diff options
author | Zhang Rui <rui.zhang@intel.com> | 2015-06-11 12:52:14 +0800 |
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committer | Zhang Rui <rui.zhang@intel.com> | 2015-06-11 12:52:14 +0800 |
commit | 111b23cf895b5cbcdc1b2c6580be1bb78a577d05 (patch) | |
tree | 89b840115ccd753216ba0b26e587e52699b99310 /fs/ocfs2/dlm/dlmmaster.c | |
parent | 6a6bcf08e5d1834447655a762dfaf552b675cc54 (diff) | |
parent | 53daf9383f34d7bf61358a37449fb4d59fbdafc2 (diff) |
Merge branches 'release' and 'thermal-soc' of .git into next
Diffstat (limited to 'fs/ocfs2/dlm/dlmmaster.c')
-rw-r--r-- | fs/ocfs2/dlm/dlmmaster.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c index a6944b25fd5b..fdf4b41d0609 100644 --- a/fs/ocfs2/dlm/dlmmaster.c +++ b/fs/ocfs2/dlm/dlmmaster.c @@ -757,6 +757,19 @@ lookup: if (tmpres) { spin_unlock(&dlm->spinlock); spin_lock(&tmpres->spinlock); + + /* + * Right after dlm spinlock was released, dlm_thread could have + * purged the lockres. Check if lockres got unhashed. If so + * start over. + */ + if (hlist_unhashed(&tmpres->hash_node)) { + spin_unlock(&tmpres->spinlock); + dlm_lockres_put(tmpres); + tmpres = NULL; + goto lookup; + } + /* Wait on the thread that is mastering the resource */ if (tmpres->owner == DLM_LOCK_RES_OWNER_UNKNOWN) { __dlm_wait_on_lockres(tmpres); |