Merge branch 'mw-3.1-jul25' of git://oss.oracle.com/git/smushran/linux-2.6 into ocfs2-fixes

1 files changed, 9 insertions, 10 deletions

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 14def991d9dd..91fb655a5cbf 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -216,7 +216,7 @@ static struct mm_struct *__check_mem_permission(struct task_struct *task)
         if (task_is_stopped_or_traced(task)) {
                 int match;
                 rcu_read_lock();
-                match = (tracehook_tracer_task(task) == current);
+                match = (ptrace_parent(task) == current);
                 rcu_read_unlock();
                 if (match && ptrace_may_access(task, PTRACE_MODE_ATTACH))
                         return mm;
@@ -673,7 +673,7 @@ static int mounts_open_common(struct inode *inode, struct file *file,
         p->m.private = p;
         p->ns = ns;
         p->root = root;
-        p->event = ns->event;
+        p->m.poll_event = ns->event;
 
         return 0;
 
@@ -2167,13 +2167,9 @@ static const struct file_operations proc_fd_operations = {
  * /proc/pid/fd needs a special permission handler so that a process can still
  * access /proc/self/fd after it has executed a setuid().
  */
-static int proc_fd_permission(struct inode *inode, int mask, unsigned int flags)
+static int proc_fd_permission(struct inode *inode, int mask)
 {
-        int rv;
-
-        if (flags & IPERM_FLAG_RCU)
-                return -ECHILD;
-        rv = generic_permission(inode, mask, flags, NULL);
+        int rv = generic_permission(inode, mask);
         if (rv == 0)
                 return 0;
         if (task_pid(current) == proc_pid(inode))
@@ -2712,6 +2708,9 @@ static int do_io_accounting(struct task_struct *task, char *buffer, int whole)
         struct task_io_accounting acct = task->ioac;
         unsigned long flags;
 
+        if (!ptrace_may_access(task, PTRACE_MODE_READ))
+                return -EACCES;
+
         if (whole && lock_task_sighand(task, &flags)) {
                 struct task_struct *t = task;
 
@@ -2843,7 +2842,7 @@ static const struct pid_entry tgid_base_stuff[] = {
         REG("coredump_filter", S_IRUGO|S_IWUSR, proc_coredump_filter_operations),
 #endif
 #ifdef CONFIG_TASK_IO_ACCOUNTING
-        INF("io",       S_IRUGO, proc_tgid_io_accounting),
+        INF("io",       S_IRUSR, proc_tgid_io_accounting),
 #endif
 #ifdef CONFIG_HARDWALL
         INF("hardwall",   S_IRUGO, proc_pid_hardwall),
@@ -3185,7 +3184,7 @@ static const struct pid_entry tid_base_stuff[] = {
         REG("make-it-fail", S_IRUGO|S_IWUSR, proc_fault_inject_operations),
 #endif
 #ifdef CONFIG_TASK_IO_ACCOUNTING
-        INF("io",       S_IRUGO, proc_tid_io_accounting),
+        INF("io",       S_IRUSR, proc_tid_io_accounting),
 #endif
 #ifdef CONFIG_HARDWALL
         INF("hardwall",   S_IRUGO, proc_pid_hardwall),