The patch titled
cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-fix2
has been added to the -mm tree. Its filename is
cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-fix2.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-fix2
From: Miao Xie <miaox@xxxxxxxxxxxxxx>
- cleanup unnecessary header file
- fix the race between set_mempolicy() and cpuset_change_task_nodemask()
Signed-off-by: Miao Xie <miaox@xxxxxxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
Cc: Miao Xie <miaox@xxxxxxxxxxxxxx>
Cc: Nick Piggin <npiggin@xxxxxxx>
Cc: Paul Menage <menage@xxxxxxxxxx>
Cc: Ravikiran Thirumalai <kiran@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/cpuset.c | 3 +--
kernel/exit.c | 1 -
kernel/fork.c | 1 -
3 files changed, 1 insertion(+), 4 deletions(-)
diff -puN kernel/cpuset.c~cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-fix2 kernel/cpuset.c
--- a/kernel/cpuset.c~cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-fix2
+++ a/kernel/cpuset.c
@@ -963,7 +963,6 @@ repeat:
task_lock(tsk);
nodes_or(tsk->mems_allowed, tsk->mems_allowed, *newmems);
mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP1);
- task_unlock(tsk);
/*
@@ -985,6 +984,7 @@ repeat:
* for the read-side.
*/
while (ACCESS_ONCE(tsk->mems_allowed_change_disable)) {
+ task_unlock(tsk);
if (!task_curr(tsk))
yield();
goto repeat;
@@ -999,7 +999,6 @@ repeat:
*/
smp_mb();
- task_lock(tsk);
mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP2);
tsk->mems_allowed = *newmems;
task_unlock(tsk);
diff -puN kernel/exit.c~cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-fix2 kernel/exit.c
--- a/kernel/exit.c~cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-fix2
+++ a/kernel/exit.c
@@ -16,7 +16,6 @@
#include <linux/key.h>
#include <linux/security.h>
#include <linux/cpu.h>
-#include <linux/cpuset.h>
#include <linux/acct.h>
#include <linux/tsacct_kern.h>
#include <linux/file.h>
diff -puN kernel/fork.c~cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-fix2 kernel/fork.c
--- a/kernel/fork.c~cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-fix2
+++ a/kernel/fork.c
@@ -31,7 +31,6 @@
#include <linux/nsproxy.h>
#include <linux/capability.h>
#include <linux/cpu.h>
-#include <linux/cpuset.h>
#include <linux/cgroup.h>
#include <linux/security.h>
#include <linux/hugetlb.h>
_
Patches currently in -mm which might be from miaox@xxxxxxxxxxxxxx are
mempolicy-restructure-rebinding-mempolicy-functions.patch
cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems.patch
cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-fix.patch
cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-fix2.patch
cpusetmm-fix-no-node-to-alloc-memory-when-changing-cpusets-mems-spelling.patch
--
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