Btrfs: remove unnecessary IS_ERR in bio_readpage_error()

Because the value of extent_map is only a correct value or NULL,
so IS_ERR is unnecessary.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index e8ee39b..67fe401 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2110,7 +2110,7 @@ static int bio_readpage_error(struct bio *failed_bio, struct page *page,
                }
                read_unlock(&em_tree->lock);
 
-               if (!em || IS_ERR(em)) {
+               if (!em) {
                        kfree(failrec);
                        return -EIO;
                }