[PATCH 12/23] containers: bdi init hooks

[Peter Zijlstra]

split off from the large bdi_init patch because containers are not slated
for mainline any time soon.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
---
 kernel/container.c |   14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

Index: linux-2.6/kernel/container.c
===================================================================
--- linux-2.6.orig/kernel/container.c
+++ linux-2.6/kernel/container.c
@@ -567,12 +567,13 @@ static int container_populate_dir(struct
 static struct inode_operations container_dir_inode_operations;
 static struct file_operations proc_containerstats_operations;
 
+static struct backing_dev_info container_backing_dev_info = {
+	.capabilities	= BDI_CAP_NO_ACCT_DIRTY | BDI_CAP_NO_WRITEBACK,
+};
+
 static struct inode *container_new_inode(mode_t mode, struct super_block *sb)
 {
 	struct inode *inode = new_inode(sb);
-	static struct backing_dev_info container_backing_dev_info = {
-		.capabilities	= BDI_CAP_NO_ACCT_DIRTY | BDI_CAP_NO_WRITEBACK,
-	};
 
 	if (inode) {
 		inode->i_mode = mode;
@@ -2261,6 +2262,10 @@ int __init container_init(void)
 	int i;
 	struct proc_dir_entry *entry;
 
+	err = bdi_init(&container_backing_dev_info);
+	if (err)
+		return err;
+
 	for (i = 0; i < CONTAINER_SUBSYS_COUNT; i++) {
 		struct container_subsys *ss = subsys[i];
 		if (!ss->early_init)
@@ -2276,6 +2281,9 @@ int __init container_init(void)
 		entry->proc_fops = &proc_containerstats_operations;
 
 out:
+	if (err)
+		bdi_destroy(&container_backing_dev_info);
+
 	return err;
 }
 

--

-
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