libceph: define ceph_decode_pgid() only once
There are two basically identical definitions of __decode_pgid()
in libceph, one in "net/ceph/osdmap.c" and the other in
"net/ceph/osd_client.c". Get rid of both, and instead define
a single inline version in "include/linux/ceph/osdmap.h".
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
index 167daf6..d05cc44 100644
--- a/include/linux/ceph/osdmap.h
+++ b/include/linux/ceph/osdmap.h
@@ -3,6 +3,7 @@
#include <linux/rbtree.h>
#include <linux/ceph/types.h>
+#include <linux/ceph/decode.h>
#include <linux/ceph/ceph_fs.h>
#include <linux/crush/crush.h>
@@ -119,6 +120,29 @@
return &map->osd_addr[osd];
}
+static inline int ceph_decode_pgid(void **p, void *end, struct ceph_pg *pgid)
+{
+ __u8 version;
+
+ if (!ceph_has_room(p, end, 1 + 8 + 4 + 4)) {
+ pr_warning("incomplete pg encoding");
+
+ return -EINVAL;
+ }
+ version = ceph_decode_8(p);
+ if (version > 1) {
+ pr_warning("do not understand pg encoding %d > 1",
+ (int)version);
+ return -EINVAL;
+ }
+
+ pgid->pool = ceph_decode_64(p);
+ pgid->seed = ceph_decode_32(p);
+ *p += 4; /* skip deprecated preferred value */
+
+ return 0;
+}
+
extern struct ceph_osdmap *osdmap_decode(void **p, void *end);
extern 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 69ef653..ca79cad 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -1268,26 +1268,6 @@
complete_all(&req->r_safe_completion); /* fsync waiter */
}
-static int __decode_pgid(void **p, void *end, struct ceph_pg *pgid)
-{
- __u8 v;
-
- ceph_decode_need(p, end, 1 + 8 + 4 + 4, bad);
- v = ceph_decode_8(p);
- if (v > 1) {
- pr_warning("do not understand pg encoding %d > 1", v);
- return -EINVAL;
- }
- pgid->pool = ceph_decode_64(p);
- pgid->seed = ceph_decode_32(p);
- *p += 4;
- return 0;
-
-bad:
- pr_warning("incomplete pg encoding");
- return -EINVAL;
-}
-
/*
* handle osd op reply. either call the callback if it is specified,
* or do the completion to wake up the waiting thread.
@@ -1321,7 +1301,7 @@
ceph_decode_need(&p, end, object_len, bad);
p += object_len;
- err = __decode_pgid(&p, end, &pg);
+ err = ceph_decode_pgid(&p, end, &pg);
if (err)
goto bad;
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 0989871..603ddd9 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -654,24 +654,6 @@
return 0;
}
-static int __decode_pgid(void **p, void *end, struct ceph_pg *pg)
-{
- u8 v;
-
- ceph_decode_need(p, end, 1+8+4+4, bad);
- v = ceph_decode_8(p);
- if (v != 1)
- goto bad;
- pg->pool = ceph_decode_64(p);
- pg->seed = ceph_decode_32(p);
- *p += 4; /* skip preferred */
- return 0;
-
-bad:
- dout("error decoding pgid\n");
- return -EINVAL;
-}
-
/*
* decode a full map.
*/
@@ -765,7 +747,7 @@
struct ceph_pg pgid;
struct ceph_pg_mapping *pg;
- err = __decode_pgid(p, end, &pgid);
+ err = ceph_decode_pgid(p, end, &pgid);
if (err)
goto bad;
ceph_decode_need(p, end, sizeof(u32), bad);
@@ -983,7 +965,7 @@
struct ceph_pg pgid;
u32 pglen;
- err = __decode_pgid(p, end, &pgid);
+ err = ceph_decode_pgid(p, end, &pgid);
if (err)
goto bad;
ceph_decode_need(p, end, sizeof(u32), bad);