diff options
| -rw-r--r-- | fs/ocfs2/dlm/dlmcommon.h | 2 | ||||
| -rw-r--r-- | fs/ocfs2/dlm/dlmdomain.c | 3 | ||||
| -rw-r--r-- | fs/ocfs2/dlm/dlmmaster.c | 24 | ||||
| -rw-r--r-- | fs/ocfs2/dlm/dlmthread.c | 4 |
4 files changed, 29 insertions, 4 deletions
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h index 2df6fde3e652..3f554711efe5 100644 --- a/fs/ocfs2/dlm/dlmcommon.h +++ b/fs/ocfs2/dlm/dlmcommon.h @@ -224,6 +224,7 @@ static inline void __dlm_set_joining_node(struct dlm_ctxt *dlm, #define DLM_LOCK_RES_MIGRATING 0x00000020 #define DLM_LOCK_RES_DROPPING_REF 0x00000040 #define DLM_LOCK_RES_BLOCK_DIRTY 0x00001000 +#define DLM_LOCK_RES_SETREF_INPROG 0x00002000 /* max milliseconds to wait to sync up a network failure with a node death */ #define DLM_NODE_DEATH_WAIT_MAX (5 * 1000) @@ -879,6 +880,7 @@ int dlm_master_request_handler(struct o2net_msg *msg, u32 len, void *data, void **ret_data); int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data, void **ret_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_migrate_request_handler(struct o2net_msg *msg, u32 len, void *data, diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c index 8a208b06fdd7..6590e1bca23c 100644 --- a/fs/ocfs2/dlm/dlmdomain.c +++ b/fs/ocfs2/dlm/dlmdomain.c @@ -1101,7 +1101,8 @@ static int dlm_register_domain_handlers(struct dlm_ctxt *dlm) status = o2net_register_handler(DLM_ASSERT_MASTER_MSG, dlm->key, sizeof(struct dlm_assert_master), dlm_assert_master_handler, - dlm, NULL, &dlm->dlm_domain_handlers); + dlm, dlm_assert_master_post_handler, + &dlm->dlm_domain_handlers); if (status) goto bail; diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c index bd1268778b66..84f36db8ada3 100644 --- a/fs/ocfs2/dlm/dlmmaster.c +++ b/fs/ocfs2/dlm/dlmmaster.c @@ -2036,8 +2036,12 @@ ok: done: ret = 0; - if (res) - dlm_lockres_put(res); + if (res) { + spin_lock(&res->spinlock); + res->state |= DLM_LOCK_RES_SETREF_INPROG; + spin_unlock(&res->spinlock); + *ret_data = (void *)res; + } dlm_put(dlm); if (master_request) { mlog(0, "need to tell master to reassert\n"); @@ -2064,11 +2068,25 @@ kill: __dlm_print_one_lock_resource(res); spin_unlock(&res->spinlock); spin_unlock(&dlm->spinlock); - dlm_lockres_put(res); + *ret_data = (void *)res; dlm_put(dlm); return -EINVAL; } +void dlm_assert_master_post_handler(int status, void *data, void *ret_data) +{ + struct dlm_lock_resource *res = (struct dlm_lock_resource *)ret_data; + + if (ret_data) { + spin_lock(&res->spinlock); + res->state &= ~DLM_LOCK_RES_SETREF_INPROG; + spin_unlock(&res->spinlock); + wake_up(&res->wq); + dlm_lockres_put(res); + } + return; +} + int dlm_dispatch_assert_master(struct dlm_ctxt *dlm, struct dlm_lock_resource *res, int ignore_higher, u8 request_from, u32 flags) diff --git a/fs/ocfs2/dlm/dlmthread.c b/fs/ocfs2/dlm/dlmthread.c index 3b94e4dec351..8ffa0916eb86 100644 --- a/fs/ocfs2/dlm/dlmthread.c +++ b/fs/ocfs2/dlm/dlmthread.c @@ -176,6 +176,10 @@ static int dlm_purge_lockres(struct dlm_ctxt *dlm, res->lockname.name, master); if (!master) { + spin_lock(&res->spinlock); + /* This ensures that clear refmap is sent after the set */ + __dlm_wait_on_lockres_flags(res, DLM_LOCK_RES_SETREF_INPROG); + spin_unlock(&res->spinlock); /* drop spinlock to do messaging, retake below */ spin_unlock(&dlm->spinlock); /* clear our bit from the master's refmap, ignore errors */ |