commit d0bd1992ddccc1b2795e2bb22c7225fd69a0b374
author Susheel Khiani <skhiani@codeaurora.org> Thu Sep 03 18:21:23 2015 +0530
committer Charan Teja Reddy <charante@codeaurora.org> Tue Jul 04 18:04:59 2017 +0530
tree c715816d20b2f317106e56e919386801fb1e05ba
parent 2d7dfcc3394909176a3b67e4124be0fc32cb1bfe

msm: Increase the kernel virtual area to include lowmem

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>

mm/vmalloc.c

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index f2481cb..47ad69e 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1412,16 +1412,27 @@
  */
 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
 }
 
 /**