Re: [PATCH v21 2/5] ring-buffer: Introducing ring-buffer mapping functions

On Wed, Apr 24, 2024 at 10:55:54PM +0200, David Hildenbrand wrote: > On 24.04.24 22:31, Vincent Donnefort wrote: > > Hi David, > > > > Thanks for your quick response. > > > > On Wed, Apr 24, 2024 at 05:26:39PM +0200, David Hildenbrand wrote: > > > > > > I gave it some more thought, and I think w

Re: [PATCH v21 2/5] ring-buffer: Introducing ring-buffer mapping functions

On 24.04.24 22:31, Vincent Donnefort wrote: Hi David, Thanks for your quick response. On Wed, Apr 24, 2024 at 05:26:39PM +0200, David Hildenbrand wrote: I gave it some more thought, and I think we are still missing something (I wish PFNMAP/MIXEDMAP wouldn't be that hard). + +/* + * +-

Re: [PATCH v21 2/5] ring-buffer: Introducing ring-buffer mapping functions

Hi David, Thanks for your quick response. On Wed, Apr 24, 2024 at 05:26:39PM +0200, David Hildenbrand wrote: > > I gave it some more thought, and I think we are still missing something (I > wish PFNMAP/MIXEDMAP wouldn't be that hard). > > > + > > +/* > > + * +--+ pgoff == 0 > > +

Re: [PATCH v21 2/5] ring-buffer: Introducing ring-buffer mapping functions

I gave it some more thought, and I think we are still missing something (I wish PFNMAP/MIXEDMAP wouldn't be that hard). + +/* + * +--+ pgoff == 0 + * | meta page | + * +--+ pgoff == 1 + * | subbuffer 0 | + * | | + * +--+ pgo

[PATCH v21 2/5] ring-buffer: Introducing ring-buffer mapping functions

In preparation for allowing the user-space to map a ring-buffer, add a set of mapping functions: ring_buffer_{map,unmap}() And controls on the ring-buffer: ring_buffer_map_get_reader() /* swap reader and head */ Mapping the ring-buffer also involves: A unique ID for each subbuf of the r