maple_tree: remove undocumented CONFIG_MAPLE_RCU_DISABLED macro

<linux/maple_tree.h> consults the macro CONFIG_MAPLE_RCU_DISABLED to
determine whether to disable the mt_in_rcu() function (by making it always
return false).  This macro is not reachable via Kconfig, despite its name,
and is not documented anywhere.  Remove it to avoid polluting the CONFIG_*
namespace.

Discovered while searching for CONFIG_* symbols referenced in code but not
defined in any Kconfig file.

Link: https://lore.kernel.org/20260610220905.99860-1-enelsonmoore@gmail.com
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Acked-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Liam Howlett <liam@infradead.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Cc: Andrew Ballance <andrewjballance@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Ethan Nelson-Moore 2026-06-10 15:09:04 -07:00 • committed by Andrew Morton
commit 9b5e480980