Btrfs: return value of btrfs_read_buffer is checked correctly
btrfs_read_buffer() has the possibility of returning the error.
Therefore, I add the code in which the return value of btrfs_read_buffer()
is checked.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 2684799..99fcad6 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -739,7 +739,11 @@
if (!cur)
return -EIO;
} else if (!uptodate) {
- btrfs_read_buffer(cur, gen);
+ err = btrfs_read_buffer(cur, gen);
+ if (err) {
+ free_extent_buffer(cur);
+ return err;
+ }
}
}
if (search_start == 0)