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| author | David S. Miller <davem@davemloft.net> | 2010-08-16 21:09:34 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-08-16 21:09:34 (GMT) |
| commit | 300a103d1504134f8c4a7e831f995e917ea9b1e4 (patch) | |
| tree | 7f94d5fff513d132bd0b57a9e3bd96c4cc80d707 /fs/ceph/mds_client.h | |
| parent | 0a492896ac07336c98f37ad7fab4a6387b6ada78 (diff) | |
| parent | da5cabf80e2433131bf0ed8993abc0f7ea618c73 (diff) | |
| download | linux-300a103d1504134f8c4a7e831f995e917ea9b1e4.tar.xz | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'fs/ceph/mds_client.h')
| -rw-r--r-- | fs/ceph/mds_client.h | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index 952410c..ab7e89f 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; @@ -207,8 +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; @@ -267,6 +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 @@ -324,8 +346,7 @@ static inline void ceph_mdsc_put_request(struct ceph_mds_request *req) } extern int ceph_add_cap_releases(struct ceph_mds_client *mdsc, - struct ceph_mds_session *session, - int extra); + struct ceph_mds_session *session); extern void ceph_send_cap_releases(struct ceph_mds_client *mdsc, struct ceph_mds_session *session); @@ -343,4 +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 |