tree e7ac2638a53a4974fb458a7583e7a096e60f3e0b
parent c3156fea4d8a0e643625dff69a0421e872d1fdae
author NeilBrown <neilb@suse.com> 1543797030 +1100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1633525511 +0200

cred: allow get_cred() and put_cred() to be given NULL.

commit f06bc03339ad4c1baa964a5f0606247ac1c3c50b upstream.

It is common practice for helpers like this to silently,
accept a NULL pointer.
get_rpccred() and put_rpccred() used by NFS act this way
and using the same interface will ease the conversion
for NFS, and simplify the resulting code.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>