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scst/include/backport.h: Fix backport for new stable kernels

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This patch fixes the build against kernel versions >= 6.18.33.
This commit is contained in:
Gleb Chesnokov
2026-06-16 15:51:16 +03:00
parent 6fa70db0e1
commit ccc7eadd0b
1 changed files with 67 additions and 20 deletions
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scst/include/backport.h
+67 -20
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@@ -1719,17 +1719,80 @@ static inline struct kmem_cache *kmem_cache_create_usercopy(const char *name,
*/
#define __default_gfp(a,...) a
#define default_gfp(...) __default_gfp(__VA_ARGS__ __VA_OPT__(,) GFP_KERNEL)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(7, 0, 0) && \
(LINUX_VERSION_CODE >> 8 != KERNEL_VERSION(6, 18, 0) >> 8 || \
LINUX_VERSION_CODE < KERNEL_VERSION(6, 18, 33))
/*
* See also commit 2932ba8d9c99 ("slab: Introduce kmalloc_obj() and family") # v7.0.
* See also commit e4c8b46b924e ("slab: Introduce kmalloc_flex() and family") # v7.0.
* See also commit 3bf5e19c804d # v6.18.33.
*/
#define __alloc_objs(KMALLOC, GFP, TYPE, COUNT) \
({ \
const size_t __obj_size = size_mul(sizeof(TYPE), COUNT); \
(TYPE *)KMALLOC(__obj_size, GFP); \
})
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(7, 0, 0)
/*
* See also commit 2932ba8d9c99 ("slab: Introduce kmalloc_obj() and family") # v7.0.
* See also commit 3bf5e19c804d # v6.18.33.
*/
#ifdef kmalloc_obj
#undef kmalloc_obj
#endif
#ifdef kmalloc_objs
#undef kmalloc_objs
#endif
#ifdef kzalloc_obj
#undef kzalloc_obj
#endif
#ifdef kzalloc_objs
#undef kzalloc_objs
#endif
#ifdef kvmalloc_obj
#undef kvmalloc_obj
#endif
#ifdef kvmalloc_objs
#undef kvmalloc_objs
#endif
#ifdef kvzalloc_obj
#undef kvzalloc_obj
#endif
#ifdef kvzalloc_objs
#undef kvzalloc_objs
#endif
#define kmalloc_obj(VAR_OR_TYPE, ...) \
__alloc_objs(kmalloc, default_gfp(__VA_ARGS__), typeof(VAR_OR_TYPE), 1)
#define kmalloc_objs(VAR_OR_TYPE, COUNT, ...) \
__alloc_objs(kmalloc, default_gfp(__VA_ARGS__), typeof(VAR_OR_TYPE), COUNT)
/* All kzalloc aliases for kmalloc_(obj|objs). */
#define kzalloc_obj(P, ...) \
__alloc_objs(kzalloc, default_gfp(__VA_ARGS__), typeof(P), 1)
#define kzalloc_objs(P, COUNT, ...) \
__alloc_objs(kzalloc, default_gfp(__VA_ARGS__), typeof(P), COUNT)
/* All kvmalloc aliases for kmalloc_(obj|objs). */
#define kvmalloc_obj(P, ...) \
__alloc_objs(kvmalloc, default_gfp(__VA_ARGS__), typeof(P), 1)
#define kvmalloc_objs(P, COUNT, ...) \
__alloc_objs(kvmalloc, default_gfp(__VA_ARGS__), typeof(P), COUNT)
/* All kvzalloc aliases for kmalloc_(obj|objs). */
#define kvzalloc_obj(P, ...) \
__alloc_objs(kvzalloc, default_gfp(__VA_ARGS__), typeof(P), 1)
#define kvzalloc_objs(P, COUNT, ...) \
__alloc_objs(kvzalloc, default_gfp(__VA_ARGS__), typeof(P), COUNT)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(7, 0, 0)
/*
* See also commit e4c8b46b924e ("slab: Introduce kmalloc_flex() and family") # v7.0.
*/
#define __alloc_flex(KMALLOC, GFP, TYPE, FAM, COUNT) \
({ \
const size_t __count = (COUNT); \
@@ -1740,34 +1803,18 @@ static inline struct kmem_cache *kmem_cache_create_usercopy(const char *name,
__obj_ptr; \
})
#define kmalloc_obj(VAR_OR_TYPE, ...) \
__alloc_objs(kmalloc, default_gfp(__VA_ARGS__), typeof(VAR_OR_TYPE), 1)
#define kmalloc_objs(VAR_OR_TYPE, COUNT, ...) \
__alloc_objs(kmalloc, default_gfp(__VA_ARGS__), typeof(VAR_OR_TYPE), COUNT)
#define kmalloc_flex(VAR_OR_TYPE, FAM, COUNT, ...) \
__alloc_flex(kmalloc, default_gfp(__VA_ARGS__), typeof(VAR_OR_TYPE), FAM, COUNT)
/* All kzalloc aliases for kmalloc_(obj|objs|flex). */
#define kzalloc_obj(P, ...) \
__alloc_objs(kzalloc, default_gfp(__VA_ARGS__), typeof(P), 1)
#define kzalloc_objs(P, COUNT, ...) \
__alloc_objs(kzalloc, default_gfp(__VA_ARGS__), typeof(P), COUNT)
/* All kzalloc aliases for kmalloc_(flex). */
#define kzalloc_flex(P, FAM, COUNT, ...) \
__alloc_flex(kzalloc, default_gfp(__VA_ARGS__), typeof(P), FAM, COUNT)
/* All kvmalloc aliases for kmalloc_(obj|objs|flex). */
#define kvmalloc_obj(P, ...) \
__alloc_objs(kvmalloc, default_gfp(__VA_ARGS__), typeof(P), 1)
#define kvmalloc_objs(P, COUNT, ...) \
__alloc_objs(kvmalloc, default_gfp(__VA_ARGS__), typeof(P), COUNT)
/* All kvmalloc aliases for kmalloc_(flex). */
#define kvmalloc_flex(P, FAM, COUNT, ...) \
__alloc_flex(kvmalloc, default_gfp(__VA_ARGS__), typeof(P), FAM, COUNT)
/* All kvzalloc aliases for kmalloc_(obj|objs|flex). */
#define kvzalloc_obj(P, ...) \
__alloc_objs(kvzalloc, default_gfp(__VA_ARGS__), typeof(P), 1)
#define kvzalloc_objs(P, COUNT, ...) \
__alloc_objs(kvzalloc, default_gfp(__VA_ARGS__), typeof(P), COUNT)
/* All kvzalloc aliases for kmalloc_(flex). */
#define kvzalloc_flex(P, FAM, COUNT, ...) \
__alloc_flex(kvzalloc, default_gfp(__VA_ARGS__), typeof(P), FAM, COUNT)
#endif