The patch titled
freezer_cg: remove redundant check in freezer_can_attach()
has been removed from the -mm tree. Its filename was
freezer_cg-remove-redundant-check-in-freezer_can_attach.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: freezer_cg: remove redundant check in freezer_can_attach()
From: Li Zefan <lizf@xxxxxxxxxxxxxx>
It is sufficient to check if @task is frozen, and no need to check if the
original freezer is frozen.
Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxx>
Acked-by: Cedric Le Goater <clg@xxxxxxxxxx>
Acked-by: Matt Helsley <matthltc@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/cgroup_freezer.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
diff -puN kernel/cgroup_freezer.c~freezer_cg-remove-redundant-check-in-freezer_can_attach kernel/cgroup_freezer.c
--- a/kernel/cgroup_freezer.c~freezer_cg-remove-redundant-check-in-freezer_can_attach
+++ a/kernel/cgroup_freezer.c
@@ -162,9 +162,13 @@ static int freezer_can_attach(struct cgr
struct task_struct *task)
{
struct freezer *freezer;
- int retval;
- /* Anything frozen can't move or be moved to/from */
+ /*
+ * Anything frozen can't move or be moved to/from.
+ *
+ * Since orig_freezer->state == FROZEN means that @task has been
+ * frozen, so it's sufficient to check the latter condition.
+ */
if (is_task_frozen_enough(task))
return -EBUSY;
@@ -173,13 +177,7 @@ static int freezer_can_attach(struct cgr
if (freezer->state == CGROUP_FROZEN)
return -EBUSY;
- retval = 0;
- task_lock(task);
- freezer = task_freezer(task);
- if (freezer->state == CGROUP_FROZEN)
- retval = -EBUSY;
- task_unlock(task);
- return retval;
+ return 0;
}
static void freezer_fork(struct cgroup_subsys *ss, struct task_struct *task)
_
Patches currently in -mm which might be from lizf@xxxxxxxxxxxxxx are
cgroups-fix-invalid-cgrp-dentry-before-cgroup-has-been-completely-removed.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
