vfree(9) release memory allocated by vmalloc

SYNOPSIS

void vfree(const void * addr);

ARGUMENTS

addr

memory base address

DESCRIPTION

Free the virtually continuous memory area starting at addr, as obtained from vmalloc, vmalloc_32 or __vmalloc. If addr is NULL, no operation is performed.

Must not be called in NMI context (strictly speaking, only if we don't have CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG, but making the calling conventions for vfree arch-depenedent would be a really bad idea)

NOTE

assumes that the object at *addr has a size >= sizeof(llist_node)

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