[merged] mm-fix-mem_cgroup_oom_disable-call-missing.patch removed from -mm tree

[merged] mm-fix-mem_cgroup_oom_disable-call-missing.patch removed from -mm tree

[akpm]

The patch titled
     Subject: mm/memory.c: fix mem_cgroup_oom_disable() call missing
has been removed from the -mm tree.  Its filename was
     mm-fix-mem_cgroup_oom_disable-call-missing.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Subject: mm/memory.c: fix mem_cgroup_oom_disable() call missing

Seen while reading the code, in handle_mm_fault(), in the case
arch_vma_access_permitted() is failing the call to
mem_cgroup_oom_disable() is not made.

To fix that, move the call to mem_cgroup_oom_enable() after calling
arch_vma_access_permitted() as it should not have entered the memcg OOM.

Link: http://lkml.kernel.org/r/1504625439-31313-1-git-send-email-ldufour@linux.vnet.ibm.com
Fixes: bae473a423f6 ("mm: introduce fault_env")
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff -puN mm/memory.c~mm-fix-mem_cgroup_oom_disable-call-missing mm/memory.c
--- a/mm/memory.c~mm-fix-mem_cgroup_oom_disable-call-missing
+++ a/mm/memory.c
@@ -4053,6 +4053,11 @@ int handle_mm_fault(struct vm_area_struc
 	/* do counter updates before entering really critical section. */
 	check_sync_rss_stat(current);
 
+	if (!arch_vma_access_permitted(vma, flags & FAULT_FLAG_WRITE,
+					    flags & FAULT_FLAG_INSTRUCTION,
+					    flags & FAULT_FLAG_REMOTE))
+		return VM_FAULT_SIGSEGV;
+
 	/*
 	 * Enable the memcg OOM handling for faults triggered in user
 	 * space.  Kernel faults are handled more gracefully.
@@ -4060,11 +4065,6 @@ int handle_mm_fault(struct vm_area_struc
 	if (flags & FAULT_FLAG_USER)
 		mem_cgroup_oom_enable();
 
-	if (!arch_vma_access_permitted(vma, flags & FAULT_FLAG_WRITE,
-					    flags & FAULT_FLAG_INSTRUCTION,
-					    flags & FAULT_FLAG_REMOTE))
-		return VM_FAULT_SIGSEGV;

[merged] mm-fix-mem_cgroup_oom_disable-call-missing.patch removed from -mm tree

[akpm]

The patch titled
     Subject: mm/memory.c: fix mem_cgroup_oom_disable() call missing
has been removed from the -mm tree.  Its filename was
     mm-fix-mem_cgroup_oom_disable-call-missing.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Subject: mm/memory.c: fix mem_cgroup_oom_disable() call missing

Seen while reading the code, in handle_mm_fault(), in the case
arch_vma_access_permitted() is failing the call to
mem_cgroup_oom_disable() is not made.

To fix that, move the call to mem_cgroup_oom_enable() after calling
arch_vma_access_permitted() as it should not have entered the memcg OOM.

Link: http://lkml.kernel.org/r/1504625439-31313-1-git-send-email-ldufour@linux.vnet.ibm.com
Fixes: bae473a423f6 ("mm: introduce fault_env")
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff -puN mm/memory.c~mm-fix-mem_cgroup_oom_disable-call-missing mm/memory.c
--- a/mm/memory.c~mm-fix-mem_cgroup_oom_disable-call-missing
+++ a/mm/memory.c
@@ -4053,6 +4053,11 @@ int handle_mm_fault(struct vm_area_struc
 	/* do counter updates before entering really critical section. */
 	check_sync_rss_stat(current);
 
+	if (!arch_vma_access_permitted(vma, flags & FAULT_FLAG_WRITE,
+					    flags & FAULT_FLAG_INSTRUCTION,
+					    flags & FAULT_FLAG_REMOTE))
+		return VM_FAULT_SIGSEGV;
+
 	/*
 	 * Enable the memcg OOM handling for faults triggered in user
 	 * space.  Kernel faults are handled more gracefully.
@@ -4060,11 +4065,6 @@ int handle_mm_fault(struct vm_area_struc
 	if (flags & FAULT_FLAG_USER)
 		mem_cgroup_oom_enable();
 
-	if (!arch_vma_access_permitted(vma, flags & FAULT_FLAG_WRITE,
-					    flags & FAULT_FLAG_INSTRUCTION,
-					    flags & FAULT_FLAG_REMOTE))
-		return VM_FAULT_SIGSEGV;
-
 	if (unlikely(is_vm_hugetlb_page(vma)))
 		ret = hugetlb_fault(vma->vm_mm, vma, address, flags);
 	else
_

Patches currently in -mm which might be from ldufour@linux.vnet.ibm.com are

mm-skip-hwpoisoned-pages-when-onlining-pages.patch