ceph: put unused osd connections on lru
Instead of removing osd connection immediately when the
requests list is empty, put the osd connection on an lru.
Only if that osd has not been used for more than a specified
time, will it be removed.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/osd_client.h b/fs/ceph/osd_client.h
index 8d533d9..70f31b6 100644
--- a/fs/ceph/osd_client.h
+++ b/fs/ceph/osd_client.h
@@ -31,9 +31,11 @@
struct rb_node o_node;
struct ceph_connection o_con;
struct list_head o_requests;
+ struct list_head o_osd_lru;
struct ceph_authorizer *o_authorizer;
void *o_authorizer_buf, *o_authorizer_reply_buf;
size_t o_authorizer_buf_len, o_authorizer_reply_buf_len;
+ unsigned long lru_ttl;
};
/* an in-flight request */
@@ -90,11 +92,13 @@
struct mutex request_mutex;
struct rb_root osds; /* osds */
+ struct list_head osd_lru; /* idle osds */
u64 timeout_tid; /* tid of timeout triggering rq */
u64 last_tid; /* tid of last request */
struct rb_root requests; /* pending requests */
int num_requests;
struct delayed_work timeout_work;
+ struct delayed_work osds_timeout_work;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_file;
#endif