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Go Back   Linux Archive > Redhat > Cluster Development

 
 
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Old 01-21-2008, 09:25 PM
David Teigland
 
Default dlm: clear ast_type when removing from astqueue

The lkb_ast_type field indicates whether the lkb is on the astqueue list.
When clearing locks for a process, lkb's were being removed from the astqueue
list without clearing the field. If release_lockspace then happened
immediately afterward, it could try to remove the lkb from the list a second
time.

Appears when process calls libdlm dlm_release_lockspace() which first
closes the ls dev triggering clear_proc_locks, and then removes the ls
(a write to control dev) causing release_lockspace().

Signed-off-by: David Teigland <teigland@redhat.com>
---
fs/dlm/lock.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index ddb4628..43ca2a3 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -4678,6 +4678,7 @@ void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc)
}

list_for_each_entry_safe(lkb, safe, &proc->asts, lkb_astqueue) {
+ lkb->lkb_ast_type = 0;
list_del(&lkb->lkb_astqueue);
dlm_put_lkb(lkb);
}
--
1.5.3.3
 

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