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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-05-14 22:31:23 (GMT) |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-05-14 22:31:23 (GMT) |
| commit | 4de5167ee07f7a9b66d999e40f2c3193d1a08add (patch) | |
| tree | 6458e3c033ace5f623046b92f90be9408db5deec /fs/ocfs2/dlm/dlmmaster.c | |
| parent | b9a5e5e18fbf223502c0b2264c15024e393da928 (diff) | |
| parent | ff284f37fc0e6f3b51ede85c5944d571b640ac0f (diff) | |
| download | linux-4de5167ee07f7a9b66d999e40f2c3193d1a08add.tar.xz | |
Merge branches 'acpi-init' and 'acpica'
* acpi-init:
ACPI / init: Fix the ordering of acpi_reserve_resources()
* acpica:
Revert "ACPICA: Permanently set _REV to the value '2'."
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 a6944b2..fdf4b41 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); |