libceph: allocate dummy osdmap in ceph_osdc_init()
This leads to a simpler osdmap handling code, particularly when dealing
with pi->was_full, which is introduced in a later commit.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
index 420bb79..8468c73 100644
--- a/include/linux/ceph/osdmap.h
+++ b/include/linux/ceph/osdmap.h
@@ -225,6 +225,7 @@
return 0;
}
+struct ceph_osdmap *ceph_osdmap_alloc(void);
extern struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end);
struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
struct ceph_osdmap *map);
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 41dabce..9c35fd8 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -2255,7 +2255,7 @@
struct ceph_fsid fsid;
bool was_full;
- dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0);
+ dout("handle_map have %u\n", osdc->osdmap->epoch);
p = msg->front.iov_base;
end = p + msg->front.iov_len;
@@ -2278,7 +2278,7 @@
maplen = ceph_decode_32(&p);
ceph_decode_need(&p, end, maplen, bad);
next = p + maplen;
- if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) {
+ if (osdc->osdmap->epoch+1 == epoch) {
dout("applying incremental map %u len %d\n",
epoch, maplen);
newmap = osdmap_apply_incremental(&p, next,
@@ -2317,7 +2317,7 @@
if (nr_maps > 1) {
dout("skipping non-latest full map %u len %d\n",
epoch, maplen);
- } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) {
+ } else if (osdc->osdmap->epoch >= epoch) {
dout("skipping full map %u len %d, "
"older than our %u\n", epoch, maplen,
osdc->osdmap->epoch);
@@ -2347,8 +2347,6 @@
nr_maps--;
}
- if (!osdc->osdmap)
- goto bad;
done:
downgrade_write(&osdc->map_sem);
ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP,
@@ -2690,7 +2688,6 @@
dout("init\n");
osdc->client = client;
- osdc->osdmap = NULL;
init_rwsem(&osdc->map_sem);
mutex_init(&osdc->request_mutex);
osdc->last_tid = 0;
@@ -2709,10 +2706,14 @@
osdc->event_count = 0;
err = -ENOMEM;
+ osdc->osdmap = ceph_osdmap_alloc();
+ if (!osdc->osdmap)
+ goto out;
+
osdc->req_mempool = mempool_create_slab_pool(10,
ceph_osd_request_cache);
if (!osdc->req_mempool)
- goto out;
+ goto out_map;
err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP,
PAGE_SIZE, 10, true, "osd_op");
@@ -2741,6 +2742,8 @@
ceph_msgpool_destroy(&osdc->msgpool_op);
out_mempool:
mempool_destroy(osdc->req_mempool);
+out_map:
+ ceph_osdmap_destroy(osdc->osdmap);
out:
return err;
}
@@ -2760,10 +2763,7 @@
}
mutex_unlock(&osdc->request_mutex);
- if (osdc->osdmap) {
- ceph_osdmap_destroy(osdc->osdmap);
- osdc->osdmap = NULL;
- }
+ ceph_osdmap_destroy(osdc->osdmap);
mempool_destroy(osdc->req_mempool);
ceph_msgpool_destroy(&osdc->msgpool_op);
ceph_msgpool_destroy(&osdc->msgpool_op_reply);
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 7d4a5b4..cde52e9 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -707,6 +707,23 @@
/*
* osd map
*/
+struct ceph_osdmap *ceph_osdmap_alloc(void)
+{
+ struct ceph_osdmap *map;
+
+ map = kzalloc(sizeof(*map), GFP_NOIO);
+ if (!map)
+ return NULL;
+
+ map->pg_pools = RB_ROOT;
+ map->pool_max = -1;
+ map->pg_temp = RB_ROOT;
+ map->primary_temp = RB_ROOT;
+ mutex_init(&map->crush_scratch_mutex);
+
+ return map;
+}
+
void ceph_osdmap_destroy(struct ceph_osdmap *map)
{
dout("osdmap_destroy %p\n", map);
@@ -1230,14 +1247,10 @@
struct ceph_osdmap *map;
int ret;
- map = kzalloc(sizeof(*map), GFP_NOFS);
+ map = ceph_osdmap_alloc();
if (!map)
return ERR_PTR(-ENOMEM);
- map->pg_temp = RB_ROOT;
- map->primary_temp = RB_ROOT;
- mutex_init(&map->crush_scratch_mutex);
-
ret = osdmap_decode(p, end, map);
if (ret) {
ceph_osdmap_destroy(map);