btrfs: send: replace check with an assert in gen_unique_name
The buffer passed to snprintf can hold the fully expanded format string,
64 = 3x largest ULL + 3x char + trailing null. I don't think that removing the
check entirely is a good idea, hence the ASSERT.
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fb.com>
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 154a717..08edd0a 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -1418,11 +1418,7 @@
while (1) {
len = snprintf(tmp, sizeof(tmp), "o%llu-%llu-%llu",
ino, gen, idx);
- if (len >= sizeof(tmp)) {
- /* should really not happen */
- ret = -EOVERFLOW;
- goto out;
- }
+ ASSERT(len < sizeof(tmp));
di = btrfs_lookup_dir_item(NULL, sctx->send_root,
path, BTRFS_FIRST_FREE_OBJECTID,