commit - 9cb6f43045e64e6dcbe1fa5ccd4848838ba76178
commit + 94235a8b4bdd20766b41302fa21a31df660b078b
blob - a42af96bb807cf21df910ef1e0ed550e9fe27970
blob + 9714ef6044f474fef26d37756bdde8c885217638
--- src/libfs/fs.c
+++ src/libfs/fs.c
@@ -39,6 +39,8 @@ fsinit(int fd)
 	fs->mux.recv = _fsrecv;
 	fs->mux.gettag = _fsgettag;
 	fs->mux.settag = _fssettag;
+	fs->iorecv = ioproc();
+	fs->iosend = ioproc();
 	muxinit(&fs->mux);
 	return fs;
 }
@@ -105,6 +107,8 @@ _fsdecref(Fsys *fs)
 			next = f->next;
 			free(f);
 		}
+		closeioproc(fs->iorecv);
+		closeioproc(fs->iosend);
 		free(fs);
 		return;
 	}
@@ -267,7 +271,7 @@ _fssend(Mux *mux, void *pkt)
 	Fsys *fs;
 
 	fs = mux->aux;
-	return threadwrite(fs->fd, pkt, GBIT32((uchar*)pkt));
+	return iowrite(fs->iosend, fs->fd, pkt, GBIT32((uchar*)pkt));
 }
 
 static void*
@@ -279,7 +283,7 @@ _fsrecv(Mux *mux)
 	Fsys *fs;
 
 	fs = mux->aux;
-	n = threadreadn(fs->fd, buf, 4);
+	n = ioreadn(fs->iorecv, fs->fd, buf, 4);
 	if(n != 4)
 		return nil;
 	n = GBIT32(buf);
@@ -289,12 +293,12 @@ _fsrecv(Mux *mux)
 		return nil;
 	}
 	PBIT32(pkt, n);
-	if(threadreadn(fs->fd, pkt+4, n-4) != n-4){
+	if(ioreadn(fs->iorecv, fs->fd, pkt+4, n-4) != n-4){
 		free(pkt);
 		return nil;
 	}
 	if(pkt[4] == Ropenfd){
-		if((nfd=threadrecvfd(fs->fd)) < 0){
+		if((nfd=iorecvfd(fs->iorecv, fs->fd)) < 0){
 			fprint(2, "recv fd error: %r\n");
 			free(pkt);
 			return nil;
blob - fbcc37771b5ea281353c117d6b0ab37c36184f5b
blob + 59cecaa5c025b3b6fb4caa6ae42f11b662c14e06
--- src/libfs/fsimpl.h
+++ src/libfs/fsimpl.h
@@ -1,6 +1,8 @@
 /* Copyright (C) 2003 Russ Cox, Massachusetts Institute of Technology */
 /* See COPYRIGHT */
 
+#include <thread.h>
+
 typedef struct Queue Queue;
 Queue *_fsqalloc(void);
 int _fsqsend(Queue*, void*);
@@ -22,6 +24,8 @@ struct Fsys
 	Queue *rxq;
 	Fid *freefid;
 	int nextfid;
+	Ioproc *iorecv;
+	Ioproc *iosend;
 };
 
 struct Fid