ceph: pass proper page offset to copy_page_to_iter()
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 19af25d..fec9ddc 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -470,8 +470,11 @@
size_t left = ret;
while (left) {
- int copy = min_t(size_t, PAGE_SIZE, left);
- l = copy_page_to_iter(pages[k++], 0, copy, i);
+ size_t page_off = off & ~PAGE_MASK;
+ size_t copy = min_t(size_t,
+ PAGE_SIZE - page_off, left);
+ l = copy_page_to_iter(pages[k++], page_off,
+ copy, i);
off += l;
left -= l;
if (l < copy)