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authorDavid Teigland <teigland@redhat.com>2012-11-15 22:01:51 +0100
committerDavid Teigland <teigland@redhat.com>2012-11-16 18:20:42 +0100
commitda8c66638ae684c99abcb30e89d2803402e7ca20 (patch)
treee14974b7eb69db1d1c595892c94298a3f547ae23 /fs/dlm/dlm_internal.h
parentfs/dlm: remove CONFIG_EXPERIMENTAL (diff)
downloadlinux-da8c66638ae684c99abcb30e89d2803402e7ca20.tar.xz
linux-da8c66638ae684c99abcb30e89d2803402e7ca20.zip
dlm: fix lvb invalidation conditions
When a node is removed that held a PW/EX lock, the existing master node should invalidate the lvb on the resource due to the purged lock. Previously, the existing master node was invalidating the lvb if it found only NL/CR locks on the resource during recovery for the removed node. This could lead to cases where it invalidated the lvb and shouldn't have, or cases where it should have invalidated and didn't. When recovery selects a *new* master node for a resource, and that new master finds only NL/CR locks on the resource after lock recovery, it should invalidate the lvb. This case was handled correctly (but was incorrectly applied to the existing master case also.) When a process exits while holding a PW/EX lock, the lvb on the resource should be invalidated. This was not happening. The lvb contents and VALNOTVALID flag should be recovered before granting locks in recovery so that the recovered lvb state is provided in the callback. The lvb was being recovered after the lock was granted. Signed-off-by: David Teigland <teigland@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 871c1abf6029..77c0f70f8fe8 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -337,6 +337,7 @@ enum rsb_flags {
RSB_NEW_MASTER2,
RSB_RECOVER_CONVERT,
RSB_RECOVER_GRANT,
+ RSB_RECOVER_LVB_INVAL,
};
static inline void rsb_set_flag(struct dlm_rsb *r, enum rsb_flags flag)