Author: mav
Date: Wed Mar 22 07:54:29 2017
New Revision: 315705
URL: https://svnweb.freebsd.org/changeset/base/315705
Log:
MFC r314908: When chunking large DIOCGDELETE, do it on stripe edge.
Modified:
stable/10/sys/geom/geom_dev.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/geom/geom_dev.c
==============================================================================
--- stable/10/sys/geom/geom_dev.c Wed Mar 22 07:53:57 2017
(r315704)
+++ stable/10/sys/geom/geom_dev.c Wed Mar 22 07:54:29 2017
(r315705)
@@ -480,7 +480,7 @@ 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;
@@ -540,6 +540,13 @@ 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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