[PATCH] proc: Replace proc_inode.type with proc_inode.fd

The sole renaming use of proc_inode.type is to discover the file descriptor
number, so just store the file descriptor number and don't wory about
processing this field.  This removes any /proc limits on the maximum number of
file descriptors, and clears the path to make the hard coded /proc inode
numbers go away.

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>

4 files changed, 7 insertions, 7 deletions

diff --git a/fs/proc/base.c b/fs/proc/base.c
index fa0e6bee40fa..9562df760901 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -297,7 +297,7 @@ static int proc_fd_link(struct inode *inode, struct dentry **dentry, struct vfsm
         struct task_struct *task = proc_task(inode);
         struct files_struct *files;
         struct file *file;
-        int fd = proc_type(inode) - PROC_TID_FD_DIR;
+        int fd = proc_fd(inode);
 
         files = get_files_struct(task);
         if (files) {
@@ -1368,7 +1368,6 @@ static struct inode *proc_pid_make_inode(struct super_block * sb, struct task_st
          */
         get_task_struct(task);
         ei->task = task;
-        ei->type = ino;
         inode->i_uid = 0;
         inode->i_gid = 0;
         if (task_dumpable(task)) {
@@ -1418,7 +1417,7 @@ static int tid_fd_revalidate(struct dentry *dentry, struct nameidata *nd)
 {
         struct inode *inode = dentry->d_inode;
         struct task_struct *task = proc_task(inode);
-        int fd = proc_type(inode) - PROC_TID_FD_DIR;
+        int fd = proc_fd(inode);
         struct files_struct *files;
 
         files = get_files_struct(task);
@@ -1525,6 +1524,7 @@ static struct dentry *proc_lookupfd(struct inode * dir, struct dentry * dentry,
         if (!inode)
                 goto out;
         ei = PROC_I(inode);
+        ei->fd = fd;
         files = get_files_struct(task);
         if (!files)
                 goto out_unlock;
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 722b9c463111..fbc94df138a7 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -95,7 +95,7 @@ static struct inode *proc_alloc_inode(struct super_block *sb)
         if (!ei)
                 return NULL;
         ei->task = NULL;
-        ei->type = 0;
+        ei->fd = 0;
         ei->op.proc_get_link = NULL;
         ei->pde = NULL;
         inode = &ei->vfs_inode;
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 0502f17b860d..6264b7a3a9f0 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -46,7 +46,7 @@ static inline struct task_struct *proc_task(struct inode *inode)
         return PROC_I(inode)->task;
 }
 
-static inline int proc_type(struct inode *inode)
+static inline int proc_fd(struct inode *inode)
 {
-        return PROC_I(inode)->type;
+        return PROC_I(inode)->fd;
 }
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 5810d28fbed9..9dd84884abb1 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -249,7 +249,7 @@ extern void kclist_add(struct kcore_list *, void *, size_t);
 
 struct proc_inode {
         struct task_struct *task;
-        int type;
+        int fd;
         union {
                 int (*proc_get_link)(struct inode *, struct dentry **, struct vfsmount **);
                 int (*proc_read)(struct task_struct *task, char *page);