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When chunking large DIOCGDELETE, do it on stripe edge.

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MFC after:	2 weeks
This commit is contained in:
Alexander Motin 2017-03-08 12:18:58 +00:00
parent 72e80cddc0
commit 4d5832bc12
1 changed files with 8 additions and 1 deletions
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9
sys/geom/geom_dev.c
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@ -468,7 +468,7 @@ g_dev_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread
{
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, caddr_t data, int fflag, struct thread
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;