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msm: Increase the kernel virtual area to include lowmem

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Even though lowmem is accounted for in vmalloc space,
allocation comes only from the region bounded by
VMALLOC_START and VMALLOC_END. The kernel virtual area
can now allocate from any unmapped region starting
from PAGE_OFFSET.

Change-Id: I291b9eb443d3f7445fd979bd7b09e9241ff22ba3
Signed-off-by: Neeti Desai <neetid@codeaurora.org>
Signed-off-by: Susheel Khiani <skhiani@codeaurora.org>
This commit is contained in:
Susheel Khiani 2015-09-03 18:21:23 +05:30 • committed by Gerrit - the friendly Code Review server
commit 644acac772
1 changed files with 11 additions and 0 deletions
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11
mm/vmalloc.c
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@ -2172,16 +2172,27 @@ struct vm_struct *__get_vm_area_caller(unsigned long size, unsigned long flags,
*/
struct vm_struct *get_vm_area(unsigned long size, unsigned long flags)
{
#ifdef CONFIG_ENABLE_VMALLOC_SAVING
return __get_vm_area_node(size, 1, flags, PAGE_OFFSET, VMALLOC_END,
NUMA_NO_NODE, GFP_KERNEL,
__builtin_return_address(0));
#else
return __get_vm_area_node(size, 1, flags, VMALLOC_START, VMALLOC_END,
NUMA_NO_NODE, GFP_KERNEL,
__builtin_return_address(0));
#endif
}
struct vm_struct *get_vm_area_caller(unsigned long size, unsigned long flags,
const void *caller)
{
#ifdef CONFIG_ENABLE_VMALLOC_SAVING
return __get_vm_area_node(size, 1, flags, PAGE_OFFSET, VMALLOC_END,
NUMA_NO_NODE, GFP_KERNEL, caller);
#else
return __get_vm_area_node(size, 1, flags, VMALLOC_START, VMALLOC_END,
NUMA_NO_NODE, GFP_KERNEL, caller);
#endif
}
/**