Author: mav
Date: Fri Nov 13 09:21:31 2015
New Revision: 290752
URL: https://svnweb.freebsd.org/changeset/base/290752
Log:
MFC r289305: 6293 ztest failure: error == 28 (0xc == 0x1c) in
ztest_tx_assign()
Reviewed by: George Wilson <george.wil...@delphix.com>
Reviewed by: Prakash Surya <prakash.su...@delphix.com>
Reviewed by: Richard Elling <richard.ell...@richardelling.com>
Approved by: Richard Lowe <richl...@richlowe.net>
Author: Matthew Ahrens <mahr...@delphix.com>
illumos/illumos-gate@8fe00bfb8790ad51653f67b01d5ac14256cbb404
Modified:
stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
==============================================================================
--- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Fri Nov
13 09:20:46 2015 (r290751)
+++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Fri Nov
13 09:21:31 2015 (r290752)
@@ -5298,6 +5298,16 @@ arc_init(void)
arc_c_max = arc_c_min;
arc_c_max = MAX(arc_c * 5, arc_c_max);
+ /*
+ * In userland, there's only the memory pressure that we artificially
+ * create (see arc_available_memory()). Don't let arc_c get too
+ * small, because it can cause transactions to be larger than
+ * arc_c, causing arc_tempreserve_space() to fail.
+ */
+#ifndef _KERNEL
+ arc_c_min = arc_c_max / 2;
+#endif
+
#ifdef _KERNEL
/*
* Allow the tunables to override our calculations if they are
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