diff options
Diffstat (limited to 'fs/9p/vfs_super.c')
| -rw-r--r-- | fs/9p/vfs_super.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c index 5f8ab8adb5f5..7d23214e5599 100644 --- a/fs/9p/vfs_super.c +++ b/fs/9p/vfs_super.c @@ -37,6 +37,7 @@ #include <linux/mount.h> #include <linux/idr.h> #include <linux/sched.h> +#include <linux/smp_lock.h> #include <net/9p/9p.h> #include <net/9p/client.h> @@ -230,9 +231,12 @@ static int v9fs_show_options(struct seq_file *m, struct vfsmount *mnt) static void v9fs_umount_begin(struct super_block *sb) { - struct v9fs_session_info *v9ses = sb->s_fs_info; + struct v9fs_session_info *v9ses; + lock_kernel(); + v9ses = sb->s_fs_info; v9fs_session_cancel(v9ses); + unlock_kernel(); } static const struct super_operations v9fs_super_ops = { |