summaryrefslogtreecommitdiff
path: root/mm/hugetlb.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/hugetlb.c')
-rw-r--r--mm/hugetlb.c44
1 files changed, 22 insertions, 22 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 129088710510..696befffe6f7 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3159,7 +3159,7 @@ static unsigned long hugetlb_vm_op_pagesize(struct vm_area_struct *vma)
* hugegpage VMA. do_page_fault() is supposed to trap this, so BUG is we get
* this far.
*/
-static int hugetlb_vm_op_fault(struct vm_fault *vmf)
+static vm_fault_t hugetlb_vm_op_fault(struct vm_fault *vmf)
{
BUG();
return 0;
@@ -3686,6 +3686,7 @@ static int hugetlb_no_page(struct mm_struct *mm, struct vm_area_struct *vma,
struct page *page;
pte_t new_pte;
spinlock_t *ptl;
+ unsigned long haddr = address & huge_page_mask(h);
/*
* Currently, we are forced to kill the process in the event the
@@ -3716,7 +3717,7 @@ retry:
u32 hash;
struct vm_fault vmf = {
.vma = vma,
- .address = address,
+ .address = haddr,
.flags = flags,
/*
* Hard to debug if it ends up being
@@ -3733,14 +3734,14 @@ retry:
* fault to make calling code simpler.
*/
hash = hugetlb_fault_mutex_hash(h, mm, vma, mapping,
- idx, address);
+ idx, haddr);
mutex_unlock(&hugetlb_fault_mutex_table[hash]);
ret = handle_userfault(&vmf, VM_UFFD_MISSING);
mutex_lock(&hugetlb_fault_mutex_table[hash]);
goto out;
}
- page = alloc_huge_page(vma, address, 0);
+ page = alloc_huge_page(vma, haddr, 0);
if (IS_ERR(page)) {
ret = PTR_ERR(page);
if (ret == -ENOMEM)
@@ -3789,12 +3790,12 @@ retry:
* the spinlock.
*/
if ((flags & FAULT_FLAG_WRITE) && !(vma->vm_flags & VM_SHARED)) {
- if (vma_needs_reservation(h, vma, address) < 0) {
+ if (vma_needs_reservation(h, vma, haddr) < 0) {
ret = VM_FAULT_OOM;
goto backout_unlocked;
}
/* Just decrements count, does not deallocate */
- vma_end_reservation(h, vma, address);
+ vma_end_reservation(h, vma, haddr);
}
ptl = huge_pte_lock(h, mm, ptep);
@@ -3808,17 +3809,17 @@ retry:
if (anon_rmap) {
ClearPagePrivate(page);
- hugepage_add_new_anon_rmap(page, vma, address);
+ hugepage_add_new_anon_rmap(page, vma, haddr);
} else
page_dup_rmap(page, true);
new_pte = make_huge_pte(vma, page, ((vma->vm_flags & VM_WRITE)
&& (vma->vm_flags & VM_SHARED)));
- set_huge_pte_at(mm, address, ptep, new_pte);
+ set_huge_pte_at(mm, haddr, ptep, new_pte);
hugetlb_count_add(pages_per_huge_page(h), mm);
if ((flags & FAULT_FLAG_WRITE) && !(vma->vm_flags & VM_SHARED)) {
/* Optimization, do the COW without a second fault */
- ret = hugetlb_cow(mm, vma, address, ptep, page, ptl);
+ ret = hugetlb_cow(mm, vma, haddr, ptep, page, ptl);
}
spin_unlock(ptl);
@@ -3830,7 +3831,7 @@ backout:
spin_unlock(ptl);
backout_unlocked:
unlock_page(page);
- restore_reserve_on_error(h, vma, address, page);
+ restore_reserve_on_error(h, vma, haddr, page);
put_page(page);
goto out;
}
@@ -3883,10 +3884,9 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
struct hstate *h = hstate_vma(vma);
struct address_space *mapping;
int need_wait_lock = 0;
+ unsigned long haddr = address & huge_page_mask(h);
- address &= huge_page_mask(h);
-
- ptep = huge_pte_offset(mm, address, huge_page_size(h));
+ ptep = huge_pte_offset(mm, haddr, huge_page_size(h));
if (ptep) {
entry = huge_ptep_get(ptep);
if (unlikely(is_hugetlb_entry_migration(entry))) {
@@ -3896,20 +3896,20 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
return VM_FAULT_HWPOISON_LARGE |
VM_FAULT_SET_HINDEX(hstate_index(h));
} else {
- ptep = huge_pte_alloc(mm, address, huge_page_size(h));
+ ptep = huge_pte_alloc(mm, haddr, huge_page_size(h));
if (!ptep)
return VM_FAULT_OOM;
}
mapping = vma->vm_file->f_mapping;
- idx = vma_hugecache_offset(h, vma, address);
+ idx = vma_hugecache_offset(h, vma, haddr);
/*
* Serialize hugepage allocation and instantiation, so that we don't
* get spurious allocation failures if two CPUs race to instantiate
* the same page in the page cache.
*/
- hash = hugetlb_fault_mutex_hash(h, mm, vma, mapping, idx, address);
+ hash = hugetlb_fault_mutex_hash(h, mm, vma, mapping, idx, haddr);
mutex_lock(&hugetlb_fault_mutex_table[hash]);
entry = huge_ptep_get(ptep);
@@ -3939,16 +3939,16 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
* consumed.
*/
if ((flags & FAULT_FLAG_WRITE) && !huge_pte_write(entry)) {
- if (vma_needs_reservation(h, vma, address) < 0) {
+ if (vma_needs_reservation(h, vma, haddr) < 0) {
ret = VM_FAULT_OOM;
goto out_mutex;
}
/* Just decrements count, does not deallocate */
- vma_end_reservation(h, vma, address);
+ vma_end_reservation(h, vma, haddr);
if (!(vma->vm_flags & VM_MAYSHARE))
pagecache_page = hugetlbfs_pagecache_page(h,
- vma, address);
+ vma, haddr);
}
ptl = huge_pte_lock(h, mm, ptep);
@@ -3973,16 +3973,16 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
if (flags & FAULT_FLAG_WRITE) {
if (!huge_pte_write(entry)) {
- ret = hugetlb_cow(mm, vma, address, ptep,
+ ret = hugetlb_cow(mm, vma, haddr, ptep,
pagecache_page, ptl);
goto out_put_page;
}
entry = huge_pte_mkdirty(entry);
}
entry = pte_mkyoung(entry);
- if (huge_ptep_set_access_flags(vma, address, ptep, entry,
+ if (huge_ptep_set_access_flags(vma, haddr, ptep, entry,
flags & FAULT_FLAG_WRITE))
- update_mmu_cache(vma, address, ptep);
+ update_mmu_cache(vma, haddr, ptep);
out_put_page:
if (page != pagecache_page)
unlock_page(page);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-21 23:58:58 +0300