server: don't store command tag on the stack

It'll go out-of-scope, making the server unhappy.

Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/server.c b/server.c
index f53e2c8d161c251469432a71e586b46b83e67416..379ea90b631752c0258d52b2dcd30d276d3ac200 100644 (file)
--- a/server.c
+++ b/server.c
@@ -46,7 +46,7 @@ struct sk_entry {
        int opcode;             /* Actual command fields */
        void *buf;
        off_t size;
-       uint64_t *tagptr;
+       uint64_t tag;
        struct flist_head next; /* Other sk_entry's, if linked command */
 };
 
@@ -536,7 +536,10 @@ static struct sk_entry *fio_net_prep_cmd(uint16_t opcode, void *buf,
                entry->buf = buf;
 
        entry->size = size;
-       entry->tagptr = tagptr;
+       if (tagptr)
+               entry->tag = *tagptr;
+       else
+               entry->tag = 0;
        entry->flags = flags;
        return entry;
 }
@@ -1077,10 +1080,7 @@ static void entry_set_flags_tag(struct sk_entry *entry, struct flist_head *list,
        else
                *flags = 0;
 
-       if (entry->tagptr)
-               *tag = *entry->tagptr;
-       else
-               *tag = 0;
+       *tag = entry->tag;
 }
 
 static int send_vec_entry(struct sk_out *sk_out, struct sk_entry *first)
@@ -1117,16 +1117,13 @@ static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry)
        if (entry->flags & SK_F_VEC)
                ret = send_vec_entry(sk_out, entry);
        else if (entry->flags & SK_F_SIMPLE) {
-               uint64_t tag = 0;
-
-               if (entry->tagptr)
-                       tag = *entry->tagptr;
+               uint64_t tag = entry->tag;
 
                ret = fio_net_send_simple_cmd(sk_out->sk, entry->opcode, tag,
                                                NULL);
        } else {
                ret = fio_net_send_cmd(sk_out->sk, entry->opcode, entry->buf,
-                                       entry->size, entry->tagptr, NULL);
+                                       entry->size, &entry->tag, NULL);
        }
 
        fio_mutex_up(&sk_out->xmit);