vfs: move mnt_devname

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2 files changed, 11 insertions, 10 deletions

diff --git a/fs/mount.h b/fs/mount.h
index 7060d2a6f802..c5fc3f7a9580 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -19,7 +19,8 @@ struct mount {
 #endif
         struct list_head mnt_mounts;    /* list of children, anchored here */
         struct list_head mnt_child;     /* and going through their mnt_child */
-        /* yet to be moved - up to mnt_devname */
+        /* yet to be moved - fsnotify ones go here */
+        const char *mnt_devname;        /* Name of device e.g. /dev/dsk/hda1 */
         struct list_head mnt_list;
         struct list_head mnt_expire;    /* link in fs-specific expiry list */
         struct list_head mnt_share;     /* circular list of shared mounts */
diff --git a/fs/namespace.c b/fs/namespace.c
index e15125356ac1..b8a30928d0c1 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -183,8 +183,8 @@ static struct mount *alloc_vfsmnt(const char *name)
                         goto out_free_cache;
 
                 if (name) {
-                        mnt->mnt_devname = kstrdup(name, GFP_KERNEL);
-                        if (!mnt->mnt_devname)
+                        p->mnt_devname = kstrdup(name, GFP_KERNEL);
+                        if (!p->mnt_devname)
                                 goto out_free_id;
                 }
 
@@ -215,7 +215,7 @@ static struct mount *alloc_vfsmnt(const char *name)
 
 #ifdef CONFIG_SMP
 out_free_devname:
-        kfree(p->mnt.mnt_devname);
+        kfree(p->mnt_devname);
 #endif
 out_free_id:
         mnt_free_id(p);
@@ -451,7 +451,7 @@ static void __mnt_unmake_readonly(struct mount *mnt)
 
 static void free_vfsmnt(struct mount *mnt)
 {
-        kfree(mnt->mnt.mnt_devname);
+        kfree(mnt->mnt_devname);
         mnt_free_id(mnt);
 #ifdef CONFIG_SMP
         free_percpu(mnt->mnt_pcp);
@@ -692,7 +692,7 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root,
                                         int flag)
 {
         struct super_block *sb = old->mnt.mnt_sb;
-        struct mount *mnt = alloc_vfsmnt(old->mnt.mnt_devname);
+        struct mount *mnt = alloc_vfsmnt(old->mnt_devname);
 
         if (mnt) {
                 if (flag & (CL_SLAVE | CL_PRIVATE))
@@ -997,7 +997,7 @@ static int show_vfsmnt(struct seq_file *m, void *v)
                 if (err)
                         goto out;
         } else {
-                mangle(m, mnt->mnt_devname ? mnt->mnt_devname : "none");
+                mangle(m, r->mnt_devname ? r->mnt_devname : "none");
         }
         seq_putc(m, ' ');
         seq_path(m, &mnt_path, " \t\n\\");
@@ -1070,7 +1070,7 @@ static int show_mountinfo(struct seq_file *m, void *v)
         if (sb->s_op->show_devname)
                 err = sb->s_op->show_devname(m, mnt);
         else
-                mangle(m, mnt->mnt_devname ? mnt->mnt_devname : "none");
+                mangle(m, r->mnt_devname ? r->mnt_devname : "none");
         if (err)
                 goto out;
         seq_puts(m, sb->s_flags & MS_RDONLY ? " ro" : " rw");
@@ -1103,9 +1103,9 @@ static int show_vfsstat(struct seq_file *m, void *v)
                 seq_puts(m, "device ");
                 err = mnt->mnt_sb->s_op->show_devname(m, mnt);
         } else {
-                if (mnt->mnt_devname) {
+                if (r->mnt_devname) {
                         seq_puts(m, "device ");
-                        mangle(m, mnt->mnt_devname);
+                        mangle(m, r->mnt_devname);
                 } else
                         seq_puts(m, "no device");
         }