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mm/vma: use unmap_region() in vms_clear_ptes()

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There is no need to open code the vms_clear_ptes() now that unmap_desc
struct is used.

Link: https://lkml.kernel.org/r/20260121164946.2093480-11-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Chris Li <chrisl@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Kairui Song <kasong@tencent.com>
Cc: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: SeongJae Park <sj@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Liam R. Howlett 2026-01-21 11:49:45 -05:00 • committed by Andrew Morton
parent 0df5a8d394
commit 2314fe9ba5
1 changed files with 1 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

14
mm/vma.c
View file

@ -1255,7 +1255,6 @@ int vma_shrink(struct vma_iterator *vmi, struct vm_area_struct *vma,
static inline void vms_clear_ptes(struct vma_munmap_struct *vms,
struct ma_state *mas_detach, bool mm_wr_locked)
{
struct mmu_gather tlb;
struct unmap_desc unmap = {
.mas = mas_detach,
.first = vms->vma,
@ -1280,19 +1279,8 @@ static inline void vms_clear_ptes(struct vma_munmap_struct *vms,
if (!vms->clear_ptes) /* Nothing to do */
return;
/*
* We can free page tables without write-locking mmap_lock because VMAs
* were isolated before we downgraded mmap_lock.
*/
mas_set(mas_detach, 1);
tlb_gather_mmu(&tlb, vms->vma->vm_mm);
update_hiwater_rss(vms->vma->vm_mm);
unmap_vmas(&tlb, &unmap);
mas_set(mas_detach, 1);
/* start and end may be different if there is no prev or next vma. */
free_pgtables(&tlb, mas_detach, vms->vma, vms->unmap_start,
vms->unmap_end, vms->unmap_end, mm_wr_locked);
tlb_finish_mmu(&tlb);
unmap_region(&unmap);
vms->clear_ptes = false;
}