iscsit: use GFP_ATOMIC under spin lock

commit 3c989d7603872bf878840f7ce3ea49b73bea4c6c upstream.

The function iscsit_build_conn_drop_async_message() is called
from iscsit_close_connection() with spin lock 'sess->conn_lock'
held, so we should use GFP_ATOMIC instead of GFP_KERNEL.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index ad202b3..486c5dd 100644 (file)
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -2359,7 +2359,7 @@ static void iscsit_build_conn_drop_async_message(struct iscsi_conn *conn)
        if (!conn_p)
                return;
 
-       cmd = iscsit_allocate_cmd(conn_p, GFP_KERNEL);
+       cmd = iscsit_allocate_cmd(conn_p, GFP_ATOMIC);
        if (!cmd) {
                iscsit_dec_conn_usage_count(conn_p);
                return;