don't make susp_count negative.

diff --git a/servers/vfs/pipe.c b/servers/vfs/pipe.c
index 82ece30f12c9ad328eceab6e1e7986db0f82373f..4e3e4dac7d1d6d5f0d7405a62d34af20bb4f7308 100644 (file)
--- a/servers/vfs/pipe.c
+++ b/servers/vfs/pipe.c
@@ -352,13 +352,15 @@ int count;                        /* max number of processes to release */
   }
 
   /* Search the proc table. */
-  for (rp = &fproc[0]; rp < &fproc[NR_PROCS]; rp++) {
+  for (rp = &fproc[0]; rp < &fproc[NR_PROCS] && count > 0; rp++) {
        if (rp->fp_pid != PID_FREE && rp->fp_suspended == SUSPENDED &&
                        rp->fp_revived == NOT_REVIVING &&
                        (rp->fp_fd & BYTE) == call_nr &&
                        rp->fp_filp[rp->fp_fd>>8]->filp_vno == vp) {
                revive(rp->fp_endpoint, 0);
                susp_count--;   /* keep track of who is suspended */
+               if(susp_count < 0)
+                       panic("vfs", "susp_count now negative", susp_count);
                if (--count == 0) return;
        }
   }