All of lore.kernel.org
 help / color / mirror / Atom feed
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
Subject: [PATCH v6 11/14] mm/gup: change index type to long as it counts pages
Date: Tue, 19 Jan 2021 20:43:30 -0500	[thread overview]
Message-ID: <20210120014333.222547-12-pasha.tatashin@soleen.com> (raw)
In-Reply-To: <20210120014333.222547-1-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 668795e5a816..c7abd5b37150 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


  parent reply	other threads:[~2021-01-20  1:48 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-20  1:43 [PATCH v6 00/14] prohibit pinning pages in ZONE_MOVABLE Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 01/14] mm/gup: don't pin migrated cma pages in movable zone Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 02/14] mm/gup: check every subpage of a compound page during isolation Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 03/14] mm/gup: return an error on migration failure Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 04/14] mm/gup: check for isolation errors Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 05/14] mm cma: rename PF_MEMALLOC_NOCMA to PF_MEMALLOC_PIN Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 06/14] mm: apply per-task gfp constraints in fast path Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 07/14] mm: honor PF_MEMALLOC_PIN for all movable pages Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 08/14] mm/gup: do not migrate zero page Pavel Tatashin
2021-01-20 13:14   ` Jason Gunthorpe
2021-01-20 14:26     ` Pavel Tatashin
2021-01-20 14:26       ` Pavel Tatashin
2021-01-25 14:28       ` Jason Gunthorpe
2021-01-25 15:38         ` Pavel Tatashin
2021-01-25 15:38           ` Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 09/14] mm/gup: migrate pinned pages out of movable zone Pavel Tatashin
2021-01-20 17:50   ` kernel test robot
2021-01-20 17:50     ` kernel test robot
2021-01-20 21:31     ` Pavel Tatashin
2021-01-20 21:31       ` Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 10/14] memory-hotplug.rst: add a note about ZONE_MOVABLE and page pinning Pavel Tatashin
2021-01-20 13:22   ` Jason Gunthorpe
2021-01-20 14:28     ` Pavel Tatashin
2021-01-20 14:28       ` Pavel Tatashin
2021-01-20  1:43 ` Pavel Tatashin [this message]
2021-01-20  1:43 ` [PATCH v6 12/14] mm/gup: longterm pin migration cleaup Pavel Tatashin
2021-01-20 13:19   ` Jason Gunthorpe
2021-01-20 14:17     ` Pavel Tatashin
2021-01-20 14:17       ` Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 13/14] selftests/vm: test flag is broken Pavel Tatashin
2021-01-20  1:43 ` [PATCH v6 14/14] selftests/vm: test faulting in kernel, and verify pinnable pages Pavel Tatashin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210120014333.222547-12-pasha.tatashin@soleen.com \
    --to=pasha.tatashin@soleen.com \
    --cc=akpm@linux-foundation.org \
    --cc=dan.j.williams@intel.com \
    --cc=david@redhat.com \
    --cc=iamjoonsoo.kim@lge.com \
    --cc=ira.weiny@intel.com \
    --cc=jgg@ziepe.ca \
    --cc=jhubbard@nvidia.com \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-kselftest@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=mgorman@suse.de \
    --cc=mhocko@suse.com \
    --cc=mike.kravetz@oracle.com \
    --cc=mingo@redhat.com \
    --cc=osalvador@suse.de \
    --cc=peterz@infradead.org \
    --cc=rientjes@google.com \
    --cc=rostedt@goodmis.org \
    --cc=sashal@kernel.org \
    --cc=tyhicks@linux.microsoft.com \
    --cc=vbabka@suse.cz \
    --cc=willy@infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.