ceph: move dereference after NULL test
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 25360d5..23bb0ce 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -144,7 +144,7 @@
*/
static void ceph_invalidatepage(struct page *page, unsigned long offset)
{
- struct inode *inode = page->mapping->host;
+ struct inode *inode;
struct ceph_inode_info *ci;
struct ceph_snap_context *snapc = (void *)page->private;
@@ -153,6 +153,8 @@
BUG_ON(!PagePrivate(page));
BUG_ON(!page->mapping);
+ inode = page->mapping->host;
+
/*
* We can get non-dirty pages here due to races between
* set_page_dirty and truncate_complete_page; just spit out a