From 08fd034670b505c0ce1685404acaed0a4c073ef9 Mon Sep 17 00:00:00 2001 From: Jinshan Xiong Date: Sun, 18 Sep 2016 16:38:15 -0400 Subject: [PATCH] staging: lustre: ldlm: revert the changes for lock canceling policy The changes for LRU lock policy was introduced by commit bfae5a4e, where I was trying to revise the policy to pick locks for canceling. However, this caused two problems as mentioned in LU-5727. The first problem is that the lock can only be picked for canceling only if the number of LRU locks is over preset LRU number AND it's aged; the second problem is that mdc_cancel_weight() tends to not cancel OPEN locks, therefore open locks can be kept forever and finally exhausts memory on the MDT side. The commit 7b2d26b0 ("revert changes to ldlm_cancel_aged_policy") fixed the first problem. This patch will revert the rest of changes related to LRU policy revise. Signed-off-by: Jinshan Xiong Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5727 Reviewed-on: http://review.whamcloud.com/12733 Reviewed-by: Niu Yawei Reviewed-by: Bobi Jam Reviewed-by: Oleg Drokin Signed-off-by: James Simmons Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lustre/ldlm/ldlm_request.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c index 46842dd..582de52 100644 --- a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c @@ -1198,9 +1198,6 @@ static enum ldlm_policy_res ldlm_cancel_lrur_policy(struct ldlm_namespace *ns, if (slv == 0 || lv < slv) return LDLM_POLICY_KEEP_LOCK; - if (ns->ns_cancel && ns->ns_cancel(lock) == 0) - return LDLM_POLICY_KEEP_LOCK; - return LDLM_POLICY_CANCEL_LOCK; } @@ -1244,9 +1241,6 @@ static enum ldlm_policy_res ldlm_cancel_aged_policy(struct ldlm_namespace *ns, cfs_time_add(lock->l_last_used, ns->ns_max_age))) return LDLM_POLICY_KEEP_LOCK; - if (ns->ns_cancel && ns->ns_cancel(lock) == 0) - return LDLM_POLICY_KEEP_LOCK; - return LDLM_POLICY_CANCEL_LOCK; } -- 2.7.4