[btrfs] fix check_direct_IO() for non-iovec iterators

[cascardo/linux.git] / fs / btrfs / inode.c

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e6811c4..ff15cf4 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -8618,7 +8618,7 @@ static ssize_t check_direct_IO(struct btrfs_root *root, struct kiocb *iocb,
                goto out;
 
        /* If this is a write we don't need to check anymore */
-       if (iov_iter_rw(iter) == WRITE)
+       if (iov_iter_rw(iter) != READ || !iter_is_iovec(iter))
                return 0;
        /*
         * Check to make sure we don't have duplicate iov_base's in this