3 #include <linux/pagemap.h>
4 #include <linux/highmem.h>
8 int ceph_pagelist_release(struct ceph_pagelist *pl)
11 kunmap(pl->mapped_tail);
12 while (!list_empty(&pl->head)) {
13 struct page *page = list_first_entry(&pl->head, struct page,
21 static int ceph_pagelist_addpage(struct ceph_pagelist *pl)
23 struct page *page = alloc_page(GFP_NOFS);
26 pl->room += PAGE_SIZE;
27 list_add_tail(&page->lru, &pl->head);
29 kunmap(pl->mapped_tail);
30 pl->mapped_tail = kmap(page);
34 int ceph_pagelist_append(struct ceph_pagelist *pl, void *buf, size_t len)
36 while (pl->room < len) {
37 size_t bit = pl->room;
40 memcpy(pl->mapped_tail + (pl->length & ~PAGE_CACHE_MASK),
46 ret = ceph_pagelist_addpage(pl);
51 memcpy(pl->mapped_tail + (pl->length & ~PAGE_CACHE_MASK), buf, len);