SMB3: update comment to clarify enumerating snapshots (973189ab) · Commits · 戴 / test

fs/cifs/smb2ops.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -1821,6 +1821,14 @@ smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
		u32 max_response_size;
		struct smb_snapshot_array snapshot_in;

		/*
		* On the first query to enumerate the list of snapshots available
		* for this volume the buffer begins with 0 (number of snapshots
		* which can be returned is zero since at that point we do not know
		* how big the buffer needs to be). On the second query,
		* it (ret_data_len) is set to number of snapshots so we can
		* know to set the maximum response size larger (see below).
		*/
		if (get_user(ret_data_len, (unsigned int __user *)ioc_buf))
		return -EFAULT;