The set of functions process_session, task_session, process_group
and task_pgrp is confusing, as the names can be mixed with each other
when looking at the code for a long time.

The proposals are to
* equip the functions that return the integer with _nr suffix to
  represent that fact,
* and to make all functions work with task (not process) by making
  the common prefix of the same name.

For monotony the routines signal_session() and set_signal_session()
are replaced with task_session_nr() and set_task_session(), especially
since they are only used with the explicit task->signal dereference.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>

---

 arch/mips/kernel/irixelf.c  |    4 ++--
 arch/mips/kernel/irixsig.c  |    2 +-
 arch/mips/kernel/sysirix.c  |    4 ++--
 arch/sparc64/solaris/misc.c |    4 ++--
 drivers/char/tty_io.c       |    4 ++--
 fs/autofs/inode.c           |    2 +-
 fs/autofs/root.c            |    4 ++--
 fs/autofs4/autofs_i.h       |    2 +-
 fs/autofs4/inode.c          |    4 ++--
 fs/autofs4/root.c           |    4 ++--
 fs/binfmt_elf.c             |    8 ++++----
 fs/binfmt_elf_fdpic.c       |    8 ++++----
 fs/coda/upcall.c            |    2 +-
 fs/proc/array.c             |    4 ++--
 include/linux/sched.h       |   15 +++++----------
 kernel/exit.c               |   10 +++++-----
 kernel/fork.c               |    4 ++--
 kernel/signal.c             |    2 +-
 kernel/sys.c                |   14 +++++++-------
 19 files changed, 48 insertions(+), 53 deletions(-)

--- ./arch/mips/kernel/irixelf.c.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./arch/mips/kernel/irixelf.c	2007-06-14 15:52:54.000000000 +0400
@@ -1170,8 +1170,8 @@ static int irix_core_dump(long signr, st
 	prstatus.pr_sighold = current->blocked.sig[0];
 	psinfo.pr_pid = prstatus.pr_pid = current->pid;
 	psinfo.pr_ppid = prstatus.pr_ppid = current->parent->pid;
-	psinfo.pr_pgrp = prstatus.pr_pgrp = process_group(current);
-	psinfo.pr_sid = prstatus.pr_sid = process_session(current);
+	psinfo.pr_pgrp = prstatus.pr_pgrp = task_pgrp_nr(current);
+	psinfo.pr_sid = prstatus.pr_sid = task_session_nr(current);
 	if (current->pid == current->tgid) {
 		/*
 		 * This is the record for the group leader.  Add in the
--- ./arch/mips/kernel/irixsig.c.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./arch/mips/kernel/irixsig.c	2007-06-14 15:52:54.000000000 +0400
@@ -609,7 +609,7 @@ repeat:
 		p = list_entry(_p,struct task_struct,sibling);
 		if ((type == IRIX_P_PID) && p->pid != pid)
 			continue;
-		if ((type == IRIX_P_PGID) && process_group(p) != pid)
+		if ((type == IRIX_P_PGID) && task_pgrp_nr(p) != pid)
 			continue;
 		if ((p->exit_signal != SIGCHLD))
 			continue;
--- ./arch/mips/kernel/sysirix.c.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./arch/mips/kernel/sysirix.c	2007-06-14 15:52:54.000000000 +0400
@@ -763,11 +763,11 @@ asmlinkage int irix_setpgrp(int flags)
 	printk("[%s:%d] setpgrp(%d) ", current->comm, current->pid, flags);
 #endif
 	if(!flags)
-		error = process_group(current);
+		error = task_pgrp_nr(current);
 	else
 		error = sys_setsid();
 #ifdef DEBUG_PROCGRPS
-	printk("returning %d\n", process_group(current));
+	printk("returning %d\n", task_pgrp_nr(current));
 #endif
 
 	return error;
--- ./arch/sparc64/solaris/misc.c.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./arch/sparc64/solaris/misc.c	2007-06-14 15:52:54.000000000 +0400
@@ -415,7 +415,7 @@ asmlinkage int solaris_procids(int cmd, 
 	
 	switch (cmd) {
 	case 0: /* getpgrp */
-		return process_group(current);
+		return task_pgrp_nr(current);
 	case 1: /* setpgrp */
 		{
 			int (*sys_setpgid)(pid_t,pid_t) =
@@ -426,7 +426,7 @@ asmlinkage int solaris_procids(int cmd, 
 			ret = sys_setpgid(0, 0);
 			if (ret) return ret;
 			proc_clear_tty(current);
-			return process_group(current);
+			return task_pgrp_nr(current);
 		}
 	case 2: /* getsid */
 		{
--- ./drivers/char/tty_io.c.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./drivers/char/tty_io.c	2007-06-14 15:52:55.000000000 +0400
@@ -3483,7 +3483,7 @@ void __do_SAK(struct tty_struct *tty)
 	/* Kill the entire session */
 	do_each_pid_task(session, PIDTYPE_SID, p) {
 		printk(KERN_NOTICE "SAK: killed process %d"
-			" (%s): process_session(p)==tty->session\n",
+			" (%s): task_session_nr(p)==tty->session\n",
 			p->pid, p->comm);
 		send_sig(SIGKILL, p, 1);
 	} while_each_pid_task(session, PIDTYPE_SID, p);
@@ -3493,7 +3493,7 @@ void __do_SAK(struct tty_struct *tty)
 	do_each_thread(g, p) {
 		if (p->signal->tty == tty) {
 			printk(KERN_NOTICE "SAK: killed process %d"
-			    " (%s): process_session(p)==tty->session\n",
+			    " (%s): task_session_nr(p)==tty->session\n",
 			    p->pid, p->comm);
 			send_sig(SIGKILL, p, 1);
 			continue;
--- ./fs/autofs/inode.c.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./fs/autofs/inode.c	2007-06-14 15:52:55.000000000 +0400
@@ -80,7 +80,7 @@ static int parse_options(char *options, 
 
 	*uid = current->uid;
 	*gid = current->gid;
-	*pgrp = process_group(current);
+	*pgrp = task_pgrp_nr(current);
 
 	*minproto = *maxproto = AUTOFS_PROTO_VERSION;
 
--- ./fs/autofs/root.c.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./fs/autofs/root.c	2007-06-14 15:52:55.000000000 +0400
@@ -215,7 +215,7 @@ static struct dentry *autofs_root_lookup
 	oz_mode = autofs_oz_mode(sbi);
 	DPRINTK(("autofs_lookup: pid = %u, pgrp = %u, catatonic = %d, "
 				"oz_mode = %d\n", pid_nr(task_pid(current)),
-				process_group(current), sbi->catatonic,
+				task_pgrp_nr(current), sbi->catatonic,
 				oz_mode));
 
 	/*
@@ -536,7 +536,7 @@ static int autofs_root_ioctl(struct inod
 	struct autofs_sb_info *sbi = autofs_sbi(inode->i_sb);
 	void __user *argp = (void __user *)arg;
 
-	DPRINTK(("autofs_ioctl: cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u\n",cmd,arg,sbi,process_group(current)));
+	DPRINTK(("autofs_ioctl: cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u\n",cmd,arg,sbi,task_pgrp_nr(current)));
 
 	if (_IOC_TYPE(cmd) != _IOC_TYPE(AUTOFS_IOC_FIRST) ||
 	     _IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT)
--- ./fs/autofs4/autofs_i.h.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./fs/autofs4/autofs_i.h	2007-06-14 15:52:55.000000000 +0400
@@ -131,7 +131,7 @@ static inline struct autofs_info *autofs
    filesystem without "magic".) */
 
 static inline int autofs4_oz_mode(struct autofs_sb_info *sbi) {
-	return sbi->catatonic || process_group(current) == sbi->oz_pgrp;
+	return sbi->catatonic || task_pgrp_nr(current) == sbi->oz_pgrp;
 }
 
 /* Does a dentry have some pending activity? */
--- ./fs/autofs4/inode.c.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./fs/autofs4/inode.c	2007-06-14 15:52:55.000000000 +0400
@@ -226,7 +226,7 @@ static int parse_options(char *options, 
 
 	*uid = current->uid;
 	*gid = current->gid;
-	*pgrp = process_group(current);
+	*pgrp = task_pgrp_nr(current);
 
 	*minproto = AUTOFS_MIN_PROTO_VERSION;
 	*maxproto = AUTOFS_MAX_PROTO_VERSION;
@@ -325,7 +325,7 @@ int autofs4_fill_super(struct super_bloc
 	sbi->pipe = NULL;
 	sbi->catatonic = 1;
 	sbi->exp_timeout = 0;
-	sbi->oz_pgrp = process_group(current);
+	sbi->oz_pgrp = task_pgrp_nr(current);
 	sbi->sb = s;
 	sbi->version = 0;
 	sbi->sub_version = 0;
--- ./fs/autofs4/root.c.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./fs/autofs4/root.c	2007-06-14 15:52:55.000000000 +0400
@@ -582,7 +582,7 @@ static struct dentry *autofs4_lookup(str
 	oz_mode = autofs4_oz_mode(sbi);
 
 	DPRINTK("pid = %u, pgrp = %u, catatonic = %d, oz_mode = %d",
-		 current->pid, process_group(current), sbi->catatonic, oz_mode);
+		 current->pid, task_pgrp_nr(current), sbi->catatonic, oz_mode);
 
 	unhashed = autofs4_lookup_unhashed(sbi, dentry->d_parent, &dentry->d_name);
 	if (!unhashed) {
@@ -973,7 +973,7 @@ static int autofs4_root_ioctl(struct ino
 	void __user *p = (void __user *)arg;
 
 	DPRINTK("cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u",
-		cmd,arg,sbi,process_group(current));
+		cmd,arg,sbi,task_pgrp_nr(current));
 
 	if (_IOC_TYPE(cmd) != _IOC_TYPE(AUTOFS_IOC_FIRST) ||
 	     _IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT)
--- ./fs/binfmt_elf.c.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./fs/binfmt_elf.c	2007-06-14 15:52:55.000000000 +0400
@@ -1394,8 +1394,8 @@ static void fill_prstatus(struct elf_prs
 	prstatus->pr_sighold = p->blocked.sig[0];
 	prstatus->pr_pid = p->pid;
 	prstatus->pr_ppid = p->parent->pid;
-	prstatus->pr_pgrp = process_group(p);
-	prstatus->pr_sid = process_session(p);
+	prstatus->pr_pgrp = task_pgrp_nr(p);
+	prstatus->pr_sid = task_session_nr(p);
 	if (thread_group_leader(p)) {
 		/*
 		 * This is the record for the group leader.  Add in the
@@ -1440,8 +1440,8 @@ static int fill_psinfo(struct elf_prpsin
 
 	psinfo->pr_pid = p->pid;
 	psinfo->pr_ppid = p->parent->pid;
-	psinfo->pr_pgrp = process_group(p);
-	psinfo->pr_sid = process_session(p);
+	psinfo->pr_pgrp = task_pgrp_nr(p);
+	psinfo->pr_sid = task_session_nr(p);
 
 	i = p->state ? ffz(~p->state) + 1 : 0;
 	psinfo->pr_state = i;
--- ./fs/binfmt_elf_fdpic.c.apiren	2007-06-14 12:14:29.000000000 +0400
+++ ./fs/binfmt_elf_fdpic.c	2007-06-14 15:52:55.000000000 +0400
@@ -1344,8 +1344,8 @@ static void fill_prstatus(struct elf_prs
 	prstatus->pr_sighold = p->blocked.sig[0];
 	prstatus->pr_pid = p->pid;
 	prstatus->pr_ppid = p->parent->pid;
-	prstatus->pr_pgrp = process_group(p);
-	prstatus->pr_sid = process_session(p);
+	prstatus->pr_pgrp = task_pgrp_nr(p);
+	prstatus->pr_sid = task_session_nr(p);
 	if (thread_group_leader(p)) {
 		/*
 		 * This is t