f2fs: add a condition to detect overflow in f2fs_ioc_gc_range()

[linux.git] / fs / super.c

diff --git a/fs/super.c b/fs/super.c
index 3318225b087805eea9db0c71314fec248486411a..5960578a40760a26bc0ecd88e28177ce748f4380 100644 (file)
--- a/fs/super.c
+++ b/fs/super.c
@@ -478,13 +478,10 @@ EXPORT_SYMBOL(generic_shutdown_super);
 
 bool mount_capable(struct fs_context *fc)
 {
-       struct user_namespace *user_ns = fc->global ? &init_user_ns
-                                                   : fc->user_ns;
-
        if (!(fc->fs_type->fs_flags & FS_USERNS_MOUNT))
                return capable(CAP_SYS_ADMIN);
        else
-               return ns_capable(user_ns, CAP_SYS_ADMIN);
+               return ns_capable(fc->user_ns, CAP_SYS_ADMIN);
 }
 
 /**
@@ -1206,6 +1203,14 @@ int get_tree_nodev(struct fs_context *fc,
 }
 EXPORT_SYMBOL(get_tree_nodev);
 
+int get_tree_single(struct fs_context *fc,
+                 int (*fill_super)(struct super_block *sb,
+                                   struct fs_context *fc))
+{
+       return vfs_get_super(fc, vfs_get_single_super, fill_super);
+}
+EXPORT_SYMBOL(get_tree_single);
+
 #ifdef CONFIG_BLOCK
 static int set_bdev_super(struct super_block *s, void *data)
 {