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Subject[PATCH 3/3] mm/vmalloc: pass VM_USERMAP flags directly to __vmalloc_node_range()
Date
vmalloc_user*() calls differ from normal vmalloc() only in that they
set VM_USERMAP flags for the area. During the whole history of
vmalloc.c changes now it is possible simply to pass VM_USERMAP flags
directly to __vmalloc_node_range() call instead of finding the area
(which obviously takes time) after the allocation.

Signed-off-by: Roman Penyaev <rpenyaev@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Joe Perches <joe@perches.com>
Cc: "Luis R. Rodriguez" <mcgrof@kernel.org>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
---
mm/vmalloc.c | 30 ++++++++----------------------
1 file changed, 8 insertions(+), 22 deletions(-)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index dc6a62bca503..83fa4c642f5e 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1865,18 +1865,10 @@ EXPORT_SYMBOL(vzalloc);
*/
void *vmalloc_user(unsigned long size)
{
- struct vm_struct *area;
- void *ret;
-
- ret = __vmalloc_node(size, SHMLBA,
- GFP_KERNEL | __GFP_ZERO,
- PAGE_KERNEL, NUMA_NO_NODE,
- __builtin_return_address(0));
- if (ret) {
- area = find_vm_area(ret);
- area->flags |= VM_USERMAP;
- }
- return ret;
+ return __vmalloc_node_range(size, SHMLBA, VMALLOC_START, VMALLOC_END,
+ GFP_KERNEL | __GFP_ZERO, PAGE_KERNEL,
+ VM_USERMAP, NUMA_NO_NODE,
+ __builtin_return_address(0));
}
EXPORT_SYMBOL(vmalloc_user);

@@ -1970,16 +1962,10 @@ EXPORT_SYMBOL(vmalloc_32);
*/
void *vmalloc_32_user(unsigned long size)
{
- struct vm_struct *area;
- void *ret;
-
- ret = __vmalloc_node(size, 1, GFP_VMALLOC32 | __GFP_ZERO, PAGE_KERNEL,
- NUMA_NO_NODE, __builtin_return_address(0));
- if (ret) {
- area = find_vm_area(ret);
- area->flags |= VM_USERMAP;
- }
- return ret;
+ return __vmalloc_node_range(size, 1, VMALLOC_START, VMALLOC_END,
+ GFP_VMALLOC32 | __GFP_ZERO, PAGE_KERNEL,
+ VM_USERMAP, NUMA_NO_NODE,
+ __builtin_return_address(0));
}
EXPORT_SYMBOL(vmalloc_32_user);

--
2.19.1
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