linux-kernel - [PATCH 5/6] Container Freezer: Rename check_if

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Message-Id: <20080819232234.999956217@us.ibm.com>
Date:	Tue, 19 Aug 2008 16:22:37 -0700
From:	Matt Helsley <matthltc@...ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Paul Menage <menage@...gle.com>,
	Li Zefan <lizf@...fujitsu.com>,
	Linux-Kernel <linux-kernel@...r.kernel.org>,
	Linux Containers <containers@...ts.linux-foundation.org>,
	linux-pm@...ts.linux-foundation.org
Subject: [PATCH 5/6] Container Freezer: Rename check_if_frozen()

check_if_frozen() sounds like it should return something when in fact it's just
updating the freezer state.

Signed-off-by: Matt Helsley <matthltc@...ibm.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 kernel/cgroup_freezer.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

Index: linux-2.6.27-rc1-mm1/kernel/cgroup_freezer.c
===================================================================
--- linux-2.6.27-rc1-mm1.orig/kernel/cgroup_freezer.c
+++ linux-2.6.27-rc1-mm1/kernel/cgroup_freezer.c
@@ -201,8 +201,8 @@ static void freezer_fork(struct cgroup_s
 /*
  * caller must hold freezer->lock
  */
-static void check_if_frozen(struct cgroup *cgroup,
-			     struct freezer *freezer)
+static void update_freezer_state(struct cgroup *cgroup,
+				 struct freezer *freezer)
 {
 	struct cgroup_iter it;
 	struct task_struct *task;
@@ -222,6 +222,10 @@ static void check_if_frozen(struct cgrou
 	 */
 	if (nfrozen == ntotal)
 		freezer->state = CGROUP_FROZEN;
+	else if (nfrozen > 0)
+		freezer->state = CGROUP_FREEZING;
+	else
+		freezer->state = CGROUP_THAWED;
 	cgroup_iter_end(cgroup, &it);
 }
 
@@ -240,7 +244,7 @@ static int freezer_read(struct cgroup *c
 	if (state == CGROUP_FREEZING) {
 		/* We change from FREEZING to FROZEN lazily if the cgroup was
 		 * only partially frozen when we exitted write. */
-		check_if_frozen(cgroup, freezer);
+		update_freezer_state(cgroup, freezer);
 		state = freezer->state;
 	}
 	spin_unlock_irq(&freezer->lock);
@@ -301,7 +305,7 @@ static int freezer_change_state(struct c
 
 	freezer = cgroup_freezer(cgroup);
 	spin_lock_irq(&freezer->lock);
-	check_if_frozen(cgroup, freezer); /* may update freezer->state */
+	update_freezer_state(cgroup, freezer);
 	if (goal_state == freezer->state)
 		goto out;
 	switch (freezer->state) {

-- 
--
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