. ITER_PIPE is rejected ?n the direct I/O path,
> which leaves us with three.
>
Hi Christoph,
Are you working on anything like this? Or on the put_user_bvec() idea?
Please let me know, otherwise I'll go in and imple...
2019 Jul 24
0
[PATCH 00/12] block/bio, fs: convert put_page() to put_user_page*()
...in one more piece of information to bio_release_pages: a "from_gup"
> parameter. Similar use as above.
>
> * Change the block layer, and several file systems, to use
> put_user_page*().
I think we can do this in a simple and better way. We have 5 ITER_*
types. Of those ITER_DISCARD as the name suggests never uses pages, so
we can skip handling it. ITER_PIPE is rejected ?n the direct I/O path,
which leaves us with three.
Out of those ITER_BVEC needs a user page reference, so we want to call
put_user_page* on it. ITER_BVEC always already has page reference,
which means in th...
2019 Aug 07
0
[PATCH 00/12] block/bio, fs: convert put_page() to put_user_page*()
...om_gup"
> >> parameter. Similar use as above.
> >>
> >> * Change the block layer, and several file systems, to use
> >> put_user_page*().
> >
> > I think we can do this in a simple and better way. We have 5 ITER_*
> > types. Of those ITER_DISCARD as the name suggests never uses pages, so
> > we can skip handling it. ITER_PIPE is rejected ?n the direct I/O path,
> > which leaves us with three.
> >
>
> Hi Christoph,
>
> Are you working on anything like this?
I was hoping I could steer you towards it. But if...
2019 Sep 25
0
[PATCH] vhost: It's better to use size_t for the 3rd parameter of vhost_exceeds_weight()
...;len, ...) ->
> init_iov_iter() ->
> iov_iter_advance(iter, ...) // has 3 branches:
> pipe_advance() // has checked the size: if (unlikely(i->count < size)) size = i->count;
> iov_iter_is_discard() ... // no check.
Yes, but I don't think we use ITER_DISCARD.
Thanks
> iterate_and_advance() //has checked: if (unlikely(i->count < n)) n = i->count;
> return iov_iter_count(iter);
>
> -----Original Message-----
> From: Michael S. Tsirkin [mailto:mst at redhat.com]
> Sent: Monday, September 23, 2019 4:07 PM
> To: wa...
2019 Jul 24
20
[PATCH 00/12] block/bio, fs: convert put_page() to put_user_page*()
From: John Hubbard <jhubbard at nvidia.com>
Hi,
This is mostly Jerome's work, converting the block/bio and related areas
to call put_user_page*() instead of put_page(). Because I've changed
Jerome's patches, in some cases significantly, I'd like to get his
feedback before we actually leave him listed as the author (he might
want to disown some or all of these).
I added a
2019 Jul 24
20
[PATCH 00/12] block/bio, fs: convert put_page() to put_user_page*()
From: John Hubbard <jhubbard at nvidia.com>
Hi,
This is mostly Jerome's work, converting the block/bio and related areas
to call put_user_page*() instead of put_page(). Because I've changed
Jerome's patches, in some cases significantly, I'd like to get his
feedback before we actually leave him listed as the author (he might
want to disown some or all of these).
I added a