linux-kernel - [PATCH -mm] fs: proc -- Make /proc/<pid>/map_files being CHECKPOINT

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Date:	Wed, 21 Dec 2011 17:22:56 +0400
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Pavel Emelyanov <xemul@...allels.com>, Tejun Heo <tj@...nel.org>,
	Vasiliy Kulikov <segoon@...nwall.com>,
	Andrey Vagin <avagin@...nvz.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH -mm] fs: proc -- Make /proc/<pid>/map_files being
 CHECKPOINT_RESTORE dependent

This entry was introduced in a sake of C/R, so no need to
built it in by default.

Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.org>
---

For -mm tree

 fs/proc/base.c |    6 ++++++
 1 file changed, 6 insertions(+)

Index: linux-2.6.git/fs/proc/base.c
===================================================================
--- linux-2.6.git.orig/fs/proc/base.c
+++ linux-2.6.git/fs/proc/base.c
@@ -2160,6 +2160,8 @@ static const struct file_operations proc
 	.llseek		= default_llseek,
 };
 
+#ifdef CONFIG_CHECKPOINT_RESTORE
+
 /*
  * dname_to_vma_addr - maps a dentry name into two unsigned longs
  * which represent vma start and end addresses.
@@ -2505,6 +2507,8 @@ static const struct file_operations proc
 	.llseek		= default_llseek,
 };
 
+#endif /* CONFIG_CHECKPOINT_RESTORE */
+
 /*
  * /proc/pid/fd needs a special permission handler so that a process can still
  * access /proc/self/fd after it has executed a setuid().
@@ -3120,7 +3124,9 @@ static const struct inode_operations pro
 static const struct pid_entry tgid_base_stuff[] = {
 	DIR("task",       S_IRUGO|S_IXUGO, proc_task_inode_operations, proc_task_operations),
 	DIR("fd",         S_IRUSR|S_IXUSR, proc_fd_inode_operations, proc_fd_operations),
+#ifdef CONFIG_CHECKPOINT_RESTORE
 	DIR("map_files",  S_IRUSR|S_IXUSR, proc_map_files_inode_operations, proc_map_files_operations),
+#endif
 	DIR("fdinfo",     S_IRUSR|S_IXUSR, proc_fdinfo_inode_operations, proc_fdinfo_operations),
 	DIR("ns",	  S_IRUSR|S_IXUGO, proc_ns_dir_inode_operations, proc_ns_dir_operations),
 #ifdef CONFIG_NET
--
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