lkml.org 
[lkml]   [2020]   [May]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] mm/gup: fixup gup.c for "mm/gup: refactor and de-duplicate gup_fast() code"
Date
Include FOLL_FAST_ONLY in the list of flags to *not* WARN()
on, in internal_get_user_pages_fast().

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: "Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---

Hi Andrew, Chris,

Andrew: This is a fixup that applies to today's (20200521) linux-next.
In that tree, this fixes up:

commit dfb8dfe80808 ("mm/gup: refactor and de-duplicate gup_fast() code")

Chris: I'd like to request another CI run for the drm/i915 changes, so
for that, would you prefer that I post a v2 of the series [1], or
is it easier for you to just apply this patch here, on top of [2]?

[1] https://lore.kernel.org/r/20200519002124.2025955-1-jhubbard@nvidia.com

[2] https://lore.kernel.org/r/158985123351.31239.10766458886430429630@emeril.freedesktop.org

thanks,
John Hubbard
NVIDIA

mm/gup.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/gup.c b/mm/gup.c
index dd8895f2fafa1..ada6aa79576dc 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -2724,7 +2724,8 @@ static int internal_get_user_pages_fast(unsigned long start, int nr_pages,
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;
--
2.26.2
\
 
 \ /
  Last update: 2020-05-22 01:39    [W:0.081 / U:0.100 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site