multifd: remove used parameter from send_recv_pages() method

It is already there as p->pages->num.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/multifd-zlib.c

@@ -230,17 +230,16 @@ static void zlib_recv_cleanup(MultiFDRecvParams *p)
  * Returns 0 for success or -1 for error
  *
  * @p: Params for the channel that we are using
- * @used: number of pages used
  * @errp: pointer to an error
  */
-static int zlib_recv_pages(MultiFDRecvParams *p, uint32_t used, Error **errp)
+static int zlib_recv_pages(MultiFDRecvParams *p, Error **errp)
 {
     struct zlib_data *z = p->data;
     z_stream *zs = &z->zs;
     uint32_t in_size = p->next_packet_size;
     /* we measure the change of total_out */
     uint32_t out_size = zs->total_out;
-    uint32_t expected_size = used * qemu_target_page_size();
+    uint32_t expected_size = p->pages->num * qemu_target_page_size();
     uint32_t flags = p->flags & MULTIFD_FLAG_COMPRESSION_MASK;
     int ret;
     int i;
@@ -259,12 +258,12 @@ static int zlib_recv_pages(MultiFDRecvParams *p, uint32_t used, Error **errp)
     zs->avail_in = in_size;
     zs->next_in = z->zbuff;
 
-    for (i = 0; i < used; i++) {
+    for (i = 0; i < p->pages->num; i++) {
         struct iovec *iov = &p->pages->iov[i];
         int flush = Z_NO_FLUSH;
         unsigned long start = zs->total_out;
 
-        if (i == used - 1) {
+        if (i == p->pages->num - 1) {
             flush = Z_SYNC_FLUSH;
         }
 

migration/multifd-zstd.c

@@ -250,14 +250,13 @@ static void zstd_recv_cleanup(MultiFDRecvParams *p)
  * Returns 0 for success or -1 for error
  *
  * @p: Params for the channel that we are using
- * @used: number of pages used
  * @errp: pointer to an error
  */
-static int zstd_recv_pages(MultiFDRecvParams *p, uint32_t used, Error **errp)
+static int zstd_recv_pages(MultiFDRecvParams *p, Error **errp)
 {
     uint32_t in_size = p->next_packet_size;
     uint32_t out_size = 0;
-    uint32_t expected_size = used * qemu_target_page_size();
+    uint32_t expected_size = p->pages->num * qemu_target_page_size();
     uint32_t flags = p->flags & MULTIFD_FLAG_COMPRESSION_MASK;
     struct zstd_data *z = p->data;
     int ret;
@@ -278,7 +277,7 @@ static int zstd_recv_pages(MultiFDRecvParams *p, uint32_t used, Error **errp)
     z->in.size = in_size;
     z->in.pos = 0;
 
-    for (i = 0; i < used; i++) {
+    for (i = 0; i < p->pages->num; i++) {
         struct iovec *iov = &p->pages->iov[i];
 
         z->out.dst = iov->iov_base;

migration/multifd.c

@@ -141,10 +141,9 @@ static void nocomp_recv_cleanup(MultiFDRecvParams *p)
  * Returns 0 for success or -1 for error
  *
  * @p: Params for the channel that we are using
- * @used: number of pages used
  * @errp: pointer to an error
  */
-static int nocomp_recv_pages(MultiFDRecvParams *p, uint32_t used, Error **errp)
+static int nocomp_recv_pages(MultiFDRecvParams *p, Error **errp)
 {
     uint32_t flags = p->flags & MULTIFD_FLAG_COMPRESSION_MASK;
 
@@ -153,7 +152,7 @@ static int nocomp_recv_pages(MultiFDRecvParams *p, uint32_t used, Error **errp)
                    p->id, flags, MULTIFD_FLAG_NOCOMP);
         return -1;
     }
-    return qio_channel_readv_all(p->c, p->pages->iov, used, errp);
+    return qio_channel_readv_all(p->c, p->pages->iov, p->pages->num, errp);
 }
 
 static MultiFDMethods multifd_nocomp_ops = {
@@ -1099,7 +1098,7 @@ static void *multifd_recv_thread(void *opaque)
         qemu_mutex_unlock(&p->mutex);
 
         if (used) {
-            ret = multifd_recv_state->ops->recv_pages(p, used, &local_err);
+            ret = multifd_recv_state->ops->recv_pages(p, &local_err);
             if (ret != 0) {
                 break;
             }

migration/multifd.h

@@ -167,7 +167,7 @@ typedef struct {
     /* Cleanup for receiving side */
     void (*recv_cleanup)(MultiFDRecvParams *p);
     /* Read all pages */
-    int (*recv_pages)(MultiFDRecvParams *p, uint32_t used, Error **errp);
+    int (*recv_pages)(MultiFDRecvParams *p, Error **errp);
 } MultiFDMethods;
 
 void multifd_register_ops(int method, MultiFDMethods *ops);