[lustre-devel] [PATCH 140/622] lustre: class: use INIT_LIST_HEAD_RCU instead INIT_LIST_HEAD
James Simmons
jsimmons at infradead.org
Thu Feb 27 13:10:08 PST 2020
From: Yang Sheng <ys at whamcloud.com>
Use INIT_LIST_HEAD_RCU to avoid compiler optimization too much
in some case.
WC-bug-id: https://jira.whamcloud.com/browse/LU-11453
Lustre-commit: 68bc3984975b ("LU-11453 class: use INIT_LIST_HEAD_RCU instead INIT_LIST_HEAD")
Signed-off-by: Yang Sheng <ys at whamcloud.com>
Reviewed-on: https://review.whamcloud.com/33317
Reviewed-by: James Simmons <uja.ornl at yahoo.com>
Reviewed-by: Andreas Dilger <adilger at whamcloud.com>
Reviewed-by: John L. Hammond <jhammond at whamcloud.com>
Signed-off-by: James Simmons <jsimmons at infradead.org>
---
fs/lustre/obdclass/genops.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/lustre/obdclass/genops.c b/fs/lustre/obdclass/genops.c
index da53572..4465dd9 100644
--- a/fs/lustre/obdclass/genops.c
+++ b/fs/lustre/obdclass/genops.c
@@ -821,7 +821,7 @@ static struct obd_export *__class_new_export(struct obd_device *obd,
spin_lock_init(&export->exp_uncommitted_replies_lock);
INIT_LIST_HEAD(&export->exp_uncommitted_replies);
INIT_LIST_HEAD(&export->exp_req_replay_queue);
- INIT_LIST_HEAD(&export->exp_handle.h_link);
+ INIT_LIST_HEAD_RCU(&export->exp_handle.h_link);
INIT_LIST_HEAD(&export->exp_hp_rpcs);
class_handle_hash(&export->exp_handle, &export_handle_ops);
spin_lock_init(&export->exp_lock);
@@ -1018,7 +1018,7 @@ struct obd_import *class_new_import(struct obd_device *obd)
atomic_set(&imp->imp_replay_inflight, 0);
atomic_set(&imp->imp_inval_count, 0);
INIT_LIST_HEAD(&imp->imp_conn_list);
- INIT_LIST_HEAD(&imp->imp_handle.h_link);
+ INIT_LIST_HEAD_RCU(&imp->imp_handle.h_link);
class_handle_hash(&imp->imp_handle, &import_handle_ops);
init_imp_at(&imp->imp_at);
--
1.8.3.1
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