vfs: do bulk POLL* -> EPOLL* replacement

This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 files changed, 12 insertions, 12 deletions

diff --git a/kernel/events/core.c b/kernel/events/core.c
index f0549e7..96db9ae 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -4524,7 +4524,7 @@ static __poll_t perf_poll(struct file *file, poll_table *wait)
 {
 	struct perf_event *event = file->private_data;
 	struct ring_buffer *rb;
-	__poll_t events = POLLHUP;
+	__poll_t events = EPOLLHUP;
 
 	poll_wait(file, &event->waitq, wait);
 
diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
index 141aa2c..6c6b3c4 100644
--- a/kernel/events/ring_buffer.c
+++ b/kernel/events/ring_buffer.c
@@ -19,7 +19,7 @@
 
 static void perf_output_wakeup(struct perf_output_handle *handle)
 {
-	atomic_set(&handle->rb->poll, POLLIN);
+	atomic_set(&handle->rb->poll, EPOLLIN);
 
 	handle->event->pending_wakeup = 1;
 	irq_work_queue(&handle->event->pending);
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index db4b9b8..fc11235 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -930,7 +930,7 @@ static __poll_t devkmsg_poll(struct file *file, poll_table *wait)
 	__poll_t ret = 0;
 
 	if (!user)
-		return POLLERR|POLLNVAL;
+		return EPOLLERR|EPOLLNVAL;
 
 	poll_wait(file, &log_wait, wait);
 
@@ -938,9 +938,9 @@ static __poll_t devkmsg_poll(struct file *file, poll_table *wait)
 	if (user->seq < log_next_seq) {
 		/* return error when data has vanished underneath us */
 		if (user->seq < log_first_seq)
-			ret = POLLIN|POLLRDNORM|POLLERR|POLLPRI;
+			ret = EPOLLIN|EPOLLRDNORM|EPOLLERR|EPOLLPRI;
 		else
-			ret = POLLIN|POLLRDNORM;
+			ret = EPOLLIN|EPOLLRDNORM;
 	}
 	logbuf_unlock_irq();
 
diff --git a/kernel/relay.c b/kernel/relay.c
index f7f40a6..c302940 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -924,12 +924,12 @@ static __poll_t relay_file_poll(struct file *filp, poll_table *wait)
 	struct rchan_buf *buf = filp->private_data;
 
 	if (buf->finalized)
-		return POLLERR;
+		return EPOLLERR;
 
 	if (filp->f_mode & FMODE_READ) {
 		poll_wait(filp, &buf->read_wait, wait);
 		if (!relay_buf_empty(buf))
-			mask |= POLLIN | POLLRDNORM;
+			mask |= EPOLLIN | EPOLLRDNORM;
 	}
 
 	return mask;
diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c
index 94ad46d..fe56c4e 100644
--- a/kernel/time/posix-clock.c
+++ b/kernel/time/posix-clock.c
@@ -74,7 +74,7 @@ static __poll_t posix_clock_poll(struct file *fp, poll_table *wait)
 	__poll_t result = 0;
 
 	if (!clk)
-		return POLLERR;
+		return EPOLLERR;
 
 	if (clk->ops.poll)
 		result = clk->ops.poll(clk, fp, wait);
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index ca6930e..dcf1c4d 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -627,7 +627,7 @@ int ring_buffer_wait(struct ring_buffer *buffer, int cpu, bool full)
  * as data is added to any of the @buffer's cpu buffers. Otherwise
  * it will wait for data to be added to a specific cpu buffer.
  *
- * Returns POLLIN | POLLRDNORM if data exists in the buffers,
+ * Returns EPOLLIN | EPOLLRDNORM if data exists in the buffers,
  * zero otherwise.
  */
 __poll_t ring_buffer_poll_wait(struct ring_buffer *buffer, int cpu,
@@ -665,7 +665,7 @@ __poll_t ring_buffer_poll_wait(struct ring_buffer *buffer, int cpu,
 
 	if ((cpu == RING_BUFFER_ALL_CPUS && !ring_buffer_empty(buffer)) ||
 	    (cpu != RING_BUFFER_ALL_CPUS && !ring_buffer_empty_cpu(buffer, cpu)))
-		return POLLIN | POLLRDNORM;
+		return EPOLLIN | EPOLLRDNORM;
 	return 0;
 }
 
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 5660853..20a2300 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5623,13 +5623,13 @@ trace_poll(struct trace_iterator *iter, struct file *filp, poll_table *poll_tabl
 
 	/* Iterators are static, they should be filled or empty */
 	if (trace_buffer_iter(iter, iter->cpu_file))
-		return POLLIN | POLLRDNORM;
+		return EPOLLIN | EPOLLRDNORM;
 
 	if (tr->trace_flags & TRACE_ITER_BLOCK)
 		/*
 		 * Always select as readable when in blocking mode
 		 */
-		return POLLIN | POLLRDNORM;
+		return EPOLLIN | EPOLLRDNORM;
 	else
 		return ring_buffer_poll_wait(iter->trace_buffer->buffer, iter->cpu_file,
 					     filp, poll_table);