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ocfs2_dlm: wake up sleepers on the lockres waitqueue

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The dlm was not waking up threads waiting on the lockres wait queue,
waiting for the lockres to be no longer be in the DLM_LOCK_RES_IN_PROGRESS
and the DLM_LOCK_RES_MIGRATING states.

Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Kurt Hackel 2007-01-17 14:59:12 -08:00 committed by Mark Fasheh
parent 28b72d9c92
commit a6fa36402a
3 changed files with 18 additions and 2 deletions
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5
fs/ocfs2/dlm/dlmconvert.c
View File

@ -428,7 +428,7 @@ int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data)
struct dlm_lockstatus *lksb;
enum dlm_status status = DLM_NORMAL;
u32 flags;
int call_ast = 0, kick_thread = 0, ast_reserved = 0;
int call_ast = 0, kick_thread = 0, ast_reserved = 0, wake = 0;
if (!dlm_grab(dlm)) {
dlm_error(DLM_REJECTED);
@ -524,8 +524,11 @@ int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data)
cnv->requested_type,
&call_ast, &kick_thread);
res->state &= ~DLM_LOCK_RES_IN_PROGRESS;
wake = 1;
}
spin_unlock(&res->spinlock);
if (wake)
wake_up(&res->wq);
if (status != DLM_NORMAL) {
if (status != DLM_NOTQUEUED)

14
fs/ocfs2/dlm/dlmmaster.c
View File

@ -1967,6 +1967,7 @@ int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data)
spin_unlock(&mle->spinlock);
if (res) {
int wake = 0;
spin_lock(&res->spinlock);
if (mle->type == DLM_MLE_MIGRATION) {
mlog(0, "finishing off migration of lockres %.*s, "
@ -1974,6 +1975,7 @@ int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data)
res->lockname.len, res->lockname.name,
dlm->node_num, mle->new_master);
res->state &= ~DLM_LOCK_RES_MIGRATING;
wake = 1;
dlm_change_lockres_owner(dlm, res, mle->new_master);
BUG_ON(res->state & DLM_LOCK_RES_DIRTY);
} else {
@ -1981,6 +1983,8 @@ int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data)
}
spin_unlock(&res->spinlock);
have_lockres_ref = 1;
if (wake)
wake_up(&res->wq);
}
/* master is known, detach if not already detached.
@ -2342,7 +2346,7 @@ static int dlm_migrate_lockres(struct dlm_ctxt *dlm,
struct list_head *queue, *iter;
int i;
struct dlm_lock *lock;
int empty = 1;
int empty = 1, wake = 0;
if (!dlm_grab(dlm))
return -EINVAL;
@ -2467,6 +2471,7 @@ static int dlm_migrate_lockres(struct dlm_ctxt *dlm,
res->lockname.name, target);
spin_lock(&res->spinlock);
res->state &= ~DLM_LOCK_RES_MIGRATING;
wake = 1;
spin_unlock(&res->spinlock);
ret = -EINVAL;
}
@ -2525,6 +2530,7 @@ static int dlm_migrate_lockres(struct dlm_ctxt *dlm,
dlm_put_mle_inuse(mle);
spin_lock(&res->spinlock);
res->state &= ~DLM_LOCK_RES_MIGRATING;
wake = 1;
spin_unlock(&res->spinlock);
goto leave;
}
@ -2567,6 +2573,7 @@ static int dlm_migrate_lockres(struct dlm_ctxt *dlm,
dlm_put_mle_inuse(mle);
spin_lock(&res->spinlock);
res->state &= ~DLM_LOCK_RES_MIGRATING;
wake = 1;
spin_unlock(&res->spinlock);
goto leave;
}
@ -2595,6 +2602,11 @@ static int dlm_migrate_lockres(struct dlm_ctxt *dlm,
if (ret < 0)
dlm_kick_thread(dlm, res);
/* wake up waiters if the MIGRATING flag got set
* but migration failed */
if (wake)
wake_up(&res->wq);
/* TODO: cleanup */
if (mres)
free_page((unsigned long)mres);

1
fs/ocfs2/dlm/dlmrecovery.c
View File

@ -1420,6 +1420,7 @@ int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data)
spin_lock(&res->spinlock);
res->state &= ~DLM_LOCK_RES_IN_PROGRESS;
spin_unlock(&res->spinlock);
wake_up(&res->wq);
/* add an extra ref for just-allocated lockres
* otherwise the lockres will be purged immediately */