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[PATCH] proc: Use struct pid not struct task_ref

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Incrementally update my proc-dont-lock-task_structs-indefinitely patches so
that they work with struct pid instead of struct task_ref.

Mostly this is a straight 1-1 substitution.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Eric W. Biederman 2006-06-26 00:25:56 -07:00 committed by Linus Torvalds
parent 99f8955183
commit 13b41b0949
6 changed files with 18 additions and 20 deletions
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8
fs/proc/base.c
View file

@ -951,7 +951,7 @@ static ssize_t proc_loginuid_write(struct file * file, const char __user * buf,
if (!capable(CAP_AUDIT_CONTROL))
return -EPERM;
if (current != proc_tref(inode)->task)
if (current != pid_task(proc_pid(inode), PIDTYPE_PID))
return -EPERM;
if (count >= PAGE_SIZE)
@ -1363,8 +1363,8 @@ static struct inode *proc_pid_make_inode(struct super_block * sb, struct task_st
/*
* grab the reference to task.
*/
ei->tref = tref_get_by_task(task);
if (!tref_task(ei->tref))
ei->pid = get_pid(task->pids[PIDTYPE_PID].pid);
if (!ei->pid)
goto out_unlock;
inode->i_uid = 0;
@ -1482,7 +1482,7 @@ static int pid_delete_dentry(struct dentry * dentry)
* If so, then don't put the dentry on the lru list,
* kill it immediately.
*/
return !proc_tref(dentry->d_inode)->task;
return !proc_pid(dentry->d_inode)->tasks[PIDTYPE_PID].first;
}
static struct dentry_operations tid_fd_dentry_operations =

4
fs/proc/inode.c
View file

@ -62,7 +62,7 @@ static void proc_delete_inode(struct inode *inode)
truncate_inode_pages(&inode->i_data, 0);
/* Stop tracking associated processes */
tref_put(PROC_I(inode)->tref);
put_pid(PROC_I(inode)->pid);
/* Let go of any associated proc directory entry */
de = PROC_I(inode)->pde;
@ -91,7 +91,7 @@ static struct inode *proc_alloc_inode(struct super_block *sb)
ei = (struct proc_inode *)kmem_cache_alloc(proc_inode_cachep, SLAB_KERNEL);
if (!ei)
return NULL;
ei->tref = NULL;
ei->pid = NULL;
ei->fd = 0;
ei->op.proc_get_link = NULL;
ei->pde = NULL;

7
fs/proc/internal.h
View file

@ -10,7 +10,6 @@
*/
#include <linux/proc_fs.h>
#include <linux/task_ref.h>
struct vmalloc_info {
unsigned long used;
@ -51,14 +50,14 @@ void free_proc_entry(struct proc_dir_entry *de);
int proc_init_inodecache(void);
static inline struct task_ref *proc_tref(struct inode *inode)
static inline struct pid *proc_pid(struct inode *inode)
{
return PROC_I(inode)->tref;
return PROC_I(inode)->pid;
}
static inline struct task_struct *get_proc_task(struct inode *inode)
{
return get_tref_task(proc_tref(inode));
return get_pid_task(proc_pid(inode), PIDTYPE_PID);
}
static inline int proc_fd(struct inode *inode)

4
fs/proc/task_mmu.c
View file

@ -320,7 +320,7 @@ static void *m_start(struct seq_file *m, loff_t *pos)
if (last_addr == -1UL)
return NULL;
priv->task = get_tref_task(priv->tref);
priv->task = get_pid_task(priv->pid, PIDTYPE_PID);
if (!priv->task)
return NULL;
@ -416,7 +416,7 @@ static int do_maps_open(struct inode *inode, struct file *file,
int ret = -ENOMEM;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (priv) {
priv->tref = proc_tref(inode);
priv->pid = proc_pid(inode);
ret = seq_open(file, ops);
if (!ret) {
struct seq_file *m = file->private_data;

4
include/linux/proc_fs.h
View file

@ -246,7 +246,7 @@ extern void kclist_add(struct kcore_list *, void *, size_t);
#endif
struct proc_inode {
struct task_ref *tref;
struct pid *pid;
int fd;
union {
int (*proc_get_link)(struct inode *, struct dentry **, struct vfsmount **);
@ -267,7 +267,7 @@ static inline struct proc_dir_entry *PDE(const struct inode *inode)
}
struct proc_maps_private {
struct task_ref *tref;
struct pid *pid;
struct task_struct *task;
struct vm_area_struct *tail_vma;
};

11
kernel/cpuset.c
View file

@ -50,7 +50,6 @@
#include <linux/time.h>
#include <linux/backing-dev.h>
#include <linux/sort.h>
#include <linux/task_ref.h>
#include <asm/uaccess.h>
#include <asm/atomic.h>
@ -2443,7 +2442,7 @@ void __cpuset_memory_pressure_bump(void)
*/
static int proc_cpuset_show(struct seq_file *m, void *v)
{
struct task_ref *tref;
struct pid *pid;
struct task_struct *tsk;
char *buf;
int retval;
@ -2454,8 +2453,8 @@ static int proc_cpuset_show(struct seq_file *m, void *v)
goto out;
retval = -ESRCH;
tref = m->private;
tsk = get_tref_task(tref);
pid = m->private;
tsk = get_pid_task(pid, PIDTYPE_PID);
if (!tsk)
goto out_free;
@ -2478,8 +2477,8 @@ out:
static int cpuset_open(struct inode *inode, struct file *file)
{
struct task_ref *tref = PROC_I(inode)->tref;
return single_open(file, proc_cpuset_show, tref);
struct pid *pid = PROC_I(inode)->pid;
return single_open(file, proc_cpuset_show, pid);
}
struct file_operations proc_cpuset_operations = {