diff options
| author | Thorsten Blum <thorsten.blum@linux.dev> | 2025-12-17 12:02:13 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-01-20 19:24:47 -0800 |
| commit | 84355caa271a0eab2d1b55ff73aa8aa3e4627661 (patch) | |
| tree | 95d4e3fb92b0aeafb3e6baece0dfed133b2aef34 /include/linux | |
| parent | a98ec863fdedf4940447f32ceda7d937bebd06a2 (diff) | |
mm/mm_init: replace simple_strtoul with kstrtobool in set_hashdist
Use bool for 'hashdist' and replace simple_strtoul() with kstrtobool() for
parsing the 'hashdist=' boot parameter. Unlike simple_strtoul(), which
returns an unsigned long, kstrtobool() converts the string directly to
bool and avoids implicit casting.
Check the return value of kstrtobool() and reject invalid values. This
adds error handling while preserving behavior for existing values, and
removes use of the deprecated simple_strtoul() helper. The current code
silently sets 'hashdist = 0' if parsing fails, instead of leaving the
default value (HASHDIST_DEFAULT) unchanged.
Additionally, kstrtobool() accepts common boolean strings such as "on" and
"off".
Link: https://lkml.kernel.org/r/20251217110214.50807-1-thorsten.blum@linux.dev
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/memblock.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 221118b5a16e..6ec5e9ac0699 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -598,9 +598,9 @@ extern void *alloc_large_system_hash(const char *tablename, */ #ifdef CONFIG_NUMA #define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT) -extern int hashdist; /* Distribute hashes across NUMA nodes? */ +extern bool hashdist; /* Distribute hashes across NUMA nodes? */ #else -#define hashdist (0) +#define hashdist (false) #endif #ifdef CONFIG_MEMTEST |