kernel/relay.c: remove unused function argument actor

Currently argument `actor' is never used in the relay reading path, so
remove it.

Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 8 deletions

diff --git a/kernel/relay.c b/kernel/relay.c
index 01ab081ac53a..d21006c4a3cc 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -1099,8 +1099,7 @@ static size_t relay_file_read_end_pos(struct rchan_buf *buf,
 static int subbuf_read_actor(size_t read_start,
                              struct rchan_buf *buf,
                              size_t avail,
-                             read_descriptor_t *desc,
-                             read_actor_t actor)
+                             read_descriptor_t *desc)
 {
         void *from;
         int ret = 0;
@@ -1121,15 +1120,13 @@ static int subbuf_read_actor(size_t read_start,
 typedef int (*subbuf_actor_t) (size_t read_start,
                                struct rchan_buf *buf,
                                size_t avail,
-                               read_descriptor_t *desc,
-                               read_actor_t actor);
+                               read_descriptor_t *desc);
 
 /*
  *      relay_file_read_subbufs - read count bytes, bridging subbuf boundaries
  */
 static ssize_t relay_file_read_subbufs(struct file *filp, loff_t *ppos,
                                         subbuf_actor_t subbuf_actor,
-                                        read_actor_t actor,
                                         read_descriptor_t *desc)
 {
         struct rchan_buf *buf = filp->private_data;
@@ -1150,7 +1147,7 @@ static ssize_t relay_file_read_subbufs(struct file *filp, loff_t *ppos,
                         break;
 
                 avail = min(desc->count, avail);
-                ret = subbuf_actor(read_start, buf, avail, desc, actor);
+                ret = subbuf_actor(read_start, buf, avail, desc);
                 if (desc->error < 0)
                         break;
 
@@ -1174,8 +1171,7 @@ static ssize_t relay_file_read(struct file *filp,
         desc.count = count;
         desc.arg.buf = buffer;
         desc.error = 0;
-        return relay_file_read_subbufs(filp, ppos, subbuf_read_actor,
-                                       NULL, &desc);
+        return relay_file_read_subbufs(filp, ppos, subbuf_read_actor, &desc);
 }
 
 static void relay_consume_bytes(struct rchan_buf *rbuf, int bytes_consumed)