Merge Linus master into drm-next

The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.

I've included the patch into the merge to fix the build.

Signed-off-by: Dave Airlie <airlied@redhat.com>

3 files changed, 87 insertions, 48 deletions

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 1295a00ca316..fd02a9ebfc30 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -99,8 +99,8 @@ static inline void task_name(struct seq_file *m, struct task_struct *p)
 	buf = m->buf + m->count;
 
 	/* Ignore error for now */
-	string_escape_str(tcomm, &buf, m->size - m->count,
-			  ESCAPE_SPACE | ESCAPE_SPECIAL, "\n\\");
+	buf += string_escape_str(tcomm, buf, m->size - m->count,
+				 ESCAPE_SPACE | ESCAPE_SPECIAL, "\n\\");
 
 	m->count = buf - m->buf;
 	seq_putc(m, '\n');
@@ -188,6 +188,24 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
 			   from_kgid_munged(user_ns, GROUP_AT(group_info, g)));
 	put_cred(cred);
 
+#ifdef CONFIG_PID_NS
+	seq_puts(m, "\nNStgid:");
+	for (g = ns->level; g <= pid->level; g++)
+		seq_printf(m, "\t%d",
+			task_tgid_nr_ns(p, pid->numbers[g].ns));
+	seq_puts(m, "\nNSpid:");
+	for (g = ns->level; g <= pid->level; g++)
+		seq_printf(m, "\t%d",
+			task_pid_nr_ns(p, pid->numbers[g].ns));
+	seq_puts(m, "\nNSpgid:");
+	for (g = ns->level; g <= pid->level; g++)
+		seq_printf(m, "\t%d",
+			task_pgrp_nr_ns(p, pid->numbers[g].ns));
+	seq_puts(m, "\nNSsid:");
+	for (g = ns->level; g <= pid->level; g++)
+		seq_printf(m, "\t%d",
+			task_session_nr_ns(p, pid->numbers[g].ns));
+#endif
 	seq_putc(m, '\n');
 }
 
@@ -614,7 +632,9 @@ static int children_seq_show(struct seq_file *seq, void *v)
 	pid_t pid;
 
 	pid = pid_nr_ns(v, inode->i_sb->s_fs_info);
-	return seq_printf(seq, "%d ", pid);
+	seq_printf(seq, "%d ", pid);
+
+	return 0;
 }
 
 static void *children_seq_start(struct seq_file *seq, loff_t *pos)
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 3f3d7aeb0712..7a3b82f986dd 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -238,13 +238,15 @@ static int proc_pid_wchan(struct seq_file *m, struct pid_namespace *ns,
 
 	wchan = get_wchan(task);
 
-	if (lookup_symbol_name(wchan, symname) < 0)
+	if (lookup_symbol_name(wchan, symname) < 0) {
 		if (!ptrace_may_access(task, PTRACE_MODE_READ))
 			return 0;
-		else
-			return seq_printf(m, "%lu", wchan);
-	else
-		return seq_printf(m, "%s", symname);
+		seq_printf(m, "%lu", wchan);
+	} else {
+		seq_printf(m, "%s", symname);
+	}
+
+	return 0;
 }
 #endif /* CONFIG_KALLSYMS */
 
@@ -309,10 +311,12 @@ static int proc_pid_stack(struct seq_file *m, struct pid_namespace *ns,
 static int proc_pid_schedstat(struct seq_file *m, struct pid_namespace *ns,
 			      struct pid *pid, struct task_struct *task)
 {
-	return seq_printf(m, "%llu %llu %lu\n",
-			(unsigned long long)task->se.sum_exec_runtime,
-			(unsigned long long)task->sched_info.run_delay,
-			task->sched_info.pcount);
+	seq_printf(m, "%llu %llu %lu\n",
+		   (unsigned long long)task->se.sum_exec_runtime,
+		   (unsigned long long)task->sched_info.run_delay,
+		   task->sched_info.pcount);
+
+	return 0;
 }
 #endif
 
@@ -387,7 +391,9 @@ static int proc_oom_score(struct seq_file *m, struct pid_namespace *ns,
 		points = oom_badness(task, NULL, NULL, totalpages) *
 						1000 / totalpages;
 	read_unlock(&tasklist_lock);
-	return seq_printf(m, "%lu\n", points);
+	seq_printf(m, "%lu\n", points);
+
+	return 0;
 }
 
 struct limit_names {
@@ -432,15 +438,15 @@ static int proc_pid_limits(struct seq_file *m, struct pid_namespace *ns,
 	 * print the file header
 	 */
        seq_printf(m, "%-25s %-20s %-20s %-10s\n",
-			"Limit", "Soft Limit", "Hard Limit", "Units");
+		  "Limit", "Soft Limit", "Hard Limit", "Units");
 
 	for (i = 0; i < RLIM_NLIMITS; i++) {
 		if (rlim[i].rlim_cur == RLIM_INFINITY)
 			seq_printf(m, "%-25s %-20s ",
-					 lnames[i].name, "unlimited");
+				   lnames[i].name, "unlimited");
 		else
 			seq_printf(m, "%-25s %-20lu ",
-					 lnames[i].name, rlim[i].rlim_cur);
+				   lnames[i].name, rlim[i].rlim_cur);
 
 		if (rlim[i].rlim_max == RLIM_INFINITY)
 			seq_printf(m, "%-20s ", "unlimited");
@@ -462,7 +468,9 @@ static int proc_pid_syscall(struct seq_file *m, struct pid_namespace *ns,
 {
 	long nr;
 	unsigned long args[6], sp, pc;
-	int res = lock_trace(task);
+	int res;
+
+	res = lock_trace(task);
 	if (res)
 		return res;
 
@@ -477,7 +485,8 @@ static int proc_pid_syscall(struct seq_file *m, struct pid_namespace *ns,
 		       args[0], args[1], args[2], args[3], args[4], args[5],
 		       sp, pc);
 	unlock_trace(task);
-	return res;
+
+	return 0;
 }
 #endif /* CONFIG_HAVE_ARCH_TRACEHOOK */
 
@@ -2002,12 +2011,13 @@ static int show_timer(struct seq_file *m, void *v)
 	notify = timer->it_sigev_notify;
 
 	seq_printf(m, "ID: %d\n", timer->it_id);
-	seq_printf(m, "signal: %d/%p\n", timer->sigq->info.si_signo,
-			timer->sigq->info.si_value.sival_ptr);
+	seq_printf(m, "signal: %d/%p\n",
+		   timer->sigq->info.si_signo,
+		   timer->sigq->info.si_value.sival_ptr);
 	seq_printf(m, "notify: %s/%s.%d\n",
-		nstr[notify & ~SIGEV_THREAD_ID],
-		(notify & SIGEV_THREAD_ID) ? "tid" : "pid",
-		pid_nr_ns(timer->it_pid, tp->ns));
+		   nstr[notify & ~SIGEV_THREAD_ID],
+		   (notify & SIGEV_THREAD_ID) ? "tid" : "pid",
+		   pid_nr_ns(timer->it_pid, tp->ns));
 	seq_printf(m, "ClockID: %d\n", timer->it_clock);
 
 	return 0;
@@ -2352,21 +2362,23 @@ static int do_io_accounting(struct task_struct *task, struct seq_file *m, int wh
 
 		unlock_task_sighand(task, &flags);
 	}
-	result = seq_printf(m,
-			"rchar: %llu\n"
-			"wchar: %llu\n"
-			"syscr: %llu\n"
-			"syscw: %llu\n"
-			"read_bytes: %llu\n"
-			"write_bytes: %llu\n"
-			"cancelled_write_bytes: %llu\n",
-			(unsigned long long)acct.rchar,
-			(unsigned long long)acct.wchar,
-			(unsigned long long)acct.syscr,
-			(unsigned long long)acct.syscw,
-			(unsigned long long)acct.read_bytes,
-			(unsigned long long)acct.write_bytes,
-			(unsigned long long)acct.cancelled_write_bytes);
+	seq_printf(m,
+		   "rchar: %llu\n"
+		   "wchar: %llu\n"
+		   "syscr: %llu\n"
+		   "syscw: %llu\n"
+		   "read_bytes: %llu\n"
+		   "write_bytes: %llu\n"
+		   "cancelled_write_bytes: %llu\n",
+		   (unsigned long long)acct.rchar,
+		   (unsigned long long)acct.wchar,
+		   (unsigned long long)acct.syscr,
+		   (unsigned long long)acct.syscw,
+		   (unsigned long long)acct.read_bytes,
+		   (unsigned long long)acct.write_bytes,
+		   (unsigned long long)acct.cancelled_write_bytes);
+	result = 0;
+
 out_unlock:
 	mutex_unlock(&task->signal->cred_guard_mutex);
 	return result;
diff --git a/fs/proc/fd.c b/fs/proc/fd.c
index 8e5ad83b629a..af84ad04df77 100644
--- a/fs/proc/fd.c
+++ b/fs/proc/fd.c
@@ -8,6 +8,7 @@
 #include <linux/security.h>
 #include <linux/file.h>
 #include <linux/seq_file.h>
+#include <linux/fs.h>
 
 #include <linux/proc_fs.h>
 
@@ -48,17 +49,23 @@ static int seq_show(struct seq_file *m, void *v)
 		put_files_struct(files);
 	}
 
-	if (!ret) {
-		seq_printf(m, "pos:\t%lli\nflags:\t0%o\nmnt_id:\t%i\n",
-			   (long long)file->f_pos, f_flags,
-			   real_mount(file->f_path.mnt)->mnt_id);
-		if (file->f_op->show_fdinfo)
-			file->f_op->show_fdinfo(m, file);
-		ret = seq_has_overflowed(m);
-		fput(file);
-	}
+	if (ret)
+		return ret;
 
-	return ret;
+	seq_printf(m, "pos:\t%lli\nflags:\t0%o\nmnt_id:\t%i\n",
+		   (long long)file->f_pos, f_flags,
+		   real_mount(file->f_path.mnt)->mnt_id);
+
+	show_fd_locks(m, file, files);
+	if (seq_has_overflowed(m))
+		goto out;
+
+	if (file->f_op->show_fdinfo)
+		file->f_op->show_fdinfo(m, file);
+
+out:
+	fput(file);
+	return 0;
 }
 
 static int seq_fdinfo_open(struct inode *inode, struct file *file)