diff options
| author | Shyam Prasad N <sprasad@microsoft.com> | 2021-07-19 17:05:53 +0000 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2022-01-07 20:07:07 -0600 |
| commit | 080dc5e5656c1cc1cdefb501b9b645a07519f763 (patch) | |
| tree | 417e32ff394a376212b5e5d2491564c9eb27c574 /fs/cifs/cifsencrypt.c | |
| parent | 183eea2ee5ba968ca7c31f04a0f01fd3e5c1d014 (diff) | |
cifs: take cifs_tcp_ses_lock for status checks
While checking/updating status for tcp ses, smb ses or tcon,
we take GlobalMid_Lock. This doesn't make any sense.
Replaced it with cifs_tcp_ses_lock.
Ideally, we should take a spin lock per struct.
But since tcp ses, smb ses and tcon objects won't add up to a lot,
I think there should not be too much contention.
Also, in few other places, these are checked without locking.
Added locking for these.
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, 5 insertions, 1 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index d118282071b3..0912d8bbbac1 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -141,9 +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); if (!(cifs_pdu->Flags2 & SMBFLG2_SECURITY_SIGNATURE) || - server->tcpStatus == CifsNeedNegotiate) + server->tcpStatus == CifsNeedNegotiate) { + spin_unlock(&cifs_tcp_ses_lock); return rc; + } + spin_unlock(&cifs_tcp_ses_lock); if (!server->session_estab) { memcpy(cifs_pdu->Signature.SecuritySignature, "BSRSPYL", 8); |