Date: Mon, 25 Jul 2005 10:03:16 +0000 (UTC) From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/geom/zero g_zero.c src/sys/modules/geom/geom_zero Makefile Message-ID: <200507251003.j6PA3Gr7003418@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
pjd 2005-07-25 10:03:16 UTC FreeBSD src repository Added files: sys/geom/zero g_zero.c sys/modules/geom/geom_zero Makefile Log: Add a very simple and small GEOM class - ZERO. It creates very huge provider (41PB) /dev/gzero. On BIO_READ request it zero-fills bio_data and on BIO_WRITE it does nothing. You can also set kern.geom.zero.clear sysctl to 0 to do nothing even for BIO_READ. I'm using it for performance testing where it is very helpful. MFC after: 3 days Revision Changes Path 1.1 +113 -0 src/sys/geom/zero/g_zero.c (new) 1.1 +8 -0 src/sys/modules/geom/geom_zero/Makefile (new)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200507251003.j6PA3Gr7003418>