ceph: make ceph_msg_new return NULL on failure; clean up, fix callers
Returning ERR_PTR(-ENOMEM) is useless extra work. Return NULL on failure
instead, and fix up the callers (about half of which were wrong anyway).
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/messenger.c b/fs/ceph/messenger.c
index af3b143..fe7d0c5 100644
--- a/fs/ceph/messenger.c
+++ b/fs/ceph/messenger.c
@@ -1402,19 +1402,17 @@
con->in_msg = ceph_alloc_msg(con, &con->in_hdr, &skip);
if (skip) {
/* skip this message */
- dout("alloc_msg returned NULL, skipping message\n");
+ dout("alloc_msg said skip message\n");
con->in_base_pos = -front_len - middle_len - data_len -
sizeof(m->footer);
con->in_tag = CEPH_MSGR_TAG_READY;
con->in_seq++;
return 0;
}
- if (IS_ERR(con->in_msg)) {
- ret = PTR_ERR(con->in_msg);
- con->in_msg = NULL;
+ if (!con->in_msg) {
con->error_msg =
"error allocating memory for incoming message";
- return ret;
+ return -ENOMEM;
}
m = con->in_msg;
m->front.iov_len = 0; /* haven't read it yet */
@@ -2147,7 +2145,7 @@
ceph_msg_put(m);
out:
pr_err("msg_new can't create type %d len %d\n", type, front_len);
- return ERR_PTR(-ENOMEM);
+ return NULL;
}
/*
@@ -2190,10 +2188,7 @@
mutex_unlock(&con->mutex);
msg = con->ops->alloc_msg(con, hdr, skip);
mutex_lock(&con->mutex);
- if (IS_ERR(msg))
- return msg;
-
- if (*skip)
+ if (!msg || *skip)
return NULL;
}
if (!msg) {
@@ -2202,17 +2197,16 @@
if (!msg) {
pr_err("unable to allocate msg type %d len %d\n",
type, front_len);
- return ERR_PTR(-ENOMEM);
+ return NULL;
}
}
memcpy(&msg->hdr, &con->in_hdr, sizeof(con->in_hdr));
if (middle_len) {
ret = ceph_alloc_middle(con, msg);
-
if (ret < 0) {
ceph_msg_put(msg);
- return msg;
+ return NULL;
}
}