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authorJan Blunck <jblunck@infradead.org>2010-02-24 13:25:34 +0100
committerArnd Bergmann <arnd@arndb.de>2010-10-04 21:10:42 +0200
commit38d018dba3f725b969f196550d92a6ec1c092428 (patch)
tree3699b1b32aa5b6f42e323690299ba60f1b32b981 /kernel
parentefdffb54034a6fc96bc7fafa33ca2a5503113eee (diff)
downloadop-kernel-dev-38d018dba3f725b969f196550d92a6ec1c092428.zip
op-kernel-dev-38d018dba3f725b969f196550d92a6ec1c092428.tar.gz
BKL: Remove BKL from cgroup
The BKL is only used in remount_fs and get_sb that are both protected by the superblocks s_umount rw_semaphore. Therefore it is safe to remove the BKL entirely. Signed-off-by: Jan Blunck <jblunck@infradead.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cgroup.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index a7ba3bc..304d2775 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -52,7 +52,6 @@
#include <linux/cgroupstats.h>
#include <linux/hash.h>
#include <linux/namei.h>
-#include <linux/smp_lock.h>
#include <linux/pid_namespace.h>
#include <linux/idr.h>
#include <linux/vmalloc.h> /* TODO: replace with more sophisticated array */
@@ -1222,7 +1221,6 @@ static int cgroup_remount(struct super_block *sb, int *flags, char *data)
struct cgroup *cgrp = &root->top_cgroup;
struct cgroup_sb_opts opts;
- lock_kernel();
mutex_lock(&cgrp->dentry->d_inode->i_mutex);
mutex_lock(&cgroup_mutex);
@@ -1255,7 +1253,6 @@ static int cgroup_remount(struct super_block *sb, int *flags, char *data)
kfree(opts.name);
mutex_unlock(&cgroup_mutex);
mutex_unlock(&cgrp->dentry->d_inode->i_mutex);
- unlock_kernel();
return ret;
}
@@ -1430,8 +1427,6 @@ static int cgroup_get_sb(struct file_system_type *fs_type,
struct super_block *sb;
struct cgroupfs_root *new_root;
- lock_kernel();
-
/* First find the desired set of subsystems */
mutex_lock(&cgroup_mutex);
ret = parse_cgroupfs_options(data, &opts);
@@ -1561,7 +1556,6 @@ static int cgroup_get_sb(struct file_system_type *fs_type,
simple_set_mnt(mnt, sb);
kfree(opts.release_agent);
kfree(opts.name);
- unlock_kernel();
return 0;
drop_new_super:
@@ -1571,8 +1565,6 @@ static int cgroup_get_sb(struct file_system_type *fs_type,
out_err:
kfree(opts.release_agent);
kfree(opts.name);
- unlock_kernel();
-
return ret;
}
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