diff options
| -rw-r--r-- | fs/namespace.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 4740f7bdb556..b94325f00c5a 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1515,8 +1515,11 @@ static int do_remount(struct path *path, int flags, int mnt_flags, down_write(&sb->s_umount); if (flags & MS_BIND) err = change_mount_flags(path->mnt, flags); - else + else { + lock_kernel(); err = do_remount_sb(sb, flags, data, 0); + unlock_kernel(); + } if (!err) path->mnt->mnt_flags = mnt_flags; up_write(&sb->s_umount); @@ -1630,7 +1633,9 @@ static int do_new_mount(struct path *path, char *type, int flags, if (!capable(CAP_SYS_ADMIN)) return -EPERM; + lock_kernel(); mnt = do_kern_mount(type, flags, name, data); + unlock_kernel(); if (IS_ERR(mnt)) return PTR_ERR(mnt); @@ -1921,7 +1926,6 @@ long do_mount(char *dev_name, char *dir_name, char *type_page, if (retval) goto dput_out; - lock_kernel(); if (flags & MS_REMOUNT) retval = do_remount(&path, flags & ~MS_REMOUNT, mnt_flags, data_page); @@ -1934,7 +1938,6 @@ long do_mount(char *dev_name, char *dir_name, char *type_page, else retval = do_new_mount(&path, type_page, flags, mnt_flags, dev_name, data_page); - unlock_kernel(); dput_out: path_put(&path); return retval; |