From: Fabrice Jouhaud <yargil@free.fr>
Date: Sat, 8 Oct 2011 20:26:03 +0000 (-0400)
Subject: ext4: fix ext4 so it works without CONFIG_PROC_FS
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d44651d0f922b7aaeddd9fc04f2f5700a65983dd;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

ext4: fix ext4 so it works without CONFIG_PROC_FS

This fixes a bug which was introduced in dd68314ccf3fb.  The problem
came from the test of the return value of proc_mkdir which is always
false without procfs, and this would initialization of ext4.

Signed-off-by: Fabrice Jouhaud <yargil@free.fr>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 42f76c64df8c..dcc460537bc7 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3540,10 +3540,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 		goto failed_mount;
 	}
 
-#ifdef CONFIG_PROC_FS
 	if (ext4_proc_root)
 		sbi->s_proc = proc_mkdir(sb->s_id, ext4_proc_root);
-#endif
 
 	bgl_lock_init(sbi->s_blockgroup_lock);
 
@@ -5070,13 +5068,11 @@ static int __init ext4_init_fs(void)
 		return err;
 	err = ext4_init_system_zone();
 	if (err)
-		goto out7;
+		goto out6;
 	ext4_kset = kset_create_and_add("ext4", NULL, fs_kobj);
 	if (!ext4_kset)
-		goto out6;
-	ext4_proc_root = proc_mkdir("fs/ext4", NULL);
-	if (!ext4_proc_root)
 		goto out5;
+	ext4_proc_root = proc_mkdir("fs/ext4", NULL);
 
 	err = ext4_init_feat_adverts();
 	if (err)
@@ -5112,12 +5108,12 @@ out2:
 out3:
 	ext4_exit_feat_adverts();
 out4:
-	remove_proc_entry("fs/ext4", NULL);
-out5:
+	if (ext4_proc_root)
+		remove_proc_entry("fs/ext4", NULL);
 	kset_unregister(ext4_kset);
-out6:
+out5:
 	ext4_exit_system_zone();
-out7:
+out6:
 	ext4_exit_pageio();
 	return err;
 }