x86-32, numa: Fix failure condition check in alloc_remap()

node_remap_{start|end}_vaddr[] describe [start, end) ranges; however,
alloc_remap() incorrectly failed when the current allocation + size
equaled the end but it should fail only when it goes over.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/1301955840-7246-2-git-send-email-tj@kernel.org
Acked-by: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
index bde3906..84aac47 100644 (file)
--- a/arch/x86/mm/numa_32.c
+++ b/arch/x86/mm/numa_32.c
@@ -200,7 +200,7 @@ void *alloc_remap(int nid, unsigned long size)
 
        size = ALIGN(size, L1_CACHE_BYTES);
 
-       if (!allocation || (allocation + size) >= node_remap_end_vaddr[nid])
+       if (!allocation || (allocation + size) > node_remap_end_vaddr[nid])
                return NULL;
 
        node_remap_alloc_vaddr[nid] += size;