ceph: mark user pages dirty on direct-io reads
For read operation, we have to set the argument _write_ of get_user_pages
to 1 since we will write data to pages. Also, we need to SetPageDirty before
releasing these pages.
Signed-off-by: Henry C Chang <henry_c_chang@tcloudcomputing.com>
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index 9e76d35..72c72bf 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -227,8 +227,10 @@
extern void ceph_release_page_vector(struct page **pages, int num_pages);
extern struct page **ceph_get_direct_page_vector(const char __user *data,
- int num_pages);
-extern void ceph_put_page_vector(struct page **pages, int num_pages);
+ int num_pages,
+ bool write_page);
+extern void ceph_put_page_vector(struct page **pages, int num_pages,
+ bool dirty);
extern void ceph_release_page_vector(struct page **pages, int num_pages);
extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags);
extern int ceph_copy_user_to_page_vector(struct page **pages,