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Code Issues Releases Wiki Activity

cifs: do not duplicate fscache cookie for secondary channels 

We allocate index cookies for each connection from the client.
However, we don't need this index for each channel in case of
multichannel. So making sure that we avoid creating duplicate
cookies by instantiating only for primary channel.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Shyam Prasad N 2021-07-19 13:59:14 +00:00 committed by Steve French
parent 0f2b305af9
commit 46bb1b9484
1 changed files with 7 additions and 2 deletions
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9
fs/cifs/connect.c
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@ -1397,7 +1397,10 @@ cifs_put_tcp_session(struct TCP_Server_Info *server, int from_reconnect)
spin_unlock(&GlobalMid_Lock);
cifs_crypto_secmech_release(server);
cifs_fscache_release_client_cookie(server);
/* fscache server cookies are based on primary channel only */
if (!CIFS_SERVER_IS_CHAN(server))
cifs_fscache_release_client_cookie(server);
kfree(server->session_key.response);
server->session_key.response = NULL;
@ -1553,7 +1556,9 @@ smbd_connected:
list_add(&tcp_ses->tcp_ses_list, &cifs_tcp_ses_list);
spin_unlock(&cifs_tcp_ses_lock);
cifs_fscache_get_client_cookie(tcp_ses);
/* fscache server cookies are based on primary channel only */
if (!CIFS_SERVER_IS_CHAN(tcp_ses))
cifs_fscache_get_client_cookie(tcp_ses);
/* queue echo request delayed work */
queue_delayed_work(cifsiod_wq, &tcp_ses->echo, tcp_ses->echo_interval);