diff options
| author | Shyam Prasad N <sprasad@microsoft.com> | 2022-07-27 22:49:56 +0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2022-08-01 09:34:45 +0300 |
| commit | d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 (patch) | |
| tree | 2565cb830065b2c06cefd085866c3de926d688b5 /fs/cifs/cifsencrypt.c | |
| parent | 1bfa25ee30dfebe32a3b40c1a954052becbd7b8d (diff) | |
| download | linux-d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8.tar.xz | |
cifs: avoid use of global locks for high contention data
During analysis of multichannel perf, it was seen that
the global locks cifs_tcp_ses_lock and GlobalMid_Lock, which
were shared between various data structures were causing a
lot of contention points.
With this change, we're breaking down the use of these locks
by introducing new locks at more granular levels. i.e.
server->srv_lock, ses->ses_lock and tcon->tc_lock to protect
the unprotected fields of server, session and tcon structs;
and server->mid_lock to protect mid related lists and entries
at server level.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/cifsencrypt.c')
| -rw-r--r-- | fs/cifs/cifsencrypt.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index 663cb9db4908..8f7835ccbca1 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -141,13 +141,13 @@ int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server, if ((cifs_pdu == NULL) || (server == NULL)) return -EINVAL; - spin_lock(&cifs_tcp_ses_lock); + spin_lock(&server->srv_lock); if (!(cifs_pdu->Flags2 & SMBFLG2_SECURITY_SIGNATURE) || server->tcpStatus == CifsNeedNegotiate) { - spin_unlock(&cifs_tcp_ses_lock); + spin_unlock(&server->srv_lock); return rc; } - spin_unlock(&cifs_tcp_ses_lock); + spin_unlock(&server->srv_lock); if (!server->session_estab) { memcpy(cifs_pdu->Signature.SecuritySignature, "BSRSPYL", 8); |