Displaying 5 results from an estimated 5 matches for "iomap_dio_zero".
2019 Jul 29
2
[PATCH 03/12] block: bio_release_pages: use flags arg instead of bool
...> > because it's not desirable have calls of the form:
>
> All pages releases by bio_release_pages should come from
> get_get_user_pages, so I don't really see the point here.
No they do not all comes from GUP for see various callers
of bio_check_pages_dirty() for instance iomap_dio_zero()
I have carefully tracked down all this and i did not do
anyconvertion just for the fun of it :)
Cheers,
J?r?me
2019 Jul 29
2
[PATCH 03/12] block: bio_release_pages: use flags arg instead of bool
...> > because it's not desirable have calls of the form:
>
> All pages releases by bio_release_pages should come from
> get_get_user_pages, so I don't really see the point here.
No they do not all comes from GUP for see various callers
of bio_check_pages_dirty() for instance iomap_dio_zero()
I have carefully tracked down all this and i did not do
anyconvertion just for the fun of it :)
Cheers,
J?r?me
2019 Jul 30
0
[PATCH 03/12] block: bio_release_pages: use flags arg instead of bool
...2019 at 04:57:21PM -0400, Jerome Glisse wrote:
> > All pages releases by bio_release_pages should come from
> > get_get_user_pages, so I don't really see the point here.
>
> No they do not all comes from GUP for see various callers
> of bio_check_pages_dirty() for instance iomap_dio_zero()
>
> I have carefully tracked down all this and i did not do
> anyconvertion just for the fun of it :)
Well, the point is _should_ not necessarily do. iomap_dio_zero adds the
ZERO_PAGE, which we by definition don't need to refcount. So we can
mark this bio BIO_NO_PAGE_REF safely a...
2019 Jul 30
1
[PATCH 03/12] block: bio_release_pages: use flags arg instead of bool
...Jerome Glisse wrote:
> > > All pages releases by bio_release_pages should come from
> > > get_get_user_pages, so I don't really see the point here.
> >
> > No they do not all comes from GUP for see various callers
> > of bio_check_pages_dirty() for instance iomap_dio_zero()
> >
> > I have carefully tracked down all this and i did not do
> > anyconvertion just for the fun of it :)
>
> Well, the point is _should_ not necessarily do. iomap_dio_zero adds the
> ZERO_PAGE, which we by definition don't need to refcount. So we can
> mar...
2019 Jul 24
1
[PATCH 03/12] block: bio_release_pages: use flags arg instead of bool
From: John Hubbard <jhubbard at nvidia.com>
In commit d241a95f3514 ("block: optionally mark pages dirty in
bio_release_pages"), new "bool mark_dirty" argument was added to
bio_release_pages.
In upcoming work, another bool argument (to indicate that the pages came
from get_user_pages) is going to be added. That's one bool too many,
because it's not desirable have