diff options
| author | xuejiufei <xuejiufei@huawei.com> | 2016-03-16 00:53:08 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-16 02:55:16 +0300 |
| commit | 60d663cb527340c87c6cb98842e90a43243e1607 (patch) | |
| tree | 759b66e37ff17a64cf23a15fc5efc53f96861567 /fs/ocfs2/dlm/dlmcommon.h | |
| parent | 39b29af03049421139656818f45b8ca7e12db3fa (diff) | |
| download | linux-60d663cb527340c87c6cb98842e90a43243e1607.tar.xz | |
ocfs2/dlm: add DEREF_DONE message
This series of patches is to fix the dis-order issue of setting/clearing
refmap bit described below.
Node 1 Node 2(master)
dlmlock
dlm_do_master_request
dlm_master_request_handler
-> dlm_lockres_set_refmap_bit
dlmlock succeed
dlmunlock succeed
dlm_purge_lockres
dlm_deref_handler
-> find lock resource is in
DLM_LOCK_RES_SETREF_INPROG state,
so dispatch a deref work
dlm_purge_lockres succeed.
call dlmlock again
dlm_do_master_request
dlm_master_request_handler
-> dlm_lockres_set_refmap_bit
deref work trigger, call
dlm_lockres_clear_refmap_bit
to clear Node 1 from refmap
dlm_purge_lockres succeed
dlm_send_remote_lock_request
return DLM_IVLOCKID because
the lockres is not exist
BUG if the lockres is $RECOVERY
This series of patches add a new message to keep the order of set and
clear. Other nodes can purge the lock resource only after the refmap bit
on master is cleared.
This patch is to add DEREF_DONE message and corresponding handler. Node
can purge the lock resource after receiving this message. As a new
message is added, so increase the minor number of dlm protocol version.
Signed-off-by: xuejiufei <xuejiufei@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/dlm/dlmcommon.h')
| -rw-r--r-- | fs/ocfs2/dlm/dlmcommon.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h index 62d932372585..c9f97da9231a 100644 --- a/fs/ocfs2/dlm/dlmcommon.h +++ b/fs/ocfs2/dlm/dlmcommon.h @@ -451,6 +451,7 @@ enum { DLM_QUERY_REGION = 519, DLM_QUERY_NODEINFO = 520, DLM_BEGIN_EXIT_DOMAIN_MSG = 521, + DLM_DEREF_LOCKRES_DONE = 522, }; struct dlm_reco_node_data @@ -782,6 +783,15 @@ struct dlm_deref_lockres u8 name[O2NM_MAX_NAME_LEN]; }; +struct dlm_deref_lockres_done { + u32 pad1; + u16 pad2; + u8 node_idx; + u8 namelen; + + u8 name[O2NM_MAX_NAME_LEN]; +}; + static inline enum dlm_status __dlm_lockres_state_to_status(struct dlm_lock_resource *res) { @@ -968,6 +978,8 @@ int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data, void dlm_assert_master_post_handler(int status, void *data, void *ret_data); int dlm_deref_lockres_handler(struct o2net_msg *msg, u32 len, void *data, void **ret_data); +int dlm_deref_lockres_done_handler(struct o2net_msg *msg, u32 len, void *data, + void **ret_data); int dlm_migrate_request_handler(struct o2net_msg *msg, u32 len, void *data, void **ret_data); int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data, |