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authorLiam Howlett <liam.howlett@oracle.com>2021-06-28 19:39:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-06-29 10:53:52 -0700
commit059b8b4875b3c046770e4f9fb553ece40b217b40 (patch)
tree4a42dfdef71a5a1dfe2b9bb637b1fc2fd37a9394
parentff69fb8100f18151f838c1e07368bbc98b437e6a (diff)
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.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/migrate.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index 41ff2c9896c4..380ca57b9031 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -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 */