libceph: kill args in read_partial_message_bio()

There is only one caller for read_partial_message_bio(), and it
always passes &msg->bio_iter and &bio_seg as the second and third
arguments.  Furthermore, the message in question is always the
connection's in_msg, and we can get that inside the called function.

So drop those two parameters and use their derived equivalents.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index 962b2cd10f43..2017b8833baa 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -1819,14 +1819,16 @@ static int read_partial_message_pages(struct ceph_connection *con,
 
 #ifdef CONFIG_BLOCK
 static int read_partial_message_bio(struct ceph_connection *con,
-                                    struct bio **bio_iter,
-                                    unsigned int *bio_seg,
                                     unsigned int data_len, bool do_datacrc)
 {
-        struct bio_vec *bv = bio_iovec_idx(*bio_iter, *bio_seg);
+        struct ceph_msg *msg = con->in_msg;
+        struct bio_vec *bv;
         void *p;
         int ret, left;
 
+        BUG_ON(!msg);
+        BUG_ON(!msg->bio_iter);
+        bv = bio_iovec_idx(msg->bio_iter, msg->bio_seg);
         left = min((int)(data_len - con->in_msg_pos.data_pos),
                    (int)(bv->bv_len - con->in_msg_pos.page_pos));
 
@@ -1845,7 +1847,7 @@ static int read_partial_message_bio(struct ceph_connection *con,
         con->in_msg_pos.page_pos += ret;
         if (con->in_msg_pos.page_pos == bv->bv_len) {
                 con->in_msg_pos.page_pos = 0;
-                iter_bio_next(bio_iter, bio_seg);
+                iter_bio_next(&msg->bio_iter, &msg->bio_seg);
         }
 
         return ret;
@@ -1975,9 +1977,7 @@ static int read_partial_message(struct ceph_connection *con)
                                 return ret;
 #ifdef CONFIG_BLOCK
                 } else if (m->bio) {
-                        BUG_ON(!m->bio_iter);
                         ret = read_partial_message_bio(con,
-                                                 &m->bio_iter, &m->bio_seg,
                                                  data_len, do_datacrc);
                         if (ret <= 0)
                                 return ret;