Date: Sun, 21 Jul 2024 13:14:46 GMT From: Vladimir Kondratyev <wulf@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: ab6e1167909b - main - LinuxKPI: Add kvrealloc to linux/slab.h Message-ID: <202407211314.46LDEk5T022943@gitrepo.freebsd.org>
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The branch main has been updated by wulf: URL: https://cgit.FreeBSD.org/src/commit/?id=ab6e1167909bf1e2792a2ba33000e13d33aaf551 commit ab6e1167909bf1e2792a2ba33000e13d33aaf551 Author: Vladimir Kondratyev <wulf@FreeBSD.org> AuthorDate: 2024-07-21 13:08:28 +0000 Commit: Vladimir Kondratyev <wulf@FreeBSD.org> CommitDate: 2024-07-21 13:08:28 +0000 LinuxKPI: Add kvrealloc to linux/slab.h Sponsored by: Serenity Cyber Security, LLC MFC after: 1 week Reviewed by: manu Differential Revision: https://reviews.freebsd.org/D45616 --- sys/compat/linuxkpi/common/include/linux/slab.h | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/sys/compat/linuxkpi/common/include/linux/slab.h b/sys/compat/linuxkpi/common/include/linux/slab.h index 298306b6ea05..e2d17e0558c2 100644 --- a/sys/compat/linuxkpi/common/include/linux/slab.h +++ b/sys/compat/linuxkpi/common/include/linux/slab.h @@ -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);
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