src/sys/geom/zero, branch releng/7.3 FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=releng%2F7.3 2006-02-01T12:06:01Z Remove trailing spaces. 2006-02-01T12:06:01Z Pawel Jakub Dawidek pjd@FreeBSD.org 2006-02-01T12:06:01Z urn:sha1:38ea96ac99d2a8e5c448028cb3c366a4cd5049dc Move $FreeBSD$ from comment to __FBSDID(). 2006-01-17T11:48:16Z Pawel Jakub Dawidek pjd@FreeBSD.org 2006-01-17T11:48:16Z urn:sha1:a1c10dcb4c58b6f8ea388bfd9448c1584e0cab4f - Allow to specify the byte which will be used for filling read buffer. 2005-12-08T23:06:59Z Pawel Jakub Dawidek pjd@FreeBSD.org 2005-12-08T23:06:59Z urn:sha1:24e1fdcd1a69eee6390b0cdfa7dfb00d78c5b7bd - Improve sysctl description a bit. Submitted by: Ivan Voras <ivoras@gmail.com> Add a very simple and small GEOM class - ZERO. 2005-07-25T10:03:16Z Pawel Jakub Dawidek pjd@FreeBSD.org 2005-07-25T10:03:16Z urn:sha1:565bc101112ce7a05881644d043e659408149e30 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