[PATCH] mm/thp: dead code cleanup in Kconfig

Julian Braha
2026-03-31T07:07:45Z

There is already an 'if TRANSPARENT_HUGEPAGE' condition wrapping several
config options e.g. 'READ_ONLY_THP_FOR_FS', making
the 'depends on' statement for each of these a duplicate dependency
(dead code).

I propose leaving the outer 'if TRANSPARENT_HUGEPAGE...endif' and removing
the individual 'depends on TRANSPARENT_HUGEPAGE' statement from each
option.

This dead code was found by kconfirm, a static analysis tool for Kconfig.

Signed-off-by: Julian Braha <julianbraha@gmail.com>
---
mm/Kconfig | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/mm/Kconfig b/mm/Kconfig
index e8bf1e9e6ad9..29d2de0d5c06 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -810,7 +810,6 @@ if TRANSPARENT_HUGEPAGE

choice
prompt "Transparent Hugepage Support sysfs defaults"
- depends on TRANSPARENT_HUGEPAGE
default TRANSPARENT_HUGEPAGE_ALWAYS
help
Selects the sysfs defaults for Transparent Hugepage Support.
@@ -840,7 +839,6 @@ endchoice

choice
prompt "Shmem hugepage allocation defaults"
- depends on TRANSPARENT_HUGEPAGE
default TRANSPARENT_HUGEPAGE_SHMEM_HUGE_NEVER
help
Selects the hugepage allocation policy defaults for
@@ -886,7 +884,6 @@ endchoice

choice
prompt "Tmpfs hugepage allocation defaults"
- depends on TRANSPARENT_HUGEPAGE
default TRANSPARENT_HUGEPAGE_TMPFS_HUGE_NEVER
help
Selects the hugepage allocation policy defaults for
@@ -931,7 +928,7 @@ endchoice

config THP_SWAP
def_bool y
- depends on TRANSPARENT_HUGEPAGE && ARCH_WANTS_THP_SWAP && SWAP && 64BIT
+ depends on ARCH_WANTS_THP_SWAP && SWAP && 64BIT
help
Swap transparent huge pages in one piece, without splitting.
XXX: For now, swap cluster backing transparent huge page
@@ -941,7 +938,6 @@ config THP_SWAP

config READ_ONLY_THP_FOR_FS
bool "Read-only THP for filesystems (EXPERIMENTAL)"
- depends on TRANSPARENT_HUGEPAGE

help
Allow khugepaged to put read-only file-backed pages in THP.
--
2.51.2