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authorJan Kara <jack@suse.cz>2016-12-14 15:07:07 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-14 16:04:09 -0800
commit667240e0f2e13e792a5af99b3c34dfab12ef125b (patch)
treef6880fe19d639a43c05b90a7e2c3e13161e0c81e /mm
parent0721ec8bc156fafc9057ec1df95cdb3bbc3cbae8 (diff)
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mm: use passed vm_fault structure in __do_fault()
Instead of creating another vm_fault structure, use the one passed to __do_fault() for passing arguments into fault handler. Link: http://lkml.kernel.org/r/1479460644-25076-5-git-send-email-jack@suse.cz Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory.c25
1 files changed, 10 insertions, 15 deletions
diff --git a/mm/memory.c b/mm/memory.c
index c514b4a07a7a..cbc6d47fda73 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2848,37 +2848,31 @@ static int __do_fault(struct vm_fault *vmf, struct page *cow_page,
struct page **page, void **entry)
{
struct vm_area_struct *vma = vmf->vma;
- struct vm_fault vmf2;
int ret;
- vmf2.address = vmf->address;
- vmf2.pgoff = vmf->pgoff;
- vmf2.flags = vmf->flags;
- vmf2.page = NULL;
- vmf2.gfp_mask = __get_fault_gfp_mask(vma);
- vmf2.cow_page = cow_page;
+ vmf->cow_page = cow_page;
- ret = vma->vm_ops->fault(vma, &vmf2);
+ ret = vma->vm_ops->fault(vma, vmf);
if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY)))
return ret;
if (ret & VM_FAULT_DAX_LOCKED) {
- *entry = vmf2.entry;
+ *entry = vmf->entry;
return ret;
}
- if (unlikely(PageHWPoison(vmf2.page))) {
+ if (unlikely(PageHWPoison(vmf->page))) {
if (ret & VM_FAULT_LOCKED)
- unlock_page(vmf2.page);
- put_page(vmf2.page);
+ unlock_page(vmf->page);
+ put_page(vmf->page);
return VM_FAULT_HWPOISON;
}
if (unlikely(!(ret & VM_FAULT_LOCKED)))
- lock_page(vmf2.page);
+ lock_page(vmf->page);
else
- VM_BUG_ON_PAGE(!PageLocked(vmf2.page), vmf2.page);
+ VM_BUG_ON_PAGE(!PageLocked(vmf->page), vmf->page);
- *page = vmf2.page;
+ *page = vmf->page;
return ret;
}
@@ -3614,6 +3608,7 @@ static int __handle_mm_fault(struct vm_area_struct *vma, unsigned long address,
.address = address & PAGE_MASK,
.flags = flags,
.pgoff = linear_page_index(vma, address),
+ .gfp_mask = __get_fault_gfp_mask(vma),
};
struct mm_struct *mm = vma->vm_mm;
pgd_t *pgd;