Date: Wed, 8 Mar 2017 12:18:58 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r314908 - head/sys/geom Message-ID: <201703081218.v28CIw0t030331@repo.freebsd.org>
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Author: mav Date: Wed Mar 8 12:18:58 2017 New Revision: 314908 URL: https://svnweb.freebsd.org/changeset/base/314908 Log: When chunking large DIOCGDELETE, do it on stripe edge. MFC after: 2 weeks Modified: head/sys/geom/geom_dev.c Modified: head/sys/geom/geom_dev.c ============================================================================== --- head/sys/geom/geom_dev.c Wed Mar 8 11:40:27 2017 (r314907) +++ head/sys/geom/geom_dev.c Wed Mar 8 12:18:58 2017 (r314908) @@ -468,7 +468,7 @@ g_dev_ioctl(struct cdev *dev, u_long cmd { struct g_consumer *cp; struct g_provider *pp; - off_t offset, length, chunk; + off_t offset, length, chunk, odd; int i, error; cp = dev->si_drv2; @@ -572,6 +572,13 @@ g_dev_ioctl(struct cdev *dev, u_long cmd g_dev_del_max_sectors * cp->provider->sectorsize) { chunk = g_dev_del_max_sectors * cp->provider->sectorsize; + if (cp->provider->stripesize > 0) { + odd = (offset + chunk + + cp->provider->stripeoffset) % + cp->provider->stripesize; + if (chunk > odd) + chunk -= odd; + } } error = g_delete_data(cp, offset, chunk); length -= chunk;
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