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authorDavid Teigland <teigland@redhat.com>2006-05-02 13:34:03 -0400
committerSteven Whitehouse <swhiteho@redhat.com>2006-05-02 13:34:03 -0400
commit97a35d1e5fab9ff8de27814082b78b2fc9ad94f0 (patch)
tree551025da17641ccc4df7378da2bb94cedfb2482e /fs/dlm/dlm_internal.h
parentd2d7b8a2a756fb520792ca3db3abdeed9214ae5b (diff)
downloadop-kernel-dev-97a35d1e5fab9ff8de27814082b78b2fc9ad94f0.zip
op-kernel-dev-97a35d1e5fab9ff8de27814082b78b2fc9ad94f0.tar.gz
[DLM] fix grant_after_purge softlockup
In dlm_grant_after_purge() we were holding a hash table read_lock while calling put_rsb() which potentially removes the rsb from the hash table, taking the same lock in write. Fix this by flagging rsb's ahead of time that have been purged. Then iteratively read_lock the hash table, find a flagged rsb, unlock, process rsb. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/dlm/dlm_internal.h')
-rw-r--r--fs/dlm/dlm_internal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index c329902..149106f 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -280,6 +280,7 @@ enum rsb_flags {
RSB_NEW_MASTER,
RSB_NEW_MASTER2,
RSB_RECOVER_CONVERT,
+ RSB_LOCKS_PURGED,
};
static inline void rsb_set_flag(struct dlm_rsb *r, enum rsb_flags flag)
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