lib: split codetag_lock_module_list()

lib: split codetag_lock_module_list()

Letting a function argument indicate whether a lock or unlock operation
should be performed is incompatible with compile-time analysis of locking
operations by sparse and Clang.  Hence, split codetag_lock_module_list()
into two functions: a function that locks cttype->mod_lock and another
function that unlocks cttype->mod_lock.  No functionality has been
changed.  See also commit 916cc5167cc6 ("lib: code tagging framework").

Link: https://lore.kernel.org/20260324214226.3684605-1-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Suren Baghdasaryan <surenb@google.com>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>