[src/trunk]: src/sys/dev/iscsi Keep 1 CCB free for private use. This avoids f...

[mlelstv <mlelstv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/647e997880af
branches:  trunk
changeset: 345691:647e997880af
user:      mlelstv <mlelstv%NetBSD.org@localhost>
date:      Sun Jun 05 05:29:01 2016 +0000

description:
Keep 1 CCB free for private use. This avoids frequent recovery in scsipi when
resources appear to be exhausted.

diffstat:

 sys/dev/iscsi/iscsi_main.c |  4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diffs (14 lines):

diff -r 6400213ba81d -r 647e997880af sys/dev/iscsi/iscsi_main.c
--- a/sys/dev/iscsi/iscsi_main.c        Sun Jun 05 05:25:59 2016 +0000
+++ b/sys/dev/iscsi/iscsi_main.c        Sun Jun 05 05:29:01 2016 +0000
@@ -355,8 +355,8 @@
        adapt->adapt_nchannels = 1;
        adapt->adapt_request = iscsi_scsipi_request;
        adapt->adapt_minphys = iscsi_minphys;
-       adapt->adapt_openings = CCBS_PER_SESSION;
-       adapt->adapt_max_periph = CCBS_PER_SESSION;
+       adapt->adapt_openings = CCBS_PER_SESSION - 1;
+       adapt->adapt_max_periph = CCBS_PER_SESSION - 1;
 
        /*
         * Fill in the scsipi_channel.