svn commit: r314908 - head/sys/geom
Alexander Motin
mav at FreeBSD.org
Wed Mar 8 12:19:00 UTC 2017
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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