Lines Matching refs:brd
54 static struct page *brd_lookup_page(struct brd_device *brd, sector_t sector) in brd_lookup_page() argument
72 page = radix_tree_lookup(&brd->brd_pages, idx); in brd_lookup_page()
83 static int brd_insert_page(struct brd_device *brd, sector_t sector, gfp_t gfp) in brd_insert_page() argument
89 page = brd_lookup_page(brd, sector); in brd_insert_page()
102 spin_lock(&brd->brd_lock); in brd_insert_page()
105 if (radix_tree_insert(&brd->brd_pages, idx, page)) { in brd_insert_page()
107 page = radix_tree_lookup(&brd->brd_pages, idx); in brd_insert_page()
113 brd->brd_nr_pages++; in brd_insert_page()
115 spin_unlock(&brd->brd_lock); in brd_insert_page()
126 static void brd_free_pages(struct brd_device *brd) in brd_free_pages() argument
135 nr_pages = radix_tree_gang_lookup(&brd->brd_pages, in brd_free_pages()
143 ret = radix_tree_delete(&brd->brd_pages, pos); in brd_free_pages()
167 static int copy_to_brd_setup(struct brd_device *brd, sector_t sector, size_t n, in copy_to_brd_setup() argument
175 ret = brd_insert_page(brd, sector, gfp); in copy_to_brd_setup()
180 ret = brd_insert_page(brd, sector, gfp); in copy_to_brd_setup()
188 static void copy_to_brd(struct brd_device *brd, const void *src, in copy_to_brd() argument
197 page = brd_lookup_page(brd, sector); in copy_to_brd()
208 page = brd_lookup_page(brd, sector); in copy_to_brd()
220 static void copy_from_brd(void *dst, struct brd_device *brd, in copy_from_brd() argument
229 page = brd_lookup_page(brd, sector); in copy_from_brd()
241 page = brd_lookup_page(brd, sector); in copy_from_brd()
254 static int brd_do_bvec(struct brd_device *brd, struct page *page, in brd_do_bvec() argument
268 err = copy_to_brd_setup(brd, sector, len, gfp); in brd_do_bvec()
275 copy_from_brd(mem + off, brd, sector, len); in brd_do_bvec()
279 copy_to_brd(brd, mem + off, sector, len); in brd_do_bvec()
289 struct brd_device *brd = bio->bi_bdev->bd_disk->private_data; in brd_submit_bio() local
302 err = brd_do_bvec(brd, bvec.bv_page, len, bvec.bv_offset, in brd_submit_bio()
361 struct brd_device *brd; in brd_alloc() local
366 list_for_each_entry(brd, &brd_devices, brd_list) in brd_alloc()
367 if (brd->brd_number == i) in brd_alloc()
369 brd = kzalloc(sizeof(*brd), GFP_KERNEL); in brd_alloc()
370 if (!brd) in brd_alloc()
372 brd->brd_number = i; in brd_alloc()
373 list_add_tail(&brd->brd_list, &brd_devices); in brd_alloc()
375 spin_lock_init(&brd->brd_lock); in brd_alloc()
376 INIT_RADIX_TREE(&brd->brd_pages, GFP_ATOMIC); in brd_alloc()
381 &brd->brd_nr_pages); in brd_alloc()
383 disk = brd->brd_disk = blk_alloc_disk(NUMA_NO_NODE); in brd_alloc()
391 disk->private_data = brd; in brd_alloc()
418 list_del(&brd->brd_list); in brd_alloc()
419 kfree(brd); in brd_alloc()
430 struct brd_device *brd, *next; in brd_cleanup() local
434 list_for_each_entry_safe(brd, next, &brd_devices, brd_list) { in brd_cleanup()
435 del_gendisk(brd->brd_disk); in brd_cleanup()
436 put_disk(brd->brd_disk); in brd_cleanup()
437 brd_free_pages(brd); in brd_cleanup()
438 list_del(&brd->brd_list); in brd_cleanup()
439 kfree(brd); in brd_cleanup()