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authorDavid Teigland <teigland@redhat.com>2012-08-02 20:08:21 +0400
committerDavid Teigland <teigland@redhat.com>2012-08-08 20:33:49 +0400
commit475f230c6072fb2186f48b23943afcd0ee3a8343 (patch)
tree42c7979e644138ed93f30f2cd8cf2c33bb849078 /fs/dlm/member.c
parent6ad2291624824c1de19dbbbbb6d4f9f601b60781 (diff)
downloadlinux-475f230c6072fb2186f48b23943afcd0ee3a8343.tar.xz
dlm: fix unlock balance warnings
The in_recovery rw_semaphore has always been acquired and released by different threads by design. To work around the "BUG: bad unlock balance detected!" messages, adjust things so the dlm_recoverd thread always does both down_write and up_write. Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/dlm/member.c')
-rw-r--r--fs/dlm/member.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index 862640a36d5c..476557b54921 100644
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -616,13 +616,13 @@ int dlm_ls_stop(struct dlm_ls *ls)
down_write(&ls->ls_recv_active);
/*
- * Abort any recovery that's in progress (see RECOVERY_STOP,
+ * Abort any recovery that's in progress (see RECOVER_STOP,
* dlm_recovery_stopped()) and tell any other threads running in the
* dlm to quit any processing (see RUNNING, dlm_locking_stopped()).
*/
spin_lock(&ls->ls_recover_lock);
- set_bit(LSFL_RECOVERY_STOP, &ls->ls_flags);
+ set_bit(LSFL_RECOVER_STOP, &ls->ls_flags);
new = test_and_clear_bit(LSFL_RUNNING, &ls->ls_flags);
ls->ls_recover_seq++;
spin_unlock(&ls->ls_recover_lock);
@@ -642,12 +642,16 @@ int dlm_ls_stop(struct dlm_ls *ls)
* when recovery is complete.
*/
- if (new)
- down_write(&ls->ls_in_recovery);
+ if (new) {
+ set_bit(LSFL_RECOVER_DOWN, &ls->ls_flags);
+ wake_up_process(ls->ls_recoverd_task);
+ wait_event(ls->ls_recover_lock_wait,
+ test_bit(LSFL_RECOVER_LOCK, &ls->ls_flags));
+ }
/*
* The recoverd suspend/resume makes sure that dlm_recoverd (if
- * running) has noticed RECOVERY_STOP above and quit processing the
+ * running) has noticed RECOVER_STOP above and quit processing the
* previous recovery.
*/
@@ -709,7 +713,8 @@ int dlm_ls_start(struct dlm_ls *ls)
kfree(rv_old);
}
- dlm_recoverd_kick(ls);
+ set_bit(LSFL_RECOVER_WORK, &ls->ls_flags);
+ wake_up_process(ls->ls_recoverd_task);
return 0;
fail: