The patch titled
Subject: mm/gup: rename nr to nr_pinned in get_user_pages_fast()
has been added to the -mm tree. Its filename is
mm-gup-rename-nr-as-nr_pinned-in-get_user_pages_fast.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-gup-rename-nr-as-nr_pinned-in-get_user_pages_fast.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-gup-rename-nr-as-nr_pinned-in-get_user_pages_fast.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Pingfan Liu <kernelfans@xxxxxxxxx>
Subject: mm/gup: rename nr to nr_pinned in get_user_pages_fast()
Patch series "mm/gup: fix omission of check on FOLL_LONGTERM in gup fast
path", v4.
This patch (of 3):
To better reflect the held state of pages and make code self-explaining,
rename nr to nr_pinned.
Link: http://lkml.kernel.org/r/1560422702-11403-2-git-send-email-kernelfans@xxxxxxxxx
Signed-off-by: Pingfan Liu <kernelfans@xxxxxxxxx>
Cc: Ira Weiny <ira.weiny@xxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx>
Cc: Keith Busch <keith.busch@xxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/gup.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
--- a/mm/gup.c~mm-gup-rename-nr-as-nr_pinned-in-get_user_pages_fast
+++ a/mm/gup.c
@@ -2217,7 +2217,7 @@ int get_user_pages_fast(unsigned long st
unsigned int gup_flags, struct page **pages)
{
unsigned long addr, len, end;
- int nr = 0, ret = 0;
+ int nr_pinned = 0, ret = 0;
start &= PAGE_MASK;
addr = start;
@@ -2232,25 +2232,25 @@ int get_user_pages_fast(unsigned long st
if (gup_fast_permitted(start, nr_pages)) {
local_irq_disable();
- gup_pgd_range(addr, end, gup_flags, pages, &nr);
+ gup_pgd_range(addr, end, gup_flags, pages, &nr_pinned);
local_irq_enable();
- ret = nr;
+ ret = nr_pinned;
}
- if (nr < nr_pages) {
+ if (nr_pinned < nr_pages) {
/* Try to get the remaining pages with get_user_pages */
- start += nr << PAGE_SHIFT;
- pages += nr;
+ start += nr_pinned << PAGE_SHIFT;
+ pages += nr_pinned;
- ret = __gup_longterm_unlocked(start, nr_pages - nr,
+ ret = __gup_longterm_unlocked(start, nr_pages - nr_pinned,
gup_flags, pages);
/* Have to be a bit careful with return values */
- if (nr > 0) {
+ if (nr_pinned > 0) {
if (ret < 0)
- ret = nr;
+ ret = nr_pinned;
else
- ret += nr;
+ ret += nr_pinned;
}
}
_
Patches currently in -mm which might be from kernelfans@xxxxxxxxx are
mm-gup-rename-nr-as-nr_pinned-in-get_user_pages_fast.patch
mm-gup-fix-omission-of-check-on-foll_longterm-in-gup-fast-path.patch
mm-gup_benchemark-add-longterm_benchmark-test-in-gup-fast-path.patch
