Home » Mailing lists » Devel » [RFC][PATCH 1/4] seed /proc root inode in proc_fill_super()
| [RFC][PATCH 1/4] seed /proc root inode in proc_fill_super() [message #17393] |
Fri, 26 January 2007 22:42  |
Dave Hansen
Messages: 240
Registered: October 2005
|
Senior Member |
|
|
Here's a set of patches which I believe allows multiple
instances of /proc to exist. We want these because it
allows each pid_namespace to have a completely diffferent
view of /proc.
---
/proc currently has some special code to make sure
that the root directory gets set up correctly. It
uses the global proc_mnt variable in order to find
its way to the root inode.
In order to try to get multiple /proc mounts, I'm
attempting to kill this variable. But, I noticed
that we have all of the data to fill in the inode's
pid in proc_fill_super(), where it takes a wee bit
more work in proc_get_sb().
Any reason not to just do it in proc_fill_super()?
---
lxc-dave/fs/proc/inode.c | 9 +++++++++
lxc-dave/fs/proc/root.c | 11 -----------
2 files changed, 9 insertions(+), 11 deletions(-)
diff -puN fs/proc/inode.c~A0-seed-proc-differently fs/proc/inode.c
--- lxc/fs/proc/inode.c~A0-seed-proc-differently 2007-01-26 14:29:16.000000000 -0800
+++ lxc-dave/fs/proc/inode.c 2007-01-26 14:29:16.000000000 -0800
@@ -183,6 +183,7 @@ out_mod:
int proc_fill_super(struct super_block *s, void *data, int silent)
{
+ struct proc_inode *ei;
struct inode * root_inode;
s->s_flags |= MS_NODIRATIME | MS_NOSUID | MS_NOEXEC;
@@ -200,6 +201,14 @@ int proc_fill_super(struct super_block *
s->s_root = d_alloc_root(root_inode);
if (!s->s_root)
goto out_no_root;
+ /* Seed the root directory with a pid so it doesn't need
+ * to be special in base.c. I would do this earlier but
+ * the only task alive when /proc is mounted the first time
+ * is the init_task and it doesn't have any pids.
+ */
+ ei = PROC_I(root_inode);
+ if (!ei->pid)
+ ei->pid = find_get_pid(1);
return 0;
out_no_root:
diff -puN fs/proc/root.c~A0-seed-proc-differently fs/proc/root.c
--- lxc/fs/proc/root.c~A0-seed-proc-differently 2007-01-26 14:29:16.000000000 -0800
+++ lxc-dave/fs/proc/root.c 2007-01-26 14:29:16.000000000 -0800
@@ -30,17 +30,6 @@ struct proc_dir_entry *proc_sys_root;
static int proc_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
- if (proc_mnt) {
- /* Seed the root directory with a pid so it doesn't need
- * to be special in base.c. I would do this earlier but
- * the only task alive when /proc is mounted the first time
- * is the init_task and it doesn't have any pids.
- */
- struct proc_inode *ei;
- ei = PROC_I(proc_mnt->mnt_sb->s_root->d_inode);
- if (!ei->pid)
- ei->pid = find_get_pid(1);
- }
return get_sb_single(fs_type, flags, data, proc_fill_super, mnt);
}
_
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| [RFC][PATCH 2/4] remove proc_mnt's use or killing inodes [message #17394 is a reply to message #17393] |
Fri, 26 January 2007 22:42  |
Dave Hansen
Messages: 240
Registered: October 2005
|
Senior Member |
|
|
We use proc_mnt as a shortcut to find a superblock on which
to go killing /proc inodes. This will break if we ever have
more than one /proc superblock. So, use the superblock list
to go find each of the /proc sb's and kill inodes on each
superblock.
This eliminates one more use of proc_mnt.
---
lxc-dave/fs/proc/generic.c | 28 +++++++++++++++++++++++-----
1 file changed, 23 insertions(+), 5 deletions(-)
diff -puN fs/proc/generic.c~A1-remove-proc_mnt-0 fs/proc/generic.c
--- lxc/fs/proc/generic.c~A1-remove-proc_mnt-0 2007-01-26 14:29:17.000000000 -0800
+++ lxc-dave/fs/proc/generic.c 2007-01-26 14:29:17.000000000 -0800
@@ -547,13 +547,10 @@ static int proc_register(struct proc_dir
return 0;
}
-/*
- * Kill an inode that got unregistered..
- */
-static void proc_kill_inodes(struct proc_dir_entry *de)
+static void proc_kill_inodes_sb(struct proc_dir_entry *de,
+ struct super_block *sb)
{
struct list_head *p;
- struct super_block *sb = proc_mnt->mnt_sb;
/*
* Actually it's a partial revoke().
@@ -577,6 +574,27 @@ static void proc_kill_inodes(struct proc
file_list_unlock();
}
+/*
+ * Kill an inode that got unregistered..
+ */
+static void proc_kill_inodes(struct proc_dir_entry *de)
+{
+ struct list_head *l;
+ struct file_system_type *procfs;
+
+ procfs = get_fs_type("proc");
+ if (!procfs)
+ return;
+
+ spin_lock(&sb_lock);
+ list_for_each(l, &procfs->fs_supers) {
+ struct super_block *sb;
+ sb = list_entry(l, struct super_block, s_instances);
+ proc_kill_inodes_sb(de, sb);
+ }
+ spin_unlock(&sb_lock);
+}
+
static struct proc_dir_entry *proc_create(struct proc_dir_entry **parent,
const char *name,
mode_t mode,
_
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| [RFC][PATCH 3/4] create fill_if_new_sb() helper [message #17395 is a reply to message #17393] |
Fri, 26 January 2007 22:42 |
Dave Hansen
Messages: 240
Registered: October 2005
|
Senior Member |
|
|
As I was migrating /proc away from get_sb_single() use, I
noticed I was duplicating a lot of functionality in the /proc
code from get_sb_single(). I then noticed that get_sb_nodev()
does basically the same thing.
So, I created a fill_if_new_sb() helper to work on the superblock
after sget() to fill it only when necessary and handle the work
with sb->s_flags and the s->s_umount semaphore.
I'll use this in a moment in /proc as well.
---
lxc-dave/fs/super.c | 43 +++++++++++++++++++++++--------------------
lxc-dave/include/linux/fs.h | 2 ++
2 files changed, 25 insertions(+), 20 deletions(-)
diff -puN fs/super.c~A2-fill_if_new_sb fs/super.c
--- lxc/fs/super.c~A2-fill_if_new_sb 2007-01-26 14:29:17.000000000 -0800
+++ lxc-dave/fs/super.c 2007-01-26 14:29:17.000000000 -0800
@@ -810,6 +810,23 @@ void kill_block_super(struct super_block
EXPORT_SYMBOL(kill_block_super);
#endif
+int fill_if_new_sb(struct super_block *s, void *data, int flags,
+ int (*fill_super)(struct super_block *, void *, int))
+{
+ int error;
+ if (s->s_root)
+ return 0;
+ s->s_flags = flags;
+ error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
+ if (error) {
+ up_write(&s->s_umount);
+ deactivate_super(s);
+ return error;
+ }
+ s->s_flags |= MS_ACTIVE;
+ return error;
+}
+
int get_sb_nodev(struct file_system_type *fs_type,
int flags, void *data,
int (*fill_super)(struct super_block *, void *, int),
@@ -820,16 +837,9 @@ int get_sb_nodev(struct file_system_type
if (IS_ERR(s))
return PTR_ERR(s);
-
- s->s_flags = flags;
-
- error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
- if (error) {
- up_write(&s->s_umount);
- deactivate_super(s);
+ error = fill_if_new_sb(s, data, flags, fill_super);
+ if (error)
return error;
- }
- s->s_flags |= MS_ACTIVE;
return simple_set_mnt(mnt, s);
}
@@ -845,22 +855,15 @@ int get_sb_single(struct file_system_typ
int (*fill_super)(struct super_block *, void *, int),
struct vfsmount *mnt)
{
- struct super_block *s;
int error;
+ struct super_block *s;
s = sget(fs_type, compare_single, set_anon_super, NULL);
if (IS_ERR(s))
return PTR_ERR(s);
- if (!s->s_root) {
- s->s_flags = flags;
- error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
- if (error) {
- up_write(&s->s_umount);
- deactivate_super(s);
- return error;
- }
- s->s_flags |= MS_ACTIVE;
- }
+ error = fill_if_new_sb(s, data, flags, fill_super);
+ if (error)
+ return error;
do_remount_sb(s, flags, data, 0);
return simple_set_mnt(mnt, s);
}
diff -puN include/linux/fs.h~A2-fill_if_new_sb include/linux/fs.h
--- lxc/include/linux/fs.h~A2-fill_if_new_sb 2007-01-26 14:29:17.000000000 -0800
+++ lxc-dave/include/linux/fs.h 2007-01-26 14:29:17.000000000 -0800
@@ -1416,6 +1416,8 @@ extern int get_sb_nodev(struct file_syst
int flags, void *data,
int (*fill_super)(struct super_block *, void *, int),
struct vfsmount *mnt);
+extern int fill_if_new_sb(struct super_block *s, void *data, int flags,
+ int (*fill_super)(struct super_block *, void *, int));
void generic_shutdown_super(struct super_block *sb);
void kill_block_super(struct super_block *sb);
void kill_anon_super(struct super_block *sb);
_
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| [RFC][PATCH 4/4] introduce proc_mnt for pid_ns [message #17396 is a reply to message #17393] |
Fri, 26 January 2007 22:42 |
Dave Hansen
Messages: 240
Registered: October 2005
|
Senior Member |
|
|
The following patch completes the removal of proc_mnt. It fetches
the mnt on which to do dentry invalidations from the pid_namespace
in which the task appears.
For now, there is only one pid namespace in mainline so this is
straightforward. In the -lxc tree we'll have to do something
more complex.
Note that the new proc_compare_super() enforces the "one proc sb
per pid_namespace" limit.
---
lxc-dave/fs/proc/base.c | 26 ++++++++++++++++++++++--
lxc-dave/fs/proc/inode.c | 2 -
lxc-dave/fs/proc/root.c | 35 ++++++++++++++++++++++++++-------
lxc-dave/include/linux/pid_namespace.h | 1
lxc-dave/include/linux/proc_fs.h | 1
5 files changed, 53 insertions(+), 12 deletions(-)
diff -puN fs/proc/base.c~A3-remove-proc_mnt-1 fs/proc/base.c
--- lxc/fs/proc/base.c~A3-remove-proc_mnt-1 2007-01-26 14:29:18.000000000 -0800
+++ lxc-dave/fs/proc/base.c 2007-01-26 14:29:18.000000000 -0800
@@ -70,6 +70,7 @@
#include <linux/seccomp.h>
#include <linux/cpuset.h>
#include <linux/audit.h>
+#include <linux/pid_namespace.h>
#include <linux/poll.h>
#include <linux/nsproxy.h>
#include <linux/oom.h>
@@ -1905,9 +1906,11 @@ static struct inode_operations proc_tgid
};
/**
- * proc_flush_task - Remove dcache entries for @task from the /proc dcache.
+ * proc_flush_task_from_pid_ns - Remove dcache entries for @task
+ * from the /proc dcache.
*
* @task: task that should be flushed.
+ * @pid_ns: pid_namespace in which that task appears
*
* Looks in the dcache for
* /proc/@pid
@@ -1925,11 +1928,20 @@ static struct inode_operations proc_tgid
* that no dcache entries will exist at process exit time it
* just makes it very unlikely that any will persist.
*/
-void proc_flush_task(struct task_struct *task)
+void proc_flush_task_from_pid_ns(struct task_struct *task,
+ struct pid_namespace* pid_ns)
{
struct dentry *dentry, *leader, *dir;
char buf[PROC_NUMBUF];
struct qstr name;
+ struct vfsmount *proc_mnt = pid_ns->proc_mnt;
+
+ /*
+ * It is possible that no /procs have been instantiated
+ * for this particular pid namespace.
+ */
+ if (!proc_mnt)
+ return;
name.name = buf;
name.len = snprintf(buf, sizeof(buf), "%d", task->pid);
@@ -1971,6 +1983,16 @@ out:
return;
}
+void proc_flush_task(struct task_struct *task)
+{
+ /*
+ * Right now, tasks only appear in their own pid_ns.
+ * With containers this function will change to a loop
+ * over all pid_ns's in which the task appears.
+ */
+ proc_flush_task_from_pid_ns(task, current->nsproxy->pid_ns);
+}
+
static struct dentry *proc_pid_instantiate(struct inode *dir,
struct dentry * dentry,
struct task_struct *task, void *ptr)
diff -puN fs/proc/inode.c~A3-remove-proc_mnt-1 fs/proc/inode.c
--- lxc/fs/proc/inode.c~A3-remove-proc_mnt-1 2007-01-26 14:29:18.000000000 -0800
+++ lxc-dave/fs/proc/inode.c 2007-01-26 14:29:18.000000000 -0800
@@ -67,8 +67,6 @@ static void proc_delete_inode(struct ino
clear_inode(inode);
}
-struct vfsmount *proc_mnt;
-
static void proc_read_inode(struct inode * inode)
{
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
diff -puN fs/proc/root.c~A3-remove-proc_mnt-1 fs/proc/root.c
--- lxc/fs/proc/root.c~A3-remove-proc_mnt-1 2007-01-26 14:29:18.000000000 -0800
+++ lxc-dave/fs/proc/root.c 2007-01-26 14:29:18.000000000 -0800
@@ -18,6 +18,7 @@
#include <linux/bitops.h>
#include <linux/smp_lock.h>
#include <linux/mount.h>
+#include <linux/pid_namespace.h>
#include "internal.h"
@@ -27,10 +28,36 @@ struct proc_dir_entry *proc_net, *proc_n
struct proc_dir_entry *proc_sys_root;
#endif
+static int proc_compare_super(struct super_block *s, void *p)
+{
+ struct pid_namespace *pid_ns = p;
+ if (pid_ns->proc_mnt->mnt_sb == s)
+ return 1;
+ return 0;
+}
+
static int proc_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
- return get_sb_single(fs_type, flags, data, proc_fill_super, mnt);
+ struct super_block *s;
+
+ struct pid_namespace *pid_ns = current->nsproxy->pid_ns;
+ int error;
+
+ s = sget(fs_type, proc_compare_super, set_anon_super, pid_ns);
+ if (IS_ERR(s))
+ return PTR_ERR(s);
+ if (!pid_ns->proc_mnt)
+ pid_ns->proc_mnt = mnt;
+
+ error = fill_if_new_sb(s, pid_ns, flags, proc_fill_super);
+ if (error)
+ return error;
+
+ do_remount_sb(s, flags, data, 0);
+ error = simple_set_mnt(mnt, s);
+
+ return error;
}
static struct file_system_type proc_fs_type = {
@@ -47,12 +74,6 @@ void __init proc_root_init(void)
err = register_filesystem(&proc_fs_type);
if (err)
return;
- proc_mnt = kern_mount(&proc_fs_type);
- err = PTR_ERR(proc_mnt);
- if (IS_ERR(proc_mnt)) {
- unregister_filesystem(&proc_fs_type);
- return;
- }
proc_misc_init();
proc_net = proc_mkdir("net", NULL);
proc_net_stat = proc_mkdir("net/stat", NULL);
diff -puN include/linux/pid_namespace.h~A3-remove-proc_mnt-1 include/linux/pid_namespace.h
--- lxc/include/linux/pid_namespace.h~A3-remove-proc_mnt-1 2007-01-26 14:29:18.000000000 -0800
+++ lxc-dave/include/linux/pid_namespace.h 2007-01-26 14:29:18.000000000 -0800
@@ -20,6 +20,7 @@ struct pid_namespace {
struct pidmap pidmap[PIDMAP_ENTRIES];
int last_pid;
struct task_struct *child_reaper;
+ struct vfsmount *proc_mnt;
};
extern struct pid_namespace init_pid_ns;
diff -puN include/linux/proc_fs.h~A3-remove-proc_mnt-1 include/linux/proc_fs.h
--- lxc/include/linux/proc_fs.h~A3-remove-proc_mnt-1 2007-01-26 14:29:18.000000000 -0800
+++ lxc-dave/include/linux/proc_fs.h 2007-01-26 14:29:18.000000000 -0800
@@ -109,7 +109,6 @@ extern struct proc_dir_entry *create_pro
struct proc_dir_entry *parent);
extern void remove_proc_entry(const char *name, struct proc_dir_entry *parent);
-extern struct vfsmount *proc_mnt;
extern int proc_fill_super(struct super_block *,void *,int);
extern struct inode *proc_get_inode(struct super_block *, unsigned int, struct proc_dir_entry *);
_
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| Re: [RFC][PATCH 4/4] introduce proc_mnt for pid_ns [message #17430 is a reply to message #17396] |
Fri, 02 February 2007 04:17 |
Sukadev Bhattiprolu
Messages: 413
Registered: August 2006
|
Senior Member |
|
|
Dave Hansen [hansendc@us.ibm.com] wrote:
|
| The following patch completes the removal of proc_mnt. It fetches
| the mnt on which to do dentry invalidations from the pid_namespace
| in which the task appears.
|
| For now, there is only one pid namespace in mainline so this is
| straightforward. In the -lxc tree we'll have to do something
| more complex.
|
| Note that the new proc_compare_super() enforces the "one proc sb
| per pid_namespace" limit.
|
| ---
|
| lxc-dave/fs/proc/base.c | 26 ++++++++++++++++++++++--
| lxc-dave/fs/proc/inode.c | 2 -
| lxc-dave/fs/proc/root.c | 35 ++++++++++++++++++++++++++-------
| lxc-dave/include/linux/pid_namespace.h | 1
| lxc-dave/include/linux/proc_fs.h | 1
| 5 files changed, 53 insertions(+), 12 deletions(-)
|
| diff -puN fs/proc/base.c~A3-remove-proc_mnt-1 fs/proc/base.c
| --- lxc/fs/proc/base.c~A3-remove-proc_mnt-1 2007-01-26 14:29:18.000000000 -0800
| +++ lxc-dave/fs/proc/base.c 2007-01-26 14:29:18.000000000 -0800
| @@ -70,6 +70,7 @@
| #include <linux/seccomp.h>
| #include <linux/cpuset.h>
| #include <linux/audit.h>
| +#include <linux/pid_namespace.h>
| #include <linux/poll.h>
| #include <linux/nsproxy.h>
| #include <linux/oom.h>
| @@ -1905,9 +1906,11 @@ static struct inode_operations proc_tgid
| };
|
| /**
| - * proc_flush_task - Remove dcache entries for @task from the /proc dcache.
| + * proc_flush_task_from_pid_ns - Remove dcache entries for @task
| + * from the /proc dcache.
| *
| * @task: task that should be flushed.
| + * @pid_ns: pid_namespace in which that task appears
| *
| * Looks in the dcache for
| * /proc/@pid
| @@ -1925,11 +1928,20 @@ static struct inode_operations proc_tgid
| * that no dcache entries will exist at process exit time it
| * just makes it very unlikely that any will persist.
| */
| -void proc_flush_task(struct task_struct *task)
| +void proc_flush_task_from_pid_ns(struct task_struct *task,
| + struct pid_namespace* pid_ns)
| {
| struct dentry *dentry, *leader, *dir;
| char buf[PROC_NUMBUF];
| struct qstr name;
| + struct vfsmount *proc_mnt = pid_ns->proc_mnt;
| +
| + /*
| + * It is possible that no /procs have been instantiated
| + * for this particular pid namespace.
| + */
| + if (!proc_mnt)
| + return;
|
| name.name = buf;
| name.len = snprintf(buf, sizeof(buf), "%d", task->pid);
| @@ -1971,6 +1983,16 @@ out:
| return;
| }
|
| +void proc_flush_task(struct task_struct *task)
| +{
| + /*
| + * Right now, tasks only appear in their own pid_ns.
| + * With containers this function will change to a loop
| + * over all pid_ns's in which the task appears.
| + */
| + proc_flush_task_from_pid_ns(task, current->nsproxy->pid_ns);
| +}
| +
| static struct dentry *proc_pid_instantiate(struct inode *dir,
| struct dentry * dentry,
| struct task_struct *task, void *ptr)
| diff -puN fs/proc/inode.c~A3-remove-proc_mnt-1 fs/proc/inode.c
| --- lxc/fs/proc/inode.c~A3-remove-proc_mnt-1 2007-01-26 14:29:18.000000000 -0800
| +++ lxc-dave/fs/proc/inode.c 2007-01-26 14:29:18.000000000 -0800
| @@ -67,8 +67,6 @@ static void proc_delete_inode(struct ino
| clear_inode(inode);
| }
|
| -struct vfsmount *proc_mnt;
| -
| static void proc_read_inode(struct inode * inode)
| {
| inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
| diff -puN fs/proc/root.c~A3-remove-proc_mnt-1 fs/proc/root.c
| --- lxc/fs/proc/root.c~A3-remove-proc_mnt-1 2007-01-26 14:29:18.000000000 -0800
| +++ lxc-dave/fs/proc/root.c 2007-01-26 14:29:18.000000000 -0800
| @@ -18,6 +18,7 @@
| #include <linux/bitops.h>
| #include <linux/smp_lock.h>
| #include <linux/mount.h>
| +#include <linux/pid_namespace.h>
|
| #include "internal.h"
|
| @@ -27,10 +28,36 @@ struct proc_dir_entry *proc_net, *proc_n
| struct proc_dir_entry *proc_sys_root;
| #endif
|
| +static int proc_compare_super(struct super_block *s, void *p)
| +{
| + struct pid_namespace *pid_ns = p;
| + if (pid_ns->proc_mnt->mnt_sb == s)
| + return 1;
| + return 0;
| +}
| +
| static int proc_get_sb(struct file_system_type *fs_type,
| int flags, const char *dev_name, void *data, struct vfsmount *mnt)
| {
| - return get_sb_single(fs_type, flags, data, proc_fill_super, mnt);
| + struct super_block *s;
| +
| + struct pid_namespace *pid_ns = current->nsproxy->pid_ns;
| + int error;
| +
| + s = sget(fs_type, proc_compare_super, set_anon_super, pid_ns);
| + if (IS_ERR(s))
| + return PTR_ERR(s);
| + if (!pid_ns->proc_mnt)
| + pid_ns->proc_mnt = mnt;
| +
| + error = fill_if_new_sb(s, pid_ns, flags, proc_fill_super);
| + if (error)
| + return error;
| +
| + do_remount_sb(s, flags, data, 0);
| + error = simple_set_mnt(mnt, s);
| +
| + return error;
| }
|
| static struct file_system_type proc_fs_type = {
| @@ -47,12 +74,6 @@ void __init proc_root_init(void)
| err = register_filesystem(&proc_fs_type);
| if (err)
| return;
| - proc_mnt = kern_mount(&proc_fs_type);
| - err = PTR_ERR(proc_mnt);
| - if (IS_ERR(proc_mnt)) {
| - unregister_filesystem(&proc_fs_type);
| - return;
| - }
If we remove the kern_mount() call here, where do we mount
/proc for the init_pid_ns now ? i.e how does proc_get_sb()
get called the first time ?
| proc_misc_init();
| proc_net = proc_mkdir("net", NULL);
| proc_net_stat = proc_mkdir("net/stat", NULL);
| diff -puN include/linux/pid_namespace.h~A3-remove-proc_mnt-1 include/linux/pid_namespace.h
| --- lxc/include/linux/pid_namespace.h~A3-remove-proc_mnt-1 2007-01-26 14:29:18.000000000 -0800
| +++ lxc-dave/include/linux/pid_namespace.h 2007-01-26 14:29:18.000000000 -0800
| @@ -20,6 +20,7 @@ struct pid_namespace {
| struct pidmap pidmap[PIDMAP_ENTRIES];
| int last_pid;
| struct task_struct *child_reaper;
| + struct vfsmount *proc_mnt;
| };
|
| extern struct pid_namespace init_pid_ns;
| diff -puN include/linux/proc_fs.h~A3-remove-proc_mnt-1 include/linux/proc_fs.h
| --- lxc/include/linux/proc_fs.h~A3-remove-proc_mnt-1 2007-01-26 14:29:18.000000000 -0800
| +++ lxc-dave/include/linux/proc_fs.h 2007-01-26 14:29:18.000000000 -0800
| @@ -109,7 +109,6 @@ extern struct proc_dir_entry *create_pro
| struct proc_dir_entry *parent);
| extern void remove_proc_entry(const char *name, struct proc_dir_entry *parent);
|
| -extern struct vfsmount *proc_mnt;
| extern int proc_fill_super(struct super_block *,void *,int);
| extern struct inode *proc_get_inode(struct super_block *, unsigned int, struct proc_dir_entry *);
|
| _
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| Containers@lists.osdl.org
| https://lists.osdl.org/mailman/listinfo/containers
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