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Diffstat (limited to 'net/sunrpc/xdr.c')
-rw-r--r--net/sunrpc/xdr.c75
1 files changed, 0 insertions, 75 deletions
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index fde16f40a581..9cc12aeed22c 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -176,81 +176,6 @@ xdr_inline_pages(struct xdr_buf *xdr, unsigned int offset,
176 xdr->buflen += len; 176 xdr->buflen += len;
177} 177}
178 178
179ssize_t
180xdr_partial_copy_from_skb(struct xdr_buf *xdr, unsigned int base,
181 skb_reader_t *desc,
182 skb_read_actor_t copy_actor)
183{
184 struct page **ppage = xdr->pages;
185 unsigned int len, pglen = xdr->page_len;
186 ssize_t copied = 0;
187 int ret;
188
189 len = xdr->head[0].iov_len;
190 if (base < len) {
191 len -= base;
192 ret = copy_actor(desc, (char *)xdr->head[0].iov_base + base, len);
193 copied += ret;
194 if (ret != len || !desc->count)
195 goto out;
196 base = 0;
197 } else
198 base -= len;
199
200 if (pglen == 0)
201 goto copy_tail;
202 if (base >= pglen) {
203 base -= pglen;
204 goto copy_tail;
205 }
206 if (base || xdr->page_base) {
207 pglen -= base;
208 base += xdr->page_base;
209 ppage += base >> PAGE_CACHE_SHIFT;
210 base &= ~PAGE_CACHE_MASK;
211 }
212 do {
213 char *kaddr;
214
215 /* ACL likes to be lazy in allocating pages - ACLs
216 * are small by default but can get huge. */
217 if (unlikely(*ppage == NULL)) {
218 *ppage = alloc_page(GFP_ATOMIC);
219 if (unlikely(*ppage == NULL)) {
220 if (copied == 0)
221 copied = -ENOMEM;
222 goto out;
223 }
224 }
225
226 len = PAGE_CACHE_SIZE;
227 kaddr = kmap_atomic(*ppage, KM_SKB_SUNRPC_DATA);
228 if (base) {
229 len -= base;
230 if (pglen < len)
231 len = pglen;
232 ret = copy_actor(desc, kaddr + base, len);
233 base = 0;
234 } else {
235 if (pglen < len)
236 len = pglen;
237 ret = copy_actor(desc, kaddr, len);
238 }
239 flush_dcache_page(*ppage);
240 kunmap_atomic(kaddr, KM_SKB_SUNRPC_DATA);
241 copied += ret;
242 if (ret != len || !desc->count)
243 goto out;
244 ppage++;
245 } while ((pglen -= len) != 0);
246copy_tail:
247 len = xdr->tail[0].iov_len;
248 if (base < len)
249 copied += copy_actor(desc, (char *)xdr->tail[0].iov_base + base, len - base);
250out:
251 return copied;
252}
253
254 179
255int 180int
256xdr_sendpages(struct socket *sock, struct sockaddr *addr, int addrlen, 181xdr_sendpages(struct socket *sock, struct sockaddr *addr, int addrlen,