The quilt patch titled Subject: lib/stackdepot: drop valid bit from handles has been removed from the -mm tree. Its filename was lib-stackdepot-drop-valid-bit-from-handles.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Andrey Konovalov <andreyknvl@xxxxxxxxxx> Subject: lib/stackdepot: drop valid bit from handles Date: Mon, 20 Nov 2023 18:47:02 +0100 Stack depot doesn't use the valid bit in handles in any way, so drop it. Link: https://lkml.kernel.org/r/34969bba2ca6e012c6ad071767197dee64dc5723.1700502145.git.andreyknvl@xxxxxxxxxx Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: Evgenii Stepanov <eugenis@xxxxxxxxxx> Cc: Marco Elver <elver@xxxxxxxxxx> Cc: Oscar Salvador <osalvador@xxxxxxx> Cc: Vlastimil Babka <vbabka@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/stackdepot.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) --- a/lib/stackdepot.c~lib-stackdepot-drop-valid-bit-from-handles +++ a/lib/stackdepot.c @@ -32,13 +32,12 @@ #define DEPOT_HANDLE_BITS (sizeof(depot_stack_handle_t) * 8) -#define DEPOT_VALID_BITS 1 #define DEPOT_POOL_ORDER 2 /* Pool size order, 4 pages */ #define DEPOT_POOL_SIZE (1LL << (PAGE_SHIFT + DEPOT_POOL_ORDER)) #define DEPOT_STACK_ALIGN 4 #define DEPOT_OFFSET_BITS (DEPOT_POOL_ORDER + PAGE_SHIFT - DEPOT_STACK_ALIGN) -#define DEPOT_POOL_INDEX_BITS (DEPOT_HANDLE_BITS - DEPOT_VALID_BITS - \ - DEPOT_OFFSET_BITS - STACK_DEPOT_EXTRA_BITS) +#define DEPOT_POOL_INDEX_BITS (DEPOT_HANDLE_BITS - DEPOT_OFFSET_BITS - \ + STACK_DEPOT_EXTRA_BITS) #define DEPOT_POOLS_CAP 8192 #define DEPOT_MAX_POOLS \ (((1LL << (DEPOT_POOL_INDEX_BITS)) < DEPOT_POOLS_CAP) ? \ @@ -50,7 +49,6 @@ union handle_parts { struct { u32 pool_index : DEPOT_POOL_INDEX_BITS; u32 offset : DEPOT_OFFSET_BITS; - u32 valid : DEPOT_VALID_BITS; u32 extra : STACK_DEPOT_EXTRA_BITS; }; }; @@ -309,7 +307,6 @@ depot_alloc_stack(unsigned long *entries stack->size = size; stack->handle.pool_index = pool_index; stack->handle.offset = pool_offset >> DEPOT_STACK_ALIGN; - stack->handle.valid = 1; stack->handle.extra = 0; memcpy(stack->entries, entries, flex_array_size(stack, entries, size)); pool_offset += required_size; _ Patches currently in -mm which might be from andreyknvl@xxxxxxxxxx are