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-rw-r--r--mm/mremap.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/mm/mremap.c b/mm/mremap.c
index de824e72c3e8..d77946a997f7 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -192,25 +192,24 @@ unsigned long move_page_tables(struct vm_area_struct *vma,
if (!new_pmd)
break;
if (pmd_trans_huge(*old_pmd)) {
- int err = 0;
if (extent == HPAGE_PMD_SIZE) {
+ bool moved;
VM_BUG_ON_VMA(vma->vm_file || !vma->anon_vma,
vma);
/* See comment in move_ptes() */
if (need_rmap_locks)
anon_vma_lock_write(vma->anon_vma);
- err = move_huge_pmd(vma, new_vma, old_addr,
+ moved = move_huge_pmd(vma, new_vma, old_addr,
new_addr, old_end,
old_pmd, new_pmd);
if (need_rmap_locks)
anon_vma_unlock_write(vma->anon_vma);
+ if (moved) {
+ need_flush = true;
+ continue;
+ }
}
- if (err > 0) {
- need_flush = true;
- continue;
- } else if (!err) {
- split_huge_page_pmd(vma, old_addr, old_pmd);
- }
+ split_huge_pmd(vma, old_pmd, old_addr);
VM_BUG_ON(pmd_trans_huge(*old_pmd));
}
if (pmd_none(*new_pmd) && __pte_alloc(new_vma->vm_mm, new_vma,
@@ -317,7 +316,7 @@ static unsigned long move_vma(struct vm_area_struct *vma,
* If this were a serious issue, we'd add a flag to do_munmap().
*/
hiwater_vm = mm->hiwater_vm;
- vm_stat_account(mm, vma->vm_flags, vma->vm_file, new_len>>PAGE_SHIFT);
+ vm_stat_account(mm, vma->vm_flags, new_len >> PAGE_SHIFT);
/* Tell pfnmap has moved from this vma */
if (unlikely(vma->vm_flags & VM_PFNMAP))
@@ -383,7 +382,8 @@ static struct vm_area_struct *vma_to_resize(unsigned long addr,
return ERR_PTR(-EAGAIN);
}
- if (!may_expand_vm(mm, (new_len - old_len) >> PAGE_SHIFT))
+ if (!may_expand_vm(mm, vma->vm_flags,
+ (new_len - old_len) >> PAGE_SHIFT))
return ERR_PTR(-ENOMEM);
if (vma->vm_flags & VM_ACCOUNT) {
@@ -545,7 +545,7 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
goto out;
}
- vm_stat_account(mm, vma->vm_flags, vma->vm_file, pages);
+ vm_stat_account(mm, vma->vm_flags, pages);
if (vma->vm_flags & VM_LOCKED) {
mm->locked_vm += pages;
locked = true;