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
