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Commit b227d215 authored by Ronnie Sahlberg's avatar Ronnie Sahlberg Committed by Steve French
Browse files

cifs: wait_for_free_credits() make it possible to wait for >=1 credits 



Change wait_for_free_credits() to allow waiting for >=1 credits instead of just
a single credit.

Signed-off-by: default avatarRonnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
Reviewed-by: default avatarPavel Shilovsky <pshilov@microsoft.com>
parent 4230cff8

fs/cifs/cifsglob.h

+2 −2
Original line number Diff line number Diff line
@@ -735,13 +735,13 @@ in_flight(struct TCP_Server_Info *server) 
}



static inline bool

has_credits(struct TCP_Server_Info *server, int *credits)

has_credits(struct TCP_Server_Info *server, int *credits, int num_credits)

{

	int num;

	spin_lock(&server->req_lock);

	num = *credits;

	spin_unlock(&server->req_lock);

	return num > 0;

	return num >= num_credits;

}



static inline void

fs/cifs/smb2ops.c

+1 −1
Original line number Diff line number Diff line
@@ -185,7 +185,7 @@ smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size, 
			spin_unlock(&server->req_lock);

			cifs_num_waiters_inc(server);

			rc = wait_event_killable(server->request_q,

					has_credits(server, &server->credits));

				has_credits(server, &server->credits, 1));

			cifs_num_waiters_dec(server);

			if (rc)

				return rc;

fs/cifs/transport.c

+7 −7
Original line number Diff line number Diff line
@@ -486,8 +486,8 @@ smb_send(struct TCP_Server_Info *server, struct smb_hdr *smb_buffer, 
}



static int

wait_for_free_credits(struct TCP_Server_Info *server, const int flags,

		      unsigned int *instance)

wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits,

		      const int flags, unsigned int *instance)

{

	int rc;

	int *credits;
@@ -513,11 +513,11 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int flags, 
	}



	while (1) {

		if (*credits <= 0) {

		if (*credits < num_credits) {

			spin_unlock(&server->req_lock);

			cifs_num_waiters_inc(server);

			rc = wait_event_killable(server->request_q,

						 has_credits(server, credits));

				has_credits(server, credits, num_credits));

			cifs_num_waiters_dec(server);

			if (rc)

				return rc;
@@ -535,8 +535,8 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int flags, 


			/* update # of requests on the wire to server */

			if ((flags & CIFS_TIMEOUT_MASK) != CIFS_BLOCKING_OP) {

				*credits -= 1;

				server->in_flight++;

				*credits -= num_credits;

				server->in_flight += num_credits;

				*instance = server->reconnect_instance;

			}

			spin_unlock(&server->req_lock);
@@ -550,7 +550,7 @@ static int 
wait_for_free_request(struct TCP_Server_Info *server, const int flags,

		      unsigned int *instance)

{

	return wait_for_free_credits(server, flags, instance);

	return wait_for_free_credits(server, 1, flags, instance);

}



int