From 44cc49ddca95c130f4e165e0f567a6d339d3bf18 Mon Sep 17 00:00:00 2001
From: zam <zam>
Date: Tue, 2 Dec 2008 19:51:31 +0000
Subject: [PATCH] Branch HEAD b=17742 i=h.huang i=alexey.lyashkov
Add necessary spin-lock protection to dump_exports().
---
lustre/obdclass/obd_config.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/lustre/obdclass/obd_config.c b/lustre/obdclass/obd_config.c
index f0c7f9fbd0..36cb74ceae 100644
--- a/lustre/obdclass/obd_config.c
+++ b/lustre/obdclass/obd_config.c
@@ -448,19 +448,22 @@ int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
static void dump_exports(struct obd_device *obd)
{
- struct obd_export *exp, *n;
+ struct obd_export *exp;
- list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
+ spin_lock(&obd->obd_dev_lock);
+ list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
struct ptlrpc_reply_state *rs;
struct ptlrpc_reply_state *first_reply = NULL;
int nreplies = 0;
+ spin_lock(&exp->exp_lock);
list_for_each_entry (rs, &exp->exp_outstanding_replies,
rs_exp_list) {
if (nreplies == 0)
first_reply = rs;
nreplies++;
}
+ spin_unlock(&exp->exp_lock);
CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
obd->obd_name, exp, exp->exp_client_uuid.uuid,
@@ -469,6 +472,7 @@ static void dump_exports(struct obd_device *obd)
exp->exp_failed, nreplies, first_reply,
nreplies > 3 ? "..." : "");
}
+ spin_unlock(&obd->obd_dev_lock);
}
int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
--
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