+ mm-vmalloc-pass-vm_usermap-flags-directly-to-__vmalloc_node_range.patch added to -mm tree

[akpm@xxxxxxxxxxxxxxxxxxxx]

The patch titled
     Subject: mm/vmalloc: pass VM_USERMAP flags directly to __vmalloc_node_range()
has been added to the -mm tree.  Its filename is
     mm-vmalloc-pass-vm_usermap-flags-directly-to-__vmalloc_node_range.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-vmalloc-pass-vm_usermap-flags-directly-to-__vmalloc_node_range.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-vmalloc-pass-vm_usermap-flags-directly-to-__vmalloc_node_range.patch

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------------------------------------------------------
From: Roman Penyaev <rpenyaev@xxxxxxx>
Subject: mm/vmalloc: pass VM_USERMAP flags directly to __vmalloc_node_range()

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.

Link: http://lkml.kernel.org/r/20190103145954.16942-4-rpenyaev@xxxxxxx
Signed-off-by: Roman Penyaev <rpenyaev@xxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Joe Perches <joe@xxxxxxxxxxx>
Cc: "Luis R. Rodriguez" <mcgrof@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/vmalloc.c |   30 ++++++++----------------------
 1 file changed, 8 insertions(+), 22 deletions(-)

--- a/mm/vmalloc.c~mm-vmalloc-pass-vm_usermap-flags-directly-to-__vmalloc_node_range
+++ a/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);
 
_

Patches currently in -mm which might be from rpenyaev@xxxxxxx are

epoll-make-sure-all-elements-in-ready-list-are-in-fifo-order.patch
epoll-loosen-irq-safety-in-ep_poll_callback.patch
epoll-unify-awaking-of-wakeup-source-on-ep_poll_callback-path.patch
epoll-use-rwlock-in-order-to-reduce-ep_poll_callback-contention.patch
mm-vmalloc-fix-size-check-for-remap_vmalloc_range_partial.patch
mm-vmalloc-do-not-call-kmemleak_free-on-not-yet-accounted-memory.patch
mm-vmalloc-pass-vm_usermap-flags-directly-to-__vmalloc_node_range.patch