From: ira.weiny@intel.com
To: Andrew Morton <akpm@linux-foundation.org>,
John Hubbard <jhubbard@nvidia.com>,
Michal Hocko <mhocko@suse.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Jason Gunthorpe <jgg@ziepe.ca>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
"David S. Miller" <davem@davemloft.net>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Rich Felker <dalias@libc.org>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Ralf Baechle <ralf@linux-mips.org>,
James Hogan <jhogan@kernel.org>
Cc: Ira Weiny <ira.weiny@intel.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
sparclinux@vger.kernel.org, linux-rdma@vger.kernel.org,
netdev@vger.kernel.org
Subject: [PATCH V3 5/7] IB/hfi1: Use the new FOLL_LONGTERM flag to get_user_pages_fast()
Date: Thu, 28 Mar 2019 08:44:20 +0000 [thread overview]
Message-ID: <20190328084422.29911-6-ira.weiny@intel.com> (raw)
In-Reply-To: <20190328084422.29911-1-ira.weiny@intel.com>
From: Ira Weiny <ira.weiny@intel.com>
Use the new FOLL_LONGTERM to get_user_pages_fast() to protect against
FS DAX pages being mapped.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
Changes from V2
Per Dan Williams: set FOLL_LONGTERM on declaration line
drivers/infiniband/hw/hfi1/user_pages.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/user_pages.c b/drivers/infiniband/hw/hfi1/user_pages.c
index 78ccacaf97d0..02eee8eff1db 100644
--- a/drivers/infiniband/hw/hfi1/user_pages.c
+++ b/drivers/infiniband/hw/hfi1/user_pages.c
@@ -104,9 +104,9 @@ int hfi1_acquire_user_pages(struct mm_struct *mm, unsigned long vaddr, size_t np
bool writable, struct page **pages)
{
int ret;
+ unsigned int gup_flags = FOLL_LONGTERM | (writable ? FOLL_WRITE : 0);
- ret = get_user_pages_fast(vaddr, npages, writable ? FOLL_WRITE : 0,
- pages);
+ ret = get_user_pages_fast(vaddr, npages, gup_flags, pages);
if (ret < 0)
return ret;
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: ira.weiny@intel.com
To: Andrew Morton <akpm@linux-foundation.org>,
John Hubbard <jhubbard@nvidia.com>,
Michal Hocko <mhocko@suse.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Jason Gunthorpe <jgg@ziepe.ca>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
"David S. Miller" <davem@davemloft.net>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Rich Felker <dalias@libc.org>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Ralf Baechle <ralf@linux-mips.org>,
James Hogan <jhogan@kernel.org>
Cc: Ira Weiny <ira.weiny@intel.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
sparclinux@vger.kernel.org, linux-rdma@vger.kernel.org,
netdev@vger.kernel.org
Subject: [PATCH V3 5/7] IB/hfi1: Use the new FOLL_LONGTERM flag to get_user_pages_fast()
Date: Thu, 28 Mar 2019 01:44:20 -0700 [thread overview]
Message-ID: <20190328084422.29911-6-ira.weiny@intel.com> (raw)
In-Reply-To: <20190328084422.29911-1-ira.weiny@intel.com>
From: Ira Weiny <ira.weiny@intel.com>
Use the new FOLL_LONGTERM to get_user_pages_fast() to protect against
FS DAX pages being mapped.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
Changes from V2
Per Dan Williams: set FOLL_LONGTERM on declaration line
drivers/infiniband/hw/hfi1/user_pages.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/user_pages.c b/drivers/infiniband/hw/hfi1/user_pages.c
index 78ccacaf97d0..02eee8eff1db 100644
--- a/drivers/infiniband/hw/hfi1/user_pages.c
+++ b/drivers/infiniband/hw/hfi1/user_pages.c
@@ -104,9 +104,9 @@ int hfi1_acquire_user_pages(struct mm_struct *mm, unsigned long vaddr, size_t np
bool writable, struct page **pages)
{
int ret;
+ unsigned int gup_flags = FOLL_LONGTERM | (writable ? FOLL_WRITE : 0);
- ret = get_user_pages_fast(vaddr, npages, writable ? FOLL_WRITE : 0,
- pages);
+ ret = get_user_pages_fast(vaddr, npages, gup_flags, pages);
if (ret < 0)
return ret;
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: ira.weiny@intel.com
To: Andrew Morton <akpm@linux-foundation.org>,
John Hubbard <jhubbard@nvidia.com>,
Michal Hocko <mhocko@suse.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Jason Gunthorpe <jgg@ziepe.ca>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
"David S. Miller" <davem@davemloft.net>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Rich Felker <dalias@libc.org>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Ralf Baechle <ralf@linux-mips.org>,
James Hogan <jhogan@kernel.org>
Cc: linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
linux-rdma@vger.kernel.org, Ira Weiny <ira.weiny@intel.com>,
linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
linux-mm@kvack.org, netdev@vger.kernel.org,
sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH V3 5/7] IB/hfi1: Use the new FOLL_LONGTERM flag to get_user_pages_fast()
Date: Thu, 28 Mar 2019 01:44:20 -0700 [thread overview]
Message-ID: <20190328084422.29911-6-ira.weiny@intel.com> (raw)
In-Reply-To: <20190328084422.29911-1-ira.weiny@intel.com>
From: Ira Weiny <ira.weiny@intel.com>
Use the new FOLL_LONGTERM to get_user_pages_fast() to protect against
FS DAX pages being mapped.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
Changes from V2
Per Dan Williams: set FOLL_LONGTERM on declaration line
drivers/infiniband/hw/hfi1/user_pages.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/user_pages.c b/drivers/infiniband/hw/hfi1/user_pages.c
index 78ccacaf97d0..02eee8eff1db 100644
--- a/drivers/infiniband/hw/hfi1/user_pages.c
+++ b/drivers/infiniband/hw/hfi1/user_pages.c
@@ -104,9 +104,9 @@ int hfi1_acquire_user_pages(struct mm_struct *mm, unsigned long vaddr, size_t np
bool writable, struct page **pages)
{
int ret;
+ unsigned int gup_flags = FOLL_LONGTERM | (writable ? FOLL_WRITE : 0);
- ret = get_user_pages_fast(vaddr, npages, writable ? FOLL_WRITE : 0,
- pages);
+ ret = get_user_pages_fast(vaddr, npages, gup_flags, pages);
if (ret < 0)
return ret;
--
2.20.1
next prev parent reply other threads:[~2019-03-28 8:44 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-28 8:44 [PATCH V3 0/7] Add FOLL_LONGTERM to GUP fast and use it ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` [PATCH V3 1/7] mm/gup: Replace get_user_pages_longterm() with FOLL_LONGTERM ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` [PATCH V3 2/7] mm/gup: Change write parameter to flags in fast walk ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` [PATCH V3 3/7] mm/gup: Change GUP fast to use flags rather than a write 'bool' ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` [PATCH V3 4/7] mm/gup: Add FOLL_LONGTERM capability to GUP fast ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` ira.weiny [this message]
2019-03-28 8:44 ` [PATCH V3 5/7] IB/hfi1: Use the new FOLL_LONGTERM flag to get_user_pages_fast() ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` [PATCH V3 6/7] IB/qib: " ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` [PATCH V3 7/7] IB/mthca: " ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-03-28 8:44 ` ira.weiny
2019-04-09 0:13 ` [PATCH V3 0/7] Add FOLL_LONGTERM to GUP fast and use it Ira Weiny
2019-04-09 0:13 ` Ira Weiny
2019-04-09 0:13 ` Ira Weiny
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