Btrfs: Fix typo in extent_io.c

---

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index f13b1dbc0619..44fc94fee2c4 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -364,8 +364,7 @@ int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end,
         if (btrfs_test_opt(root, NODATASUM) ||
             btrfs_test_flag(inode, NODATASUM))
                 return 0;
-
-        if (state->start == start) {
+        if (state && state->start == start) {
                 private = state->private;
                 ret = 0;
         } else {