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staging/lustre/ldlm: Hold lock when clearing flag

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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>
This commit is contained in:
Li Xi
2014-04-27 13:06:31 -04:00
committed by Greg Kroah-Hartman
parent b3d0dfe5ab
commit 88e4ff862d
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
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@@ -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++;
}