On Tue, 31 May 2011, Christoph Hellwig wrote:
> > (shmem_read_mapping_page_gfp or shmem_read_cache_page_gfp? Generally
> > the read_mapping_page functions use the mapping's ->readpage, and the
> > read_cache_page functions use the supplied filler, so I think
> > read_cache_page_gfp was slightly misnamed.)
>
> What about just shmem_read_page? It's not using the pagecache, so
> no need for the mapping or cache, and the _gfp really is just a hack
> because the old pagecache APIs didn't allow to pass the gfp flags.
> For a new API there's no need for that.
I am trying to mirror what's already there, and it's conceivable that
we'll find others who want converting from read_mapping_page() to
shmem_read_mapping_page(), so I'd rather keep the similar naming.
The _gfp() thing I'm not very keen on, but can't avoid it for i915.
If anyone else needs something here, it's likely to be without _gfp().
>
> > +static inline struct page *shmem_read_mapping_page(
> > + struct address_space *mapping, pgoff_t index)
> > +{
> > + return shmem_read_mapping_page_gfp(mapping, index,
> > + mapping_gfp_mask(mapping));
> > +}
>
> This really shouldn't be in pagemap.h. For now probably in shmem_fs.h
Okay, I can move it there, if I do the same for those shmem_...()
interfaces currently in linux/mm.h too.
Hugh
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxxx For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>