The patch titled
Subject: cgroups: new resource counter inheritance API
has been removed from the -mm tree. Its filename was
cgroups-new-resource-counter-inheritance-api.patch
This patch was dropped because it is obsolete
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Subject: cgroups: new resource counter inheritance API
Provide an API to inherit a counter value from a parent. This can be
useful to implement cgroup.clone_children on a resource counter.
Still the resources of the children are limited by those of the parent, so
this is only to provide a default setting behaviour when clone_children is
set.
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Paul Menage <paul@xxxxxxxxxxxxxx>
Cc: Li Zefan <lizf@xxxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Aditya Kali <adityakali@xxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Kay Sievers <kay.sievers@xxxxxxxx>
Cc: Tim Hockin <thockin@xxxxxxxxxx>
Cc: Tejun Heo <htejun@xxxxxxxxx>
Acked-by: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/res_counter.h | 2 ++
kernel/res_counter.c | 18 ++++++++++++++++++
2 files changed, 20 insertions(+)
diff -puN include/linux/res_counter.h~cgroups-new-resource-counter-inheritance-api include/linux/res_counter.h
--- a/include/linux/res_counter.h~cgroups-new-resource-counter-inheritance-api
+++ a/include/linux/res_counter.h
@@ -84,6 +84,8 @@ int res_counter_write(struct res_counter
void res_counter_write_u64(struct res_counter *counter, int member, u64 val);
+void res_counter_inherit(struct res_counter *counter, int member);
+
/*
* the field descriptors. one for each member of res_counter
*/
diff -puN kernel/res_counter.c~cgroups-new-resource-counter-inheritance-api kernel/res_counter.c
--- a/kernel/res_counter.c~cgroups-new-resource-counter-inheritance-api
+++ a/kernel/res_counter.c
@@ -202,3 +202,21 @@ int res_counter_write(struct res_counter
return 0;
}
+
+/*
+ * Simple inheritance implementation to get the same value
+ * than a parent. However this doesn't enforce the child value
+ * to be always below the one of the parent. But the child is
+ * subject to its parent limitation anyway.
+ */
+void res_counter_inherit(struct res_counter *counter, int member)
+{
+ struct res_counter *parent;
+ unsigned long long val;
+
+ parent = counter->parent;
+ if (parent) {
+ val = res_counter_read_u64(parent, member);
+ res_counter_write_u64(counter, member, val);
+ }
+}
_
Patches currently in -mm which might be from fweisbec@xxxxxxxxx are
linux-next.patch
reiserfs-delay-reiserfs-lock-until-journal-initialization.patch
reiserfs-dont-lock-journal_init.patch
reiserfs-dont-lock-root-inode-searching.patch
cgroups-add-previous-cgroup-in-can_attach_task-attach_task-callbacks.patch
cgroups-new-cancel_attach_task-subsystem-callback.patch
cgroups-ability-to-stop-res-charge-propagation-on-bounded-ancestor.patch
cgroups-add-res-counter-common-ancestor-searching.patch
res_counter-allow-charge-failure-pointer-to-be-null.patch
cgroups-pull-up-res-counter-charge-failure-interpretation-to-caller.patch
cgroups-allow-subsystems-to-cancel-a-fork.patch
cgroups-add-a-task-counter-subsystem.patch
cgroups-add-a-task-counter-subsystem-fix.patch
cgroup-fix-task-counter-common-ancestor-logic.patch
cgroup-fix-task-counter-common-ancestor-logic-checkpatch-fixes.patch
selftests-new-very-basic-kernel-selftests-directory.patch
selftests-new-x86-breakpoints-selftest.patch
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