diff options
Diffstat (limited to 'backport/backport-include/linux/mm.h')
| -rw-r--r-- | backport/backport-include/linux/mm.h | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/backport/backport-include/linux/mm.h b/backport/backport-include/linux/mm.h index 6ee5c7d8..7e69b873 100644 --- a/backport/backport-include/linux/mm.h +++ b/backport/backport-include/linux/mm.h @@ -73,50 +73,6 @@ long backport_get_user_pages(unsigned long start, unsigned long nr_pages, #define FOLL_TRIED 0x800 /* a retry, previous pass started an IO */ #endif -#ifdef CPTCFG_BPAUTO_BUILD_FRAME_VECTOR -/* Container for pinned pfns / pages */ -struct frame_vector { - unsigned int nr_allocated; /* Number of frames we have space for */ - unsigned int nr_frames; /* Number of frames stored in ptrs array */ - bool got_ref; /* Did we pin pages by getting page ref? */ - bool is_pfns; /* Does array contain pages or pfns? */ - void *ptrs[0]; /* Array of pinned pfns / pages. Use - * pfns_vector_pages() or pfns_vector_pfns() - * for access */ -}; - -struct frame_vector *frame_vector_create(unsigned int nr_frames); -void frame_vector_destroy(struct frame_vector *vec); -int get_vaddr_frames(unsigned long start, unsigned int nr_pfns, - bool write, bool force, struct frame_vector *vec); -void put_vaddr_frames(struct frame_vector *vec); -int frame_vector_to_pages(struct frame_vector *vec); -void frame_vector_to_pfns(struct frame_vector *vec); - -static inline unsigned int frame_vector_count(struct frame_vector *vec) -{ - return vec->nr_frames; -} - -static inline struct page **frame_vector_pages(struct frame_vector *vec) -{ - if (vec->is_pfns) { - int err = frame_vector_to_pages(vec); - - if (err) - return ERR_PTR(err); - } - return (struct page **)(vec->ptrs); -} - -static inline unsigned long *frame_vector_pfns(struct frame_vector *vec) -{ - if (!vec->is_pfns) - frame_vector_to_pfns(vec); - return (unsigned long *)(vec->ptrs); -} -#endif - #if LINUX_VERSION_IS_LESS(4,1,9) && \ LINUX_VERSION_IS_GEQ(3,6,0) #define page_is_pfmemalloc LINUX_BACKPORT(page_is_pfmemalloc) |