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cifs: change wait_for_free_request() to take flags as argument

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and compute timeout and optyp from it.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
This commit is contained in:
Ronnie Sahlberg 2019-03-08 12:58:18 +10:00 committed by Steve French
parent f261c4e529
commit 480b1cb9da
1 changed files with 17 additions and 16 deletions
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33
fs/cifs/transport.c
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@ -538,15 +538,20 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int timeout,
}
static int
wait_for_free_request(struct TCP_Server_Info *server, const int timeout,
const int optype, unsigned int *instance)
wait_for_free_request(struct TCP_Server_Info *server, const int flags,
unsigned int *instance)
{
int *val;
int timeout, optype;
timeout = flags & CIFS_TIMEOUT_MASK;
optype = flags & CIFS_OP_MASK;
val = server->ops->get_credits_field(server, optype);
/* Since an echo is already inflight, no need to wait to send another */
if (*val <= 0 && optype == CIFS_ECHO_OP)
return -EAGAIN;
return wait_for_free_credits(server, timeout, val, instance);
}
@ -646,16 +651,16 @@ cifs_call_async(struct TCP_Server_Info *server, struct smb_rqst *rqst,
mid_handle_t *handle, void *cbdata, const int flags,
const struct cifs_credits *exist_credits)
{
int rc, timeout, optype;
int rc;
struct mid_q_entry *mid;
struct cifs_credits credits = { .value = 0, .instance = 0 };
unsigned int instance;
int optype;
timeout = flags & CIFS_TIMEOUT_MASK;
optype = flags & CIFS_OP_MASK;
if ((flags & CIFS_HAS_CREDITS) == 0) {
rc = wait_for_free_request(server, timeout, optype, &instance);
rc = wait_for_free_request(server, flags, &instance);
if (rc)
return rc;
credits.value = 1;
@ -871,8 +876,7 @@ compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
const int flags, const int num_rqst, struct smb_rqst *rqst,
int *resp_buf_type, struct kvec *resp_iov)
{
int i, j, rc = 0;
int timeout, optype;
int i, j, optype, rc = 0;
struct mid_q_entry *midQ[MAX_COMPOUND];
bool cancelled_mid[MAX_COMPOUND] = {false};
struct cifs_credits credits[MAX_COMPOUND] = {
@ -882,7 +886,6 @@ compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
unsigned int first_instance = 0;
char *buf;
timeout = flags & CIFS_TIMEOUT_MASK;
optype = flags & CIFS_OP_MASK;
for (i = 0; i < num_rqst; i++)
@ -933,8 +936,7 @@ compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
* Ensure we obtain 1 credit per request in the compound chain.
*/
for (i = 0; i < num_rqst; i++) {
rc = wait_for_free_request(ses->server, timeout, optype,
&instance);
rc = wait_for_free_request(ses->server, flags, &instance);
if (rc == 0) {
credits[i].value = 1;
@ -1057,7 +1059,7 @@ compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
smb311_update_preauth_hash(ses, rqst[0].rq_iov,
rqst[0].rq_nvec);
if (timeout == CIFS_ASYNC_OP)
if ((flags & CIFS_TIMEOUT_MASK) == CIFS_ASYNC_OP)
goto out;
for (i = 0; i < num_rqst; i++) {
@ -1194,7 +1196,7 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses,
int
SendReceive(const unsigned int xid, struct cifs_ses *ses,
struct smb_hdr *in_buf, struct smb_hdr *out_buf,
int *pbytes_returned, const int timeout)
int *pbytes_returned, const int flags)
{
int rc = 0;
struct mid_q_entry *midQ;
@ -1225,7 +1227,7 @@ SendReceive(const unsigned int xid, struct cifs_ses *ses,
return -EIO;
}
rc = wait_for_free_request(ses->server, timeout, 0, &credits.instance);
rc = wait_for_free_request(ses->server, flags, &credits.instance);
if (rc)
return rc;
@ -1264,7 +1266,7 @@ SendReceive(const unsigned int xid, struct cifs_ses *ses,
if (rc < 0)
goto out;
if (timeout == CIFS_ASYNC_OP)
if ((flags & CIFS_TIMEOUT_MASK) == CIFS_ASYNC_OP)
goto out;
rc = wait_for_response(ses->server, midQ);
@ -1367,8 +1369,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifs_tcon *tcon,
return -EIO;
}
rc = wait_for_free_request(ses->server, CIFS_BLOCKING_OP, 0,
&instance);
rc = wait_for_free_request(ses->server, CIFS_BLOCKING_OP, &instance);
if (rc)
return rc;