The patch titled
Subject: mm/gup: fixup gup.c for "mm/gup: refactor and de-duplicate gup_fast() code"
has been added to the -mm tree. Its filename is
mm-gup-refactor-and-de-duplicate-gup_fast-code-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-gup-refactor-and-de-duplicate-gup_fast-code-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-gup-refactor-and-de-duplicate-gup_fast-code-fix.patch
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------------------------------------------------------
From: John Hubbard <jhubbard@xxxxxxxxxx>
Subject: mm/gup: fixup gup.c for "mm/gup: refactor and de-duplicate gup_fast() code"
Include FOLL_FAST_ONLY in the list of flags to *not* WARN()
on, in internal_get_user_pages_fast().
Link: http://lkml.kernel.org/r/20200521233841.1279742-1-jhubbard@xxxxxxxxxx
Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: "Joonas Lahtinen" <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Matthew Auld <matthew.auld@xxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Souptick Joarder <jrdr.linux@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/gup.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/mm/gup.c~mm-gup-refactor-and-de-duplicate-gup_fast-code-fix
+++ a/mm/gup.c
@@ -2724,7 +2724,8 @@ static int internal_get_user_pages_fast(
int nr_pinned = 0, ret = 0;
if (WARN_ON_ONCE(gup_flags & ~(FOLL_WRITE | FOLL_LONGTERM |
- FOLL_FORCE | FOLL_PIN | FOLL_GET)))
+ FOLL_FORCE | FOLL_PIN | FOLL_GET |
+ FOLL_FAST_ONLY)))
return -EINVAL;
start = untagged_addr(start) & PAGE_MASK;
_
Patches currently in -mm which might be from jhubbard@xxxxxxxxxx are
rapidio-fix-an-error-in-get_user_pages_fast-error-handling.patch
selftests-vm-gitignore-add-mremap_dontunmap.patch
selftests-vm-write_to_hugetlbfsc-fix-unused-variable-warning.patch
mm-gup-introduce-pin_user_pages_unlocked.patch
ivtv-convert-get_user_pages-pin_user_pages.patch
mm-gup-move-__get_user_pages_fast-down-a-few-lines-in-gupc.patch
mm-gup-refactor-and-de-duplicate-gup_fast-code.patch
mm-gup-introduce-pin_user_pages_fast_only.patch
drm-i915-convert-get_user_pages-pin_user_pages.patch
khugepaged-add-self-test-fix-3.patch
rapidio-convert-get_user_pages-pin_user_pages.patch
mm-gup-refactor-and-de-duplicate-gup_fast-code-fix.patch
