mm/vmalloc.c: increase vm area range in __vmalloc_node
When the CONFIG_ENABLE_VMALLOC_SAVING is enabled, even though
the unused lowmem is used as vmalloc space, but __vmalloc_node()
still uses VMALLOC_START as the start point to allocate vm area,
but the range [VMALLOC_START, VMALLOC_END] is limited, this
may cause vmalloc allocation failure. Change the start point
to allocate the vm area from VMALLOC_START to PAGE_OFFSET to make
that allocation can be chosen from [PAGE_OFFSET, VMALLOC_START)
also.
Change-Id: I89c099484846c4bcd9b607c1925f253c165d0dd9
Signed-off-by: Qingqing Zhou <qqzhou@codeaurora.org>
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index ddb6f19..d03611a 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2500,8 +2500,13 @@
gfp_t gfp_mask, pgprot_t prot,
int node, const void *caller)
{
+#ifdef CONFIG_ENABLE_VMALLOC_SAVING
+ return __vmalloc_node_range(size, align, PAGE_OFFSET, VMALLOC_END,
+ gfp_mask, prot, 0, node, caller);
+#else
return __vmalloc_node_range(size, align, VMALLOC_START, VMALLOC_END,
gfp_mask, prot, 0, node, caller);
+#endif
}
void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot)