From: jcl Date: Mon, 22 Jul 2013 16:06:33 +0000 (+0800) Subject: staging/lustre/mdc: layout lock rpc must not take rpc_lock X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bdf43213f9e7faf980025f44ec82b80caf453e8d;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git staging/lustre/mdc: layout lock rpc must not take rpc_lock When a client issue an RPC to get a layout lock, it must not hold rpc_lock because in case of a restore the rpc can be blocking for a long time Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3200 Lustre-change: http://review.whamcloud.com/6115 Signed-off-by: JC Lafoucriere Reviewed-by: Jinshan Xiong Reviewed-by: Johann Lombardi Signed-off-by: Peng Tao Signed-off-by: Andreas Dilger Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/lustre/lustre/include/lustre_mdc.h b/drivers/staging/lustre/lustre/include/lustre_mdc.h index fb1561a809b9..82d1f2f13031 100644 --- a/drivers/staging/lustre/lustre/include/lustre_mdc.h +++ b/drivers/staging/lustre/lustre/include/lustre_mdc.h @@ -86,7 +86,8 @@ static inline void mdc_get_rpc_lock(struct mdc_rpc_lock *lck, { ENTRY; - if (it != NULL && (it->it_op == IT_GETATTR || it->it_op == IT_LOOKUP)) + if (it != NULL && (it->it_op == IT_GETATTR || it->it_op == IT_LOOKUP || + it->it_op == IT_LAYOUT)) return; /* This would normally block until the existing request finishes. @@ -123,7 +124,8 @@ static inline void mdc_get_rpc_lock(struct mdc_rpc_lock *lck, static inline void mdc_put_rpc_lock(struct mdc_rpc_lock *lck, struct lookup_intent *it) { - if (it != NULL && (it->it_op == IT_GETATTR || it->it_op == IT_LOOKUP)) + if (it != NULL && (it->it_op == IT_GETATTR || it->it_op == IT_LOOKUP || + it->it_op == IT_LAYOUT)) goto out; if (lck->rpcl_it == MDC_FAKE_RPCL_IT) { /* OBD_FAIL_MDC_RPCS_SEM */ diff --git a/drivers/staging/lustre/lustre/mdc/mdc_locks.c b/drivers/staging/lustre/lustre/mdc/mdc_locks.c index bae2d67e7fa4..9532134e16c6 100644 --- a/drivers/staging/lustre/lustre/mdc/mdc_locks.c +++ b/drivers/staging/lustre/lustre/mdc/mdc_locks.c @@ -884,7 +884,7 @@ static int mdc_finish_intent_lock(struct obd_export *exp, struct mdt_body *mdt_body; struct ldlm_lock *lock; int rc; - + ENTRY; LASSERT(request != NULL); LASSERT(request != LP_POISON);