multifd: remove used parameter from send_prepare() 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>

4 files changed, 10 insertions, 15 deletions

diff --git a/migration/multifd-zlib.c b/migration/multifd-zlib.c
index d0437cce2a..28f0ed933b 100644
--- a/migration/multifd-zlib.c
+++ b/migration/multifd-zlib.c
@@ -94,10 +94,9 @@ static void zlib_send_cleanup(MultiFDSendParams *p, Error **errp)
  * 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_send_prepare(MultiFDSendParams *p, uint32_t used, Error **errp)
+static int zlib_send_prepare(MultiFDSendParams *p, Error **errp)
 {
     struct iovec *iov = p->pages->iov;
     struct zlib_data *z = p->data;
@@ -106,11 +105,11 @@ static int zlib_send_prepare(MultiFDSendParams *p, uint32_t used, Error **errp)
     int ret;
     uint32_t i;
 
-    for (i = 0; i < used; i++) {
+    for (i = 0; i < p->pages->num; i++) {
         uint32_t available = z->zbuff_len - out_size;
         int flush = Z_NO_FLUSH;
 
-        if (i == used - 1) {
+        if (i == p->pages->num - 1) {
             flush = Z_SYNC_FLUSH;
         }
 
diff --git a/migration/multifd-zstd.c b/migration/multifd-zstd.c
index 09ae1cf91a..4a71e96e06 100644
--- a/migration/multifd-zstd.c
+++ b/migration/multifd-zstd.c
@@ -107,10 +107,9 @@ static void zstd_send_cleanup(MultiFDSendParams *p, Error **errp)
  * 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_send_prepare(MultiFDSendParams *p, uint32_t used, Error **errp)
+static int zstd_send_prepare(MultiFDSendParams *p, Error **errp)
 {
     struct iovec *iov = p->pages->iov;
     struct zstd_data *z = p->data;
@@ -121,10 +120,10 @@ static int zstd_send_prepare(MultiFDSendParams *p, uint32_t used, Error **errp)
     z->out.size = z->zbuff_len;
     z->out.pos = 0;
 
-    for (i = 0; i < used; i++) {
+    for (i = 0; i < p->pages->num; i++) {
         ZSTD_EndDirective flush = ZSTD_e_continue;
 
-        if (i == used - 1) {
+        if (i == p->pages->num - 1) {
             flush = ZSTD_e_flush;
         }
         z->in.src = iov[i].iov_base;
diff --git a/migration/multifd.c b/migration/multifd.c
index ce7101cf9d..098ef8842c 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -82,13 +82,11 @@ static void nocomp_send_cleanup(MultiFDSendParams *p, Error **errp)
  * 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_send_prepare(MultiFDSendParams *p, uint32_t used,
-                               Error **errp)
+static int nocomp_send_prepare(MultiFDSendParams *p, Error **errp)
 {
-    p->next_packet_size = used * qemu_target_page_size();
+    p->next_packet_size = p->pages->num * qemu_target_page_size();
     p->flags |= MULTIFD_FLAG_NOCOMP;
     return 0;
 }
@@ -654,8 +652,7 @@ static void *multifd_send_thread(void *opaque)
             uint32_t flags = p->flags;
 
             if (used) {
-                ret = multifd_send_state->ops->send_prepare(p, used,
-                                                            &local_err);
+                ret = multifd_send_state->ops->send_prepare(p, &local_err);
                 if (ret != 0) {
                     qemu_mutex_unlock(&p->mutex);
                     break;
diff --git a/migration/multifd.h b/migration/multifd.h
index 86820dd028..7968cc5c20 100644
--- a/migration/multifd.h
+++ b/migration/multifd.h
@@ -159,7 +159,7 @@ typedef struct {
     /* Cleanup for sending side */
     void (*send_cleanup)(MultiFDSendParams *p, Error **errp);
     /* Prepare the send packet */
-    int (*send_prepare)(MultiFDSendParams *p, uint32_t used, Error **errp);
+    int (*send_prepare)(MultiFDSendParams *p, Error **errp);
     /* Write the send packet */
     int (*send_write)(MultiFDSendParams *p, uint32_t used, Error **errp);
     /* Setup for receiving side */