diff options
Diffstat (limited to 'fs/ceph/mds_client.h')
| -rw-r--r-- | fs/ceph/mds_client.h | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index d9936c4f1212..ab7e89f5e344 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -151,6 +151,7 @@ typedef void (*ceph_mds_request_callback_t) (struct ceph_mds_client *mdsc, struct ceph_mds_request { u64 r_tid; /* transaction id */ struct rb_node r_node; + struct ceph_mds_client *r_mdsc; int r_op; /* mds op code */ int r_mds; @@ -188,6 +189,7 @@ struct ceph_mds_request { int r_old_inode_drop, r_old_inode_unless; struct ceph_msg *r_request; /* original request */ + int r_request_release_offset; struct ceph_msg *r_reply; struct ceph_mds_reply_info_parsed r_reply_info; int r_err; @@ -206,8 +208,8 @@ struct ceph_mds_request { int r_attempts; /* resend attempts */ int r_num_fwd; /* number of forward attempts */ - int r_num_stale; int r_resend_mds; /* mds to resend to next, if any*/ + u32 r_sent_on_mseq; /* cap mseq request was sent at*/ struct kref r_kref; struct list_head r_wait; @@ -266,6 +268,27 @@ struct ceph_mds_client { spinlock_t cap_dirty_lock; /* protects above items */ wait_queue_head_t cap_flushing_wq; + /* + * Cap reservations + * + * Maintain a global pool of preallocated struct ceph_caps, referenced + * by struct ceph_caps_reservations. This ensures that we preallocate + * memory needed to successfully process an MDS response. (If an MDS + * sends us cap information and we fail to process it, we will have + * problems due to the client and MDS being out of sync.) + * + * Reservations are 'owned' by a ceph_cap_reservation context. + */ + spinlock_t caps_list_lock; + struct list_head caps_list; /* unused (reserved or + unreserved) */ + int caps_total_count; /* total caps allocated */ + int caps_use_count; /* in use */ + int caps_reserve_count; /* unused, reserved */ + int caps_avail_count; /* unused, unreserved */ + int caps_min_count; /* keep at least this many + (unreserved) */ + #ifdef CONFIG_DEBUG_FS struct dentry *debugfs_file; #endif @@ -322,6 +345,11 @@ static inline void ceph_mdsc_put_request(struct ceph_mds_request *req) kref_put(&req->r_kref, ceph_mdsc_release_request); } +extern int ceph_add_cap_releases(struct ceph_mds_client *mdsc, + struct ceph_mds_session *session); +extern void ceph_send_cap_releases(struct ceph_mds_client *mdsc, + struct ceph_mds_session *session); + extern void ceph_mdsc_pre_umount(struct ceph_mds_client *mdsc); extern char *ceph_mdsc_build_path(struct dentry *dentry, int *plen, u64 *base, @@ -336,4 +364,7 @@ extern void ceph_mdsc_lease_send_msg(struct ceph_mds_session *session, extern void ceph_mdsc_handle_map(struct ceph_mds_client *mdsc, struct ceph_msg *msg); +extern void ceph_mdsc_open_export_target_sessions(struct ceph_mds_client *mdsc, + struct ceph_mds_session *session); + #endif |