From: Pavel Tatashin <pasha.tatashin@soleen.com>
To: pasha.tatashin@soleen.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, akpm@linux-foundation.org, vbabka@suse.cz,
mhocko@suse.com, david@redhat.com, osalvador@suse.de,
dan.j.williams@intel.com, sashal@kernel.org,
tyhicks@linux.microsoft.com, iamjoonsoo.kim@lge.com,
mike.kravetz@oracle.com, rostedt@goodmis.org, mingo@redhat.com,
jgg@ziepe.ca, peterz@infradead.org, mgorman@suse.de,
willy@infradead.org, rientjes@google.com, jhubbard@nvidia.com,
linux-doc@vger.kernel.org, ira.weiny@intel.com,
linux-kselftest@vger.kernel.org, jmorris@namei.org
Subject: [PATCH v8 11/14] mm/gup: change index type to long as it counts pages
Date: Mon, 25 Jan 2021 14:47:48 -0500 [thread overview]
Message-ID: <20210125194751.1275316-12-pasha.tatashin@soleen.com> (raw)
In-Reply-To: <20210125194751.1275316-1-pasha.tatashin@soleen.com>
In __get_user_pages_locked() i counts number of pages which should be
long, as long is used in all other places to contain number of pages, and
32-bit becomes increasingly small for handling page count proportional
values.
Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Acked-by: Michal Hocko <mhocko@suse.com>
---
mm/gup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/gup.c b/mm/gup.c
index df29825305f8..f98af75dab0f 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1479,7 +1479,7 @@ static long __get_user_pages_locked(struct mm_struct *mm, unsigned long start,
{
struct vm_area_struct *vma;
unsigned long vm_flags;
- int i;
+ long i;
/* calculate required read or write permissions.
* If FOLL_FORCE is set, we only require the "MAY" flags.
--
2.25.1
next prev parent reply other threads:[~2021-01-25 19:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-25 19:47 [PATCH v8 00/14] prohibit pinning pages in ZONE_MOVABLE Pavel Tatashin
2021-01-25 19:47 ` [PATCH v8 01/14] mm/gup: don't pin migrated cma pages in movable zone Pavel Tatashin
2021-01-25 19:47 ` [PATCH v8 02/14] mm/gup: check every subpage of a compound page during isolation Pavel Tatashin
2021-02-03 13:22 ` Joao Martins
2021-02-03 14:51 ` Pavel Tatashin
2021-02-03 15:32 ` Joao Martins
2021-02-03 16:46 ` Joao Martins
2021-02-03 14:53 ` Jason Gunthorpe
2021-02-03 16:13 ` Joao Martins
2021-02-03 18:00 ` Jason Gunthorpe
2021-01-25 19:47 ` [PATCH v8 03/14] mm/gup: return an error on migration failure Pavel Tatashin
2021-01-25 19:47 ` [PATCH v8 04/14] mm/gup: check for isolation errors Pavel Tatashin
2021-01-25 19:47 ` [PATCH v8 05/14] mm cma: rename PF_MEMALLOC_NOCMA to PF_MEMALLOC_PIN Pavel Tatashin
2021-01-25 19:47 ` [PATCH v8 06/14] mm: apply per-task gfp constraints in fast path Pavel Tatashin
2021-01-25 19:47 ` [PATCH v8 07/14] mm: honor PF_MEMALLOC_PIN for all movable pages Pavel Tatashin
[not found] ` <20210131130903.4875-1-lecopzer@gmail.com>
2021-01-31 16:03 ` Pavel Tatashin
2021-01-25 19:47 ` [PATCH v8 08/14] mm/gup: do not migrate zero page Pavel Tatashin
2021-01-25 19:47 ` [PATCH v8 09/14] mm/gup: migrate pinned pages out of movable zone Pavel Tatashin
2021-01-25 19:47 ` [PATCH v8 10/14] memory-hotplug.rst: add a note about ZONE_MOVABLE and page pinning Pavel Tatashin
2021-01-25 19:47 ` Pavel Tatashin [this message]
2021-01-25 19:47 ` [PATCH v8 12/14] mm/gup: longterm pin migration cleanup Pavel Tatashin
2021-01-25 19:47 ` [PATCH v8 13/14] selftests/vm: gup_test: fix test flag Pavel Tatashin
2021-01-25 19:47 ` [PATCH v8 14/14] selftests/vm: gup_test: test faulting in kernel, and verify pinnable pages Pavel Tatashin
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