diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2015-05-12 10:13:41 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-05-12 10:13:41 +0200 |
| commit | 8becdc18c3e1f855cae5af266f6a1f5ce5af24fb (patch) | |
| tree | c42e2d4274b1aa17a7822385535ac8524e4a6822 /fs/ocfs2/dlm | |
| parent | 3c1b5c9bd991d1c023f736b0187582aae8a5b30a (diff) | |
| parent | 030bbdbf4c833bc69f502eae58498bc5572db736 (diff) | |
Merge tag 'v4.1-rc3' into devel
Linux 4.1-rc3
Diffstat (limited to 'fs/ocfs2/dlm')
| -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); |