Commit 79ba6ac8 authored Jul 04, 2009 by Tejun Heo

x86: make pcpu_chunk_addr_search() matching stricter



The @addr passed into pcpu_chunk_addr_search() is unit0 based address
and thus should be matched inside unit0 area.  Currently, when it uses
chunk size when determining whether the address falls in the first
chunk.  Addresses in unitN where N>0 shouldn't be passed in anyway, so
this doesn't cause any malfunction but fix it for consistency.

[ Impact: mostly cleanup ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>

parent c43768cb

mm/percpu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -290,7 +290,7 @@ static struct pcpu_chunk pcpu_chunk_addr_search(void addr)
		void *first_start = pcpu_first_chunk->vm->addr;

		/* is it in the first chunk? */
		if (addr >= first_start && addr < first_start + pcpu_chunk_size) {
		if (addr >= first_start && addr < first_start + pcpu_unit_size) {
		/* is it in the reserved area? */
		if (addr < first_start + pcpu_reserved_chunk_limit)
		return pcpu_reserved_chunk;

Admin message