staging: lustre: mdc: don't take rpc lock for readdir case

If the operation is IT_READDIR don't need to handle the
mdc RPC lock.

Signed-off-by: wang di <di.wang@intel.com>
Reviewed-on: http://review.whamcloud.com/10761
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4906
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lustre/include/lustre_mdc.h b/drivers/staging/lustre/lustre/include/lustre_mdc.h
index fa62b95..0a8c639 100644 (file)
--- a/drivers/staging/lustre/lustre/include/lustre_mdc.h
+++ b/drivers/staging/lustre/lustre/include/lustre_mdc.h
@@ -96,7 +96,7 @@ static inline void mdc_get_rpc_lock(struct mdc_rpc_lock *lck,
                                    struct lookup_intent *it)
 {
        if (it && (it->it_op == IT_GETATTR || it->it_op == IT_LOOKUP ||
-                  it->it_op == IT_LAYOUT))
+                  it->it_op == IT_LAYOUT || it->it_op == IT_READDIR))
                return;
 
        /* This would normally block until the existing request finishes.
@@ -136,7 +136,7 @@ static inline void mdc_put_rpc_lock(struct mdc_rpc_lock *lck,
                                    struct lookup_intent *it)
 {
        if (it && (it->it_op == IT_GETATTR || it->it_op == IT_LOOKUP ||
-                  it->it_op == IT_LAYOUT))
+                  it->it_op == IT_LAYOUT || it->it_op == IT_READDIR))
                return;
 
        if (lck->rpcl_it == MDC_FAKE_RPCL_IT) { /* OBD_FAIL_MDC_RPCS_SEM */