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authorJan Kara <jack@suse.cz>2016-12-15 00:07:01 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-15 01:04:09 +0100
commit1a29d85eb0f19b7d8271923d8917d7b4f5540b3e (patch)
tree76bf90e637fb4b0c95a7a9eb81bc9aec71329a4e /mm/memory.c
parentmm: join struct fault_env and vm_fault (diff)
downloadlinux-1a29d85eb0f19b7d8271923d8917d7b4f5540b3e.tar.xz
linux-1a29d85eb0f19b7d8271923d8917d7b4f5540b3e.zip
mm: use vmf->address instead of of vmf->virtual_address
Every single user of vmf->virtual_address typed that entry to unsigned long before doing anything with it so the type of virtual_address does not really provide us any additional safety. Just use masked vmf->address which already has the appropriate type. Link: http://lkml.kernel.org/r/1479460644-25076-3-git-send-email-jack@suse.cz Signed-off-by: Jan Kara <jack@suse.cz> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
-rw-r--r--mm/memory.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 512e1c359193..379836261d4a 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2040,7 +2040,7 @@ static int do_page_mkwrite(struct vm_area_struct *vma, struct page *page,
struct vm_fault vmf;
int ret;
- vmf.virtual_address = (void __user *)(address & PAGE_MASK);
+ vmf.address = address & PAGE_MASK;
vmf.pgoff = page->index;
vmf.flags = FAULT_FLAG_WRITE|FAULT_FLAG_MKWRITE;
vmf.gfp_mask = __get_fault_gfp_mask(vma);
@@ -2276,8 +2276,7 @@ static int wp_pfn_shared(struct vm_fault *vmf, pte_t orig_pte)
struct vm_fault vmf2 = {
.page = NULL,
.pgoff = linear_page_index(vma, vmf->address),
- .virtual_address =
- (void __user *)(vmf->address & PAGE_MASK),
+ .address = vmf->address,
.flags = FAULT_FLAG_WRITE | FAULT_FLAG_MKWRITE,
};
int ret;
@@ -2852,7 +2851,7 @@ static int __do_fault(struct vm_fault *vmf, pgoff_t pgoff,
struct vm_fault vmf2;
int ret;
- vmf2.virtual_address = (void __user *)(vmf->address & PAGE_MASK);
+ vmf2.address = vmf->address;
vmf2.pgoff = pgoff;
vmf2.flags = vmf->flags;
vmf2.page = NULL;
@@ -3612,7 +3611,7 @@ static int __handle_mm_fault(struct vm_area_struct *vma, unsigned long address,
{
struct vm_fault vmf = {
.vma = vma,
- .address = address,
+ .address = address & PAGE_MASK,
.flags = flags,
};
struct mm_struct *mm = vma->vm_mm;