linux-kernel - [GIT PULL] x86/mm change for v5.1

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20190307195400.GA72443@gmail.com>
Date:   Thu, 7 Mar 2019 20:54:00 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] x86/mm change for v5.1

Linus,

Please pull the latest x86-mm-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-mm-for-linus

   # HEAD: ad8cfb9c42ef83ecf4079bc7d77e6557648e952b mm/gup: Remove the 'write' parameter from gup_fast_permitted()

A single GUP cleanup.

  out-of-topic modifications in x86-mm-for-linus:
  -------------------------------------------------
  mm/gup.c                           # ad8cfb9c42ef: mm/gup: Remove the 'write' p

 Thanks,

	Ingo

------------------>
Ira Weiny (1):
      mm/gup: Remove the 'write' parameter from gup_fast_permitted()


 arch/x86/include/asm/pgtable_64.h | 3 +--
 mm/gup.c                          | 6 +++---
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h
index 9c85b54bf03c..0bb566315621 100644
--- a/arch/x86/include/asm/pgtable_64.h
+++ b/arch/x86/include/asm/pgtable_64.h
@@ -259,8 +259,7 @@ extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
 extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
 
 #define gup_fast_permitted gup_fast_permitted
-static inline bool gup_fast_permitted(unsigned long start, int nr_pages,
-		int write)
+static inline bool gup_fast_permitted(unsigned long start, int nr_pages)
 {
 	unsigned long len, end;
 
diff --git a/mm/gup.c b/mm/gup.c
index 05acd7e2eb22..b63e88eca31b 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1786,7 +1786,7 @@ static void gup_pgd_range(unsigned long addr, unsigned long end,
  * Check if it's allowed to use __get_user_pages_fast() for the range, or
  * we need to fall back to the slow version:
  */
-bool gup_fast_permitted(unsigned long start, int nr_pages, int write)
+bool gup_fast_permitted(unsigned long start, int nr_pages)
 {
 	unsigned long len, end;
 
@@ -1828,7 +1828,7 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
 	 * block IPIs that come from THPs splitting.
 	 */
 
-	if (gup_fast_permitted(start, nr_pages, write)) {
+	if (gup_fast_permitted(start, nr_pages)) {
 		local_irq_save(flags);
 		gup_pgd_range(start, end, write, pages, &nr);
 		local_irq_restore(flags);
@@ -1870,7 +1870,7 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
 	if (unlikely(!access_ok((void __user *)start, len)))
 		return -EFAULT;
 
-	if (gup_fast_permitted(start, nr_pages, write)) {
+	if (gup_fast_permitted(start, nr_pages)) {
 		local_irq_disable();
 		gup_pgd_range(addr, end, write, pages, &nr);
 		local_irq_enable();