From: Eric W. Biederman <ebiederm@xmission.com>
Date: Mon, 20 Aug 2007 12:36:30 +0000 (+0900)
Subject: sysfs: Make sysfs_mount static
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7d0c7d676cc066413e1583b5af9fba8011972d41;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

sysfs: Make sysfs_mount static

This patch modifies the users of sysfs_mount to use sysfs_root
instead (which is what they are looking for).  It then
makes sysfs_mount static to keep people from using it
by accident.

The net result is slightly faster and cleaner code.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 739dda176b43..7f4abe176701 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -737,10 +737,8 @@ int sysfs_create_dir(struct kobject * kobj)
 
 	if (kobj->parent)
 		parent_sd = kobj->parent->sd;
-	else if (sysfs_mount && sysfs_mount->mnt_sb)
-		parent_sd = sysfs_mount->mnt_sb->s_root->d_fsdata;
 	else
-		return -EFAULT;
+		parent_sd = &sysfs_root;
 
 	error = create_dir(kobj, parent_sd, kobject_name(kobj), &sd);
 	if (!error)
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index ac7625631fcf..8989cbb51a39 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -14,7 +14,7 @@
 /* Random magic number */
 #define SYSFS_MAGIC 0x62656572
 
-struct vfsmount *sysfs_mount;
+static struct vfsmount *sysfs_mount;
 struct super_block * sysfs_sb = NULL;
 struct kmem_cache *sysfs_dir_cachep;
 
diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c
index a6b13f12b0e7..8ad38bccc0e4 100644
--- a/fs/sysfs/symlink.c
+++ b/fs/sysfs/symlink.c
@@ -60,10 +60,9 @@ int sysfs_create_link(struct kobject * kobj, struct kobject * target, const char
 
 	BUG_ON(!name);
 
-	if (!kobj) {
-		if (sysfs_mount && sysfs_mount->mnt_sb)
-			parent_sd = sysfs_mount->mnt_sb->s_root->d_fsdata;
-	} else
+	if (!kobj)
+		parent_sd = &sysfs_root;
+	else
 		parent_sd = kobj->sd;
 
 	error = -EFAULT;
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 8a0aea1ab86d..77253aabc4af 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -51,7 +51,6 @@ struct sysfs_addrm_cxt {
 	int			cnt;
 };
 
-extern struct vfsmount * sysfs_mount;
 extern struct sysfs_dirent sysfs_root;
 extern struct kmem_cache *sysfs_dir_cachep;