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-rw-r--r--net/ceph/pagevec.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/net/ceph/pagevec.c b/net/ceph/pagevec.c
index ac34feeb2b3a..1a040e64c69f 100644
--- a/net/ceph/pagevec.c
+++ b/net/ceph/pagevec.c
@@ -13,7 +13,7 @@
13 * build a vector of user pages 13 * build a vector of user pages
14 */ 14 */
15struct page **ceph_get_direct_page_vector(const char __user *data, 15struct page **ceph_get_direct_page_vector(const char __user *data,
16 int num_pages) 16 int num_pages, bool write_page)
17{ 17{
18 struct page **pages; 18 struct page **pages;
19 int rc; 19 int rc;
@@ -24,24 +24,27 @@ struct page **ceph_get_direct_page_vector(const char __user *data,
24 24
25 down_read(&current->mm->mmap_sem); 25 down_read(&current->mm->mmap_sem);
26 rc = get_user_pages(current, current->mm, (unsigned long)data, 26 rc = get_user_pages(current, current->mm, (unsigned long)data,
27 num_pages, 0, 0, pages, NULL); 27 num_pages, write_page, 0, pages, NULL);
28 up_read(&current->mm->mmap_sem); 28 up_read(&current->mm->mmap_sem);
29 if (rc < 0) 29 if (rc < num_pages)
30 goto fail; 30 goto fail;
31 return pages; 31 return pages;
32 32
33fail: 33fail:
34 kfree(pages); 34 ceph_put_page_vector(pages, rc > 0 ? rc : 0, false);
35 return ERR_PTR(rc); 35 return ERR_PTR(rc);
36} 36}
37EXPORT_SYMBOL(ceph_get_direct_page_vector); 37EXPORT_SYMBOL(ceph_get_direct_page_vector);
38 38
39void ceph_put_page_vector(struct page **pages, int num_pages) 39void ceph_put_page_vector(struct page **pages, int num_pages, bool dirty)
40{ 40{
41 int i; 41 int i;
42 42
43 for (i = 0; i < num_pages; i++) 43 for (i = 0; i < num_pages; i++) {
44 if (dirty)
45 set_page_dirty_lock(pages[i]);
44 put_page(pages[i]); 46 put_page(pages[i]);
47 }
45 kfree(pages); 48 kfree(pages);
46} 49}
47EXPORT_SYMBOL(ceph_put_page_vector); 50EXPORT_SYMBOL(ceph_put_page_vector);