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LinuxKPI: Add kvrealloc to linux/slab.h

Browse Source 
Sponsored by:	Serenity Cyber Security, LLC
MFC after:	1 week
Reviewed by:	manu
Differential Revision:	https://reviews.freebsd.org/D45616
This commit is contained in:
Vladimir Kondratyev 2024-07-21 16:08:28 +03:00
parent 5d20075f8b
commit ab6e116790
1 changed files with 19 additions and 1 deletions
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20
sys/compat/linuxkpi/common/include/linux/slab.h
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@ -91,6 +91,8 @@ struct linux_kmem_cache;
#define ZERO_SIZE_PTR ((void *)16)
#define ZERO_OR_NULL_PTR(x) ((x) == NULL || (x) == ZERO_SIZE_PTR)
extern void *lkpi_kmalloc(size_t size, gfp_t flags);
static inline gfp_t
linux_check_m_flags(gfp_t flags)
{
@ -212,13 +214,29 @@ kfree_sensitive(const void *ptr)
zfree(__DECONST(void *, ptr), M_KMALLOC);
}
static inline void *
kvrealloc(const void *ptr, size_t oldsize, size_t newsize, gfp_t flags)
{
void *newptr;
if (newsize <= oldsize)
return (__DECONST(void *, ptr));
newptr = kvmalloc(newsize, flags);
if (newptr != NULL) {
memcpy(newptr, ptr, oldsize);
kvfree(ptr);
}
return (newptr);
}
static inline size_t
ksize(const void *ptr)
{
return (malloc_usable_size(ptr));
}
extern void *lkpi_kmalloc(size_t size, gfp_t flags);
extern struct linux_kmem_cache *linux_kmem_cache_create(const char *name,
size_t size, size_t align, unsigned flags, linux_kmem_ctor_t *ctor);
extern void *lkpi_kmem_cache_alloc(struct linux_kmem_cache *, gfp_t);