Commit 0738c4bb authored Mar 12, 2008 by Paul Mundt Committed by Linus Torvalds Mar 12, 2008

nommu: Provide is_vmalloc_addr() stub.



Introduced in commit-id 9e2779fa and
ifdef'ed out for nommu in 8ca3ed87, both
approaches end up breaking the nommu build in different ways. An
impressive feat for a 2-liner.

Current is_vmalloc_addr() users fall in to two camps:

	- Determining whether to use vfree()/kfree()
	- Whether to do vmlist traversal (only /proc/kcore).

Since we don't support /proc/kcore on nommu, that leaves the
vfree()/kfree() determination use cases. nommu vfree() happens to be a
wrapper to kfree() anyways, so is_vmalloc_addr() can always return 0
and end up with the right behaviour.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent baadac8b

include/linux/mm.h

+10 −3

Original line number	Diff line number	Diff line
		@@ -235,15 +235,22 @@ static inline int get_page_unless_zero(struct page *page)
		struct page vmalloc_to_page(const void addr);
		unsigned long vmalloc_to_pfn(const void *addr);

		#ifdef CONFIG_MMU
		/* Determine if an address is within the vmalloc range */
		/*
		* Determine if an address is within the vmalloc range
		*
		* On nommu, vmalloc/vfree wrap through kmalloc/kfree directly, so there
		* is no special casing required.
		*/
		static inline int is_vmalloc_addr(const void *x)
		{
		#ifdef CONFIG_MMU
		unsigned long addr = (unsigned long)x;

		return addr >= VMALLOC_START && addr < VMALLOC_END;
		}
		#else
		return 0;
		#endif
		}

		static inline struct page compound_head(struct page page)
		{