diff options
| author | Ilya Dryomov <ilya.dryomov@inktank.com> | 2014-03-13 15:36:13 +0100 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2014-04-05 06:07:37 +0200 |
| commit | a2505d63ee0541d9b4685250b033192e68222e97 (patch) | |
| tree | 887b25757a76a7738290c17fb8ecd095bc0e68dd /net | |
| parent | libceph: dump osdmap and enhance output on decode errors (diff) | |
| download | linux-a2505d63ee0541d9b4685250b033192e68222e97.tar.xz linux-a2505d63ee0541d9b4685250b033192e68222e97.zip | |
libceph: split osdmap allocation and decode steps
Split osdmap allocation and initialization into a separate function,
ceph_osdmap_decode().
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ceph/osd_client.c | 2 | ||||
| -rw-r--r-- | net/ceph/osdmap.c | 44 |
2 files changed, 30 insertions, 16 deletions
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 71830d79b0f4..6f64eec18851 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -2062,7 +2062,7 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) int skipped_map = 0; dout("taking full map %u len %d\n", epoch, maplen); - newmap = osdmap_decode(&p, p+maplen); + newmap = ceph_osdmap_decode(&p, p+maplen); if (IS_ERR(newmap)) { err = PTR_ERR(newmap); goto bad; diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c index 4dd000d128fd..a82df6ea0749 100644 --- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -684,9 +684,8 @@ static int osdmap_set_max_osd(struct ceph_osdmap *map, int max) /* * decode a full map. */ -struct ceph_osdmap *osdmap_decode(void **p, void *end) +static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map) { - struct ceph_osdmap *map; u16 version; u32 len, max, i; int err = -EINVAL; @@ -694,14 +693,7 @@ struct ceph_osdmap *osdmap_decode(void **p, void *end) void *start = *p; struct ceph_pg_pool_info *pi; - dout("osdmap_decode %p to %p len %d\n", *p, end, (int)(end - *p)); - - map = kzalloc(sizeof(*map), GFP_NOFS); - if (map == NULL) - return ERR_PTR(-ENOMEM); - - map->pg_temp = RB_ROOT; - mutex_init(&map->crush_scratch_mutex); + dout("%s %p to %p len %d\n", __func__, *p, end, (int)(end - *p)); ceph_decode_16_safe(p, end, version, bad); if (version > 6) { @@ -751,7 +743,6 @@ struct ceph_osdmap *osdmap_decode(void **p, void *end) err = osdmap_set_max_osd(map, max); if (err < 0) goto bad; - dout("osdmap_decode max_osd = %d\n", map->max_osd); /* osds */ err = -EINVAL; @@ -819,7 +810,7 @@ struct ceph_osdmap *osdmap_decode(void **p, void *end) *p = end; dout("full osdmap epoch %d max_osd %d\n", map->epoch, map->max_osd); - return map; + return 0; bad: pr_err("corrupt full osdmap (%d) epoch %d off %d (%p of %p-%p)\n", @@ -827,8 +818,31 @@ bad: print_hex_dump(KERN_DEBUG, "osdmap: ", DUMP_PREFIX_OFFSET, 16, 1, start, end - start, true); - ceph_osdmap_destroy(map); - return ERR_PTR(err); + return err; +} + +/* + * Allocate and decode a full map. + */ +struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end) +{ + struct ceph_osdmap *map; + int ret; + + map = kzalloc(sizeof(*map), GFP_NOFS); + if (!map) + return ERR_PTR(-ENOMEM); + + map->pg_temp = RB_ROOT; + mutex_init(&map->crush_scratch_mutex); + + ret = osdmap_decode(p, end, map); + if (ret) { + ceph_osdmap_destroy(map); + return ERR_PTR(ret); + } + + return map; } /* @@ -872,7 +886,7 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, if (len > 0) { dout("apply_incremental full map len %d, %p to %p\n", len, *p, end); - return osdmap_decode(p, min(*p+len, end)); + return ceph_osdmap_decode(p, min(*p+len, end)); } /* new crush? */ |