Set a low water mark on scsi_xfer_pool and prime the pool. This way there

will always be some scsi_xfer structures around.  Hopefully that means the
pagedaemon can actually write out pages to swap if we're out of physical
memory.

ok krw@

diff --git a/sys/scsi/scsi_base.c b/sys/scsi/scsi_base.c
index 559df94..110b496 100644 (file)
--- a/sys/scsi/scsi_base.c
+++ b/sys/scsi/scsi_base.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: scsi_base.c,v 1.282 2023/07/06 10:17:43 visa Exp $    */
+/*     $OpenBSD: scsi_base.c,v 1.283 2023/08/02 19:58:52 kettenis Exp $        */
 /*     $NetBSD: scsi_base.c,v 1.43 1997/04/02 02:29:36 mycroft Exp $   */
 
 /*
@@ -138,6 +138,8 @@ scsi_init(void)
        /* Initialize the scsi_xfer pool. */
        pool_init(&scsi_xfer_pool, sizeof(struct scsi_xfer), 0, IPL_BIO, 0,
            "scxspl", NULL);
+       pool_setlowat(&scsi_xfer_pool, 8);
+       pool_prime(&scsi_xfer_pool, 8);
        pool_init(&scsi_plug_pool, sizeof(struct scsi_plug), 0, IPL_BIO, 0,
            "scsiplug", NULL);
 }