diff options
| -rw-r--r-- | drivers/block/rbd.c | 8 | ||||
| -rw-r--r-- | fs/ceph/addr.c | 6 | ||||
| -rw-r--r-- | fs/ceph/file.c | 2 | ||||
| -rw-r--r-- | fs/ceph/ioctl.c | 2 | ||||
| -rw-r--r-- | include/linux/ceph/osdmap.h | 62 | ||||
| -rw-r--r-- | net/ceph/debugfs.c | 2 | ||||
| -rw-r--r-- | net/ceph/osd_client.c | 16 | ||||
| -rw-r--r-- | net/ceph/osdmap.c | 93 |
8 files changed, 150 insertions, 41 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index bda4deade82e..3bf93a2a20f0 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1965,7 +1965,9 @@ static struct ceph_osd_request *rbd_osd_req_create( osd_req->r_priv = obj_request; osd_req->r_base_oloc.pool = ceph_file_layout_pg_pool(rbd_dev->layout); - ceph_oid_set_name(&osd_req->r_base_oid, obj_request->object_name); + if (ceph_oid_aprintf(&osd_req->r_base_oid, GFP_NOIO, "%s", + obj_request->object_name)) + goto fail; if (ceph_osdc_alloc_messages(osd_req, GFP_NOIO)) goto fail; @@ -2017,7 +2019,9 @@ rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request) osd_req->r_priv = obj_request; osd_req->r_base_oloc.pool = ceph_file_layout_pg_pool(rbd_dev->layout); - ceph_oid_set_name(&osd_req->r_base_oid, obj_request->object_name); + if (ceph_oid_aprintf(&osd_req->r_base_oid, GFP_NOIO, "%s", + obj_request->object_name)) + goto fail; if (ceph_osdc_alloc_messages(osd_req, GFP_NOIO)) goto fail; diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 6fee7e0b8931..6f28dd9bacb2 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -1758,9 +1758,7 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci, u32 pool) rd_req->r_flags = CEPH_OSD_FLAG_READ; osd_req_op_init(rd_req, 0, CEPH_OSD_OP_STAT, 0); rd_req->r_base_oloc.pool = pool; - snprintf(rd_req->r_base_oid.name, sizeof(rd_req->r_base_oid.name), - "%llx.00000000", ci->i_vino.ino); - rd_req->r_base_oid.name_len = strlen(rd_req->r_base_oid.name); + ceph_oid_printf(&rd_req->r_base_oid, "%llx.00000000", ci->i_vino.ino); err = ceph_osdc_alloc_messages(rd_req, GFP_NOFS); if (err) @@ -1777,7 +1775,7 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci, u32 pool) CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK; osd_req_op_init(wr_req, 0, CEPH_OSD_OP_CREATE, CEPH_OSD_OP_FLAG_EXCL); wr_req->r_base_oloc.pool = pool; - wr_req->r_base_oid = rd_req->r_base_oid; + ceph_oid_copy(&wr_req->r_base_oid, &rd_req->r_base_oid); err = ceph_osdc_alloc_messages(wr_req, GFP_NOFS); if (err) diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 5d46d106bbb7..9d470397e249 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -715,7 +715,7 @@ static void ceph_aio_retry_work(struct work_struct *work) CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE; req->r_base_oloc = orig_req->r_base_oloc; - req->r_base_oid = orig_req->r_base_oid; + ceph_oid_copy(&req->r_base_oid, &orig_req->r_base_oid); ret = ceph_osdc_alloc_messages(req, GFP_NOFS); if (ret) { diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index f851d8d70158..db296709784a 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -213,7 +213,7 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg) ceph_ino(inode), dl.object_no); oloc.pool = ceph_file_layout_pg_pool(ci->i_layout); - ceph_oid_set_name(&oid, dl.object_name); + ceph_oid_printf(&oid, "%s", dl.object_name); r = ceph_oloc_oid_to_pg(osdc->osdmap, &oloc, &oid, &pgid); if (r < 0) { diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h index e55c08bc3a96..777a29412706 100644 --- a/include/linux/ceph/osdmap.h +++ b/include/linux/ceph/osdmap.h @@ -64,11 +64,47 @@ struct ceph_object_locator { */ #define CEPH_MAX_OID_NAME_LEN 100 +/* + * 51-char inline_name is long enough for all cephfs and all but one + * rbd requests: <imgname> in "<imgname>.rbd"/"rbd_id.<imgname>" can be + * arbitrarily long (~PAGE_SIZE). It's done once during rbd map; all + * other rbd requests fit into inline_name. + * + * Makes ceph_object_id 64 bytes on 64-bit. + */ +#define CEPH_OID_INLINE_LEN 52 + +/* + * Both inline and external buffers have space for a NUL-terminator, + * which is carried around. It's not required though - RADOS object + * names don't have to be NUL-terminated and may contain NULs. + */ struct ceph_object_id { - char name[CEPH_MAX_OID_NAME_LEN]; + char *name; + char inline_name[CEPH_OID_INLINE_LEN]; int name_len; }; +static inline void ceph_oid_init(struct ceph_object_id *oid) +{ + oid->name = oid->inline_name; + oid->name_len = 0; +} + +static inline bool ceph_oid_empty(const struct ceph_object_id *oid) +{ + return oid->name == oid->inline_name && !oid->name_len; +} + +void ceph_oid_copy(struct ceph_object_id *dest, + const struct ceph_object_id *src); +__printf(2, 3) +void ceph_oid_printf(struct ceph_object_id *oid, const char *fmt, ...); +__printf(3, 4) +int ceph_oid_aprintf(struct ceph_object_id *oid, gfp_t gfp, + const char *fmt, ...); +void ceph_oid_destroy(struct ceph_object_id *oid); + struct ceph_pg_mapping { struct rb_node node; struct ceph_pg pgid; @@ -113,30 +149,6 @@ struct ceph_osdmap { int crush_scratch_ary[CEPH_PG_MAX_SIZE * 3]; }; -static inline void ceph_oid_set_name(struct ceph_object_id *oid, - const char *name) -{ - int len; - - len = strlen(name); - if (len > sizeof(oid->name)) { - WARN(1, "ceph_oid_set_name '%s' len %d vs %zu, truncating\n", - name, len, sizeof(oid->name)); - len = sizeof(oid->name); - } - - memcpy(oid->name, name, len); - oid->name_len = len; -} - -static inline void ceph_oid_copy(struct ceph_object_id *dest, - struct ceph_object_id *src) -{ - BUG_ON(src->name_len > sizeof(dest->name)); - memcpy(dest->name, src->name, src->name_len); - dest->name_len = src->name_len; -} - static inline int ceph_osd_exists(struct ceph_osdmap *map, int osd) { return osd >= 0 && osd < map->max_osd && diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c index b902fbc7863e..6f8413293d15 100644 --- a/net/ceph/debugfs.c +++ b/net/ceph/debugfs.c @@ -161,7 +161,7 @@ static int osdc_show(struct seq_file *s, void *pp) req->r_osd ? req->r_osd->o_osd : -1, req->r_pgid.pool, req->r_pgid.seed); - seq_printf(s, "%.*s", req->r_base_oid.name_len, + seq_printf(s, "%*pE", req->r_base_oid.name_len, req->r_base_oid.name); if (req->r_reassert_version.epoch) diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 75e27bd3d372..95910aed8e2e 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -334,7 +334,10 @@ static void ceph_osdc_release_request(struct kref *kref) for (which = 0; which < req->r_num_ops; which++) osd_req_op_data_release(req, which); + ceph_oid_destroy(&req->r_base_oid); + ceph_oid_destroy(&req->r_target_oid); ceph_put_snap_context(req->r_snapc); + if (req->r_mempool) mempool_free(req, req->r_osdc->req_mempool); else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) @@ -401,7 +404,9 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, INIT_LIST_HEAD(&req->r_req_lru_item); INIT_LIST_HEAD(&req->r_osd_item); + ceph_oid_init(&req->r_base_oid); req->r_base_oloc.pool = -1; + ceph_oid_init(&req->r_target_oid); req->r_target_oloc.pool = -1; dout("%s req %p\n", __func__, req); @@ -415,6 +420,8 @@ int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) struct ceph_msg *msg; int msg_size; + WARN_ON(ceph_oid_empty(&req->r_base_oid)); + /* create request message */ msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ @@ -859,10 +866,7 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, } req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); - - snprintf(req->r_base_oid.name, sizeof(req->r_base_oid.name), - "%llx.%08llx", vino.ino, objnum); - req->r_base_oid.name_len = strlen(req->r_base_oid.name); + ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); r = ceph_osdc_alloc_messages(req, GFP_NOFS); if (r) @@ -1410,7 +1414,7 @@ static int __calc_request_pg(struct ceph_osdmap *osdmap, req->r_target_oloc = req->r_base_oloc; /* struct */ need_check_tiering = true; } - if (req->r_target_oid.name_len == 0) { + if (ceph_oid_empty(&req->r_target_oid)) { ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); need_check_tiering = true; } @@ -2501,7 +2505,7 @@ void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, /* oid */ ceph_encode_32(&p, req->r_base_oid.name_len); memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); - dout("oid '%.*s' len %d\n", req->r_base_oid.name_len, + dout("oid %*pE len %d\n", req->r_base_oid.name_len, req->r_base_oid.name, req->r_base_oid.name_len); p += req->r_base_oid.name_len; diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c index 243574c8cf33..4668b871ca47 100644 --- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -1381,8 +1381,99 @@ bad: return ERR_PTR(err); } +void ceph_oid_copy(struct ceph_object_id *dest, + const struct ceph_object_id *src) +{ + WARN_ON(!ceph_oid_empty(dest)); + + if (src->name != src->inline_name) { + /* very rare, see ceph_object_id definition */ + dest->name = kmalloc(src->name_len + 1, + GFP_NOIO | __GFP_NOFAIL); + } + memcpy(dest->name, src->name, src->name_len + 1); + dest->name_len = src->name_len; +} +EXPORT_SYMBOL(ceph_oid_copy); +static __printf(2, 0) +int oid_printf_vargs(struct ceph_object_id *oid, const char *fmt, va_list ap) +{ + int len; + + WARN_ON(!ceph_oid_empty(oid)); + + len = vsnprintf(oid->inline_name, sizeof(oid->inline_name), fmt, ap); + if (len >= sizeof(oid->inline_name)) + return len; + + oid->name_len = len; + return 0; +} + +/* + * If oid doesn't fit into inline buffer, BUG. + */ +void ceph_oid_printf(struct ceph_object_id *oid, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + BUG_ON(oid_printf_vargs(oid, fmt, ap)); + va_end(ap); +} +EXPORT_SYMBOL(ceph_oid_printf); + +static __printf(3, 0) +int oid_aprintf_vargs(struct ceph_object_id *oid, gfp_t gfp, + const char *fmt, va_list ap) +{ + va_list aq; + int len; + + va_copy(aq, ap); + len = oid_printf_vargs(oid, fmt, aq); + va_end(aq); + + if (len) { + char *external_name; + + external_name = kmalloc(len + 1, gfp); + if (!external_name) + return -ENOMEM; + + oid->name = external_name; + WARN_ON(vsnprintf(oid->name, len + 1, fmt, ap) != len); + oid->name_len = len; + } + + return 0; +} + +/* + * If oid doesn't fit into inline buffer, allocate. + */ +int ceph_oid_aprintf(struct ceph_object_id *oid, gfp_t gfp, + const char *fmt, ...) +{ + va_list ap; + int ret; + + va_start(ap, fmt); + ret = oid_aprintf_vargs(oid, gfp, fmt, ap); + va_end(ap); + + return ret; +} +EXPORT_SYMBOL(ceph_oid_aprintf); + +void ceph_oid_destroy(struct ceph_object_id *oid) +{ + if (oid->name != oid->inline_name) + kfree(oid->name); +} +EXPORT_SYMBOL(ceph_oid_destroy); /* * calculate file layout from given offset, length. @@ -1474,7 +1565,7 @@ int ceph_oloc_oid_to_pg(struct ceph_osdmap *osdmap, pg_out->seed = ceph_str_hash(pi->object_hash, oid->name, oid->name_len); - dout("%s '%.*s' pgid %llu.%x\n", __func__, oid->name_len, oid->name, + dout("%s %*pE pgid %llu.%x\n", __func__, oid->name_len, oid->name, pg_out->pool, pg_out->seed); return 0; } |