Commit 059b8b48 authored by Liam Howlett's avatar Liam Howlett Committed by Linus Torvalds

mm/migrate: use vma_lookup() in do_pages_stat_array()

Use vma_lookup() to find the VMA at a specific address.  As vma_lookup()
will return NULL if the address is not within any VMA, the start address
no longer needs to be validated.

Link: https://lkml.kernel.org/r/20210521174745.2219620-20-Liam.Howlett@Oracle.comSigned-off-by: default avatarLiam R. Howlett <Liam.Howlett@Oracle.com>
Reviewed-by: default avatarLaurent Dufour <ldufour@linux.ibm.com>
Acked-by: default avatarDavid Hildenbrand <david@redhat.com>
Acked-by: default avatarDavidlohr Bueso <dbueso@suse.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ff69fb81
......@@ -1834,8 +1834,8 @@ static void do_pages_stat_array(struct mm_struct *mm, unsigned long nr_pages,
struct page *page;
int err = -EFAULT;
vma = find_vma(mm, addr);
if (!vma || addr < vma->vm_start)
vma = vma_lookup(mm, addr);
if (!vma)
goto set_status;
/* FOLL_DUMP to ignore special (like zero) pages */
......
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