2 #include <linux/pagemap.h>
3 #include <linux/highmem.h>
7 int ceph_pagelist_release(struct ceph_pagelist *pl)
10 kunmap(pl->mapped_tail);
11 while (!list_empty(&pl->head)) {
12 struct page *page = list_first_entry(&pl->head, struct page,
20 static int ceph_pagelist_addpage(struct ceph_pagelist *pl)
22 struct page *page = alloc_page(GFP_NOFS);
25 pl->room += PAGE_SIZE;
26 list_add_tail(&page->lru, &pl->head);
28 kunmap(pl->mapped_tail);
29 pl->mapped_tail = kmap(page);
33 int ceph_pagelist_append(struct ceph_pagelist *pl, void *buf, size_t len)
35 while (pl->room < len) {
36 size_t bit = pl->room;
39 memcpy(pl->mapped_tail + (pl->length & ~PAGE_CACHE_MASK),
45 ret = ceph_pagelist_addpage(pl);
50 memcpy(pl->mapped_tail + (pl->length & ~PAGE_CACHE_MASK), buf, len);