Date: Wed, 23 Jan 2013 22:56:04 +0000 (UTC) From: Scott Long <scottl@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r245851 - stable/9/sys/geom Message-ID: <201301232256.r0NMu4OO085634@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: scottl Date: Wed Jan 23 22:56:03 2013 New Revision: 245851 URL: http://svnweb.freebsd.org/changeset/base/245851 Log: MFC r239132: Clone BIO_ORDERED flag, for disk drivers (namely CAM) that try to consume it. Modified: stable/9/sys/geom/geom_io.c Directory Properties: stable/9/sys/ (props changed) Modified: stable/9/sys/geom/geom_io.c ============================================================================== --- stable/9/sys/geom/geom_io.c Wed Jan 23 22:52:20 2013 (r245850) +++ stable/9/sys/geom/geom_io.c Wed Jan 23 22:56:03 2013 (r245851) @@ -177,6 +177,12 @@ g_clone_bio(struct bio *bp) if (bp2 != NULL) { bp2->bio_parent = bp; bp2->bio_cmd = bp->bio_cmd; + /* + * BIO_ORDERED flag may be used by disk drivers to enforce + * ordering restrictions, so this flag needs to be cloned. + * Other bio flags are not suitable for cloning. + */ + bp2->bio_flags = bp->bio_flags & BIO_ORDERED; bp2->bio_length = bp->bio_length; bp2->bio_offset = bp->bio_offset; bp2->bio_data = bp->bio_data;
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201301232256.r0NMu4OO085634>