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Subject[PATCH 2/4] procfs: kill the global proc_mnt variable
After the previous cleanup in proc_get_sb() the global proc_mnt has
no reasons to exists, kill it.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
---
fs/proc/internal.h | 1 -
fs/proc/inode.c | 2 --
fs/proc/root.c | 5 +++--
3 files changed, 3 insertions(+), 5 deletions(-)
--- 35-rc3/fs/proc/internal.h~PNS_2_KILL_ROOT_MNT 2010-06-19 19:20:23.000000000 +0200
+++ 35-rc3/fs/proc/internal.h 2010-06-19 19:21:39.000000000 +0200
@@ -106,7 +106,6 @@ static inline struct proc_dir_entry *pde
}
void pde_put(struct proc_dir_entry *pde);

-extern struct vfsmount *proc_mnt;
int proc_fill_super(struct super_block *);
struct inode *proc_get_inode(struct super_block *, unsigned int, struct proc_dir_entry *);

--- 35-rc3/fs/proc/inode.c~PNS_2_KILL_ROOT_MNT 2010-06-19 19:20:23.000000000 +0200
+++ 35-rc3/fs/proc/inode.c 2010-06-19 19:21:39.000000000 +0200
@@ -43,8 +43,6 @@ static void proc_delete_inode(struct ino
clear_inode(inode);
}

-struct vfsmount *proc_mnt;
-
static struct kmem_cache * proc_inode_cachep;

static struct inode *proc_alloc_inode(struct super_block *sb)
--- 35-rc3/fs/proc/root.c~PNS_2_KILL_ROOT_MNT 2010-06-19 19:21:38.000000000 +0200
+++ 35-rc3/fs/proc/root.c 2010-06-19 19:21:39.000000000 +0200
@@ -94,14 +94,15 @@ static struct file_system_type proc_fs_t

void __init proc_root_init(void)
{
+ struct vfsmount *mnt;
int err;

proc_init_inodecache();
err = register_filesystem(&proc_fs_type);
if (err)
return;
- proc_mnt = kern_mount_data(&proc_fs_type, &init_pid_ns);
- if (IS_ERR(proc_mnt)) {
+ mnt = kern_mount_data(&proc_fs_type, &init_pid_ns);
+ if (IS_ERR(mnt)) {
unregister_filesystem(&proc_fs_type);
return;
}


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