From 88e4ff862daa4d484de0462d1c95683ad627fe23 Mon Sep 17 00:00:00 2001 From: Li Xi <pkuelelixi@gmail.com> Date: Sun, 27 Apr 2014 13:06:31 -0400 Subject: [PATCH] staging/lustre/ldlm: Hold lock when clearing flag This patch moves lock's skip flag clearing from lru-delete to lru-add code to prevent clearing lock's flag without resource lock protection. Signed-off-by: Li Xi <lixi@ddn.com> Signed-off-by: Bobi Jam <bobijam.xu@intel.com> Reviewed-on: http://review.whamcloud.com/8772 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4269 Reviewed-by: Andreas Dilger <andreas.dilger@intel.com> Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com> Signed-off-by: Oleg Drokin <oleg.drokin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/staging/lustre/lustre/ldlm/ldlm_lock.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c index 0548aca45e8e..1066e00d541f 100644 --- a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c @@ -232,8 +232,6 @@ int ldlm_lock_remove_from_lru_nolock(struct ldlm_lock *lock) LASSERT(lock->l_resource->lr_type != LDLM_FLOCK); list_del_init(&lock->l_lru); - if (lock->l_flags & LDLM_FL_SKIPPED) - lock->l_flags &= ~LDLM_FL_SKIPPED; LASSERT(ns->ns_nr_unused > 0); ns->ns_nr_unused--; rc = 1; @@ -271,6 +269,8 @@ void ldlm_lock_add_to_lru_nolock(struct ldlm_lock *lock) LASSERT(list_empty(&lock->l_lru)); LASSERT(lock->l_resource->lr_type != LDLM_FLOCK); list_add_tail(&lock->l_lru, &ns->ns_unused_list); + if (lock->l_flags & LDLM_FL_SKIPPED) + lock->l_flags &= ~LDLM_FL_SKIPPED; LASSERT(ns->ns_nr_unused >= 0); ns->ns_nr_unused++; } -- 2.20.1