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mm, gup: fix typo in gup_p4d_range()

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gup_p4d_range() should call gup_pud_range(), not itself.

[ This was not noticed on x86: this is the HAVE_GENERIC_RCU_GUP code
  used by arm[64] and powerpc    - Linus ]

Fixes: c2febafc67 ("mm: convert generic code to 5-level paging")
Signed-off-by: Kirill A. Shutemov <[email protected]>
Reported-by: Chris Packham <[email protected]>
Reported-by: Anton Blanchard <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kirill A. Shutemov 2017-03-13 08:22:13 +03:00 • committed by Linus Torvalds
commit ce70df0891
1 changed files with 1 additions and 1 deletions
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mm/gup.c
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@ -1455,7 +1455,7 @@ static int gup_p4d_range(pgd_t pgd, unsigned long addr, unsigned long end,
if (!gup_huge_pd(__hugepd(p4d_val(p4d)), addr,
P4D_SHIFT, next, write, pages, nr))
return 0;
} else if (!gup_p4d_range(p4d, addr, next, write, pages, nr))
} else if (!gup_pud_range(p4d, addr, next, write, pages, nr))
return 0;
} while (p4dp++, addr = next, addr != end);