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Merge 5.4-rc1-prereleae into android-mainline

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To make the 5.4-rc1 merge easier, merge at a prerelease point in time
before the final release happens.

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I29b683c837ed1a3324644dbf9bf863f30740cd0b
This commit is contained in:
Greg Kroah-Hartman
2019-09-23 14:14:08 +02:00
parent 938a89928b 619e17cf75
commit 896be8f44d
3550 changed files with 334073 additions and 72096 deletions
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26
mm/mprotect.c
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@@ -9,7 +9,7 @@
* (C) Copyright 2002 Red Hat Inc, All Rights Reserved
*/
#include <linux/mm.h>
#include <linux/pagewalk.h>
#include <linux/hugetlb.h>
#include <linux/shm.h>
#include <linux/mman.h>
@@ -329,20 +329,11 @@ static int prot_none_test(unsigned long addr, unsigned long next,
return 0;
}
static int prot_none_walk(struct vm_area_struct *vma, unsigned long start,
unsigned long end, unsigned long newflags)
{
pgprot_t new_pgprot = vm_get_page_prot(newflags);
struct mm_walk prot_none_walk = {
.pte_entry = prot_none_pte_entry,
.hugetlb_entry = prot_none_hugetlb_entry,
.test_walk = prot_none_test,
.mm = current->mm,
.private = &new_pgprot,
};
return walk_page_range(start, end, &prot_none_walk);
}
static const struct mm_walk_ops prot_none_walk_ops = {
.pte_entry = prot_none_pte_entry,
.hugetlb_entry = prot_none_hugetlb_entry,
.test_walk = prot_none_test,
};
int
mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev,
@@ -369,7 +360,10 @@ mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev,
if (arch_has_pfn_modify_check() &&
(vma->vm_flags & (VM_PFNMAP|VM_MIXEDMAP)) &&
(newflags & (VM_READ|VM_WRITE|VM_EXEC)) == 0) {
error = prot_none_walk(vma, start, end, newflags);
pgprot_t new_pgprot = vm_get_page_prot(newflags);
error = walk_page_range(current->mm, start, end,
&prot_none_walk_ops, &new_pgprot);
if (error)
return error;
}