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hc
2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/net/rds/info.c
....@@ -162,7 +162,6 @@
162162 	struct rds_info_lengths lens;
163163 	unsigned long nr_pages = 0;
164164 	unsigned long start;
165
-	unsigned long i;
166165 	rds_info_func func;
167166 	struct page **pages = NULL;
168167 	int ret;
....@@ -193,7 +192,7 @@
193192 		ret = -ENOMEM;
194193 		goto out;
195194 	}
196
-	ret = get_user_pages_fast(start, nr_pages, 1, pages);
195
+	ret = pin_user_pages_fast(start, nr_pages, FOLL_WRITE, pages);
197196 	if (ret != nr_pages) {
198197 		if (ret > 0)
199198 			nr_pages = ret;
....@@ -235,8 +234,8 @@
235234 		ret = -EFAULT;
236235 
237236 out:
238
-	for (i = 0; pages && i < nr_pages; i++)
239
-		put_page(pages[i]);
237
+	if (pages)
238
+		unpin_user_pages(pages, nr_pages);
240239 	kfree(pages);
241240 
242241 	return ret;