diff options
| -rw-r--r-- | fs/cifs/smb2ops.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 6dfb865ee9d7..96ca09d885a2 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -530,6 +530,14 @@ parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf, p = buf; spin_lock(&ses->iface_lock); + /* do not query too frequently, this time with lock held */ + if (ses->iface_last_update && + time_before(jiffies, ses->iface_last_update + + (SMB_INTERFACE_POLL_INTERVAL * HZ))) { + spin_unlock(&ses->iface_lock); + return 0; + } + /* * Go through iface_list and do kref_put to remove * any unused ifaces. ifaces in use will be removed @@ -696,6 +704,12 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_ struct network_interface_info_ioctl_rsp *out_buf = NULL; struct cifs_ses *ses = tcon->ses; + /* do not query too frequently */ + if (ses->iface_last_update && + time_before(jiffies, ses->iface_last_update + + (SMB_INTERFACE_POLL_INTERVAL * HZ))) + return 0; + rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, FSCTL_QUERY_NETWORK_INTERFACE_INFO, NULL /* no data input */, 0 /* no data input */, |