From a17626eea22dd2452955412b41946ffe0a7b8479 Mon Sep 17 00:00:00 2001
From: Federico Vaga <federico.vaga@gmail.com>
Date: Fri, 27 Jan 2012 02:59:15 +0100
Subject: [PATCH] zstat->cset_list: lock operations on this list
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>
Acked-by: Alessandro Rubini <rubini@gnudd.com>
---
zio-sys.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/zio-sys.c b/zio-sys.c
index a8494be..e0deaec 100644
--- a/zio-sys.c
+++ b/zio-sys.c
@@ -1433,9 +1433,9 @@ static int cset_register(struct zio_cset *cset)
goto out_tr;
cset->trig = trig;
}
-
+ spin_lock(&zstat->lock);
list_add(&cset->list_cset, &zstat->list_cset);
-
+ spin_unlock(&zstat->lock);
/* Private initialization function */
if (cset->init) {
err = cset->init(cset);
@@ -1479,7 +1479,9 @@ static void cset_unregister(struct zio_cset *cset)
cset->exit(cset);
/* Remove from csets list*/
+ spin_lock(&zstat->lock);
list_del(&cset->list_cset);
+ spin_unlock(&zstat->lock);
/* destroy instance and decrement trigger usage */
__ti_unregister(cset->trig, cset->ti);
__ti_destroy(cset->trig, cset->ti);
--
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