Differential D14980 Diff 42955 sys/geom/stripe/g_stripe.c

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sys/geom/stripe/g_stripe.c

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#include <sys/kernel.h>		#include <sys/kernel.h>
#include <sys/module.h>		#include <sys/module.h>
#include <sys/lock.h>		#include <sys/lock.h>
#include <sys/mutex.h>		#include <sys/mutex.h>
#include <sys/bio.h>		#include <sys/bio.h>
#include <sys/sbuf.h>		#include <sys/sbuf.h>
#include <sys/sysctl.h>		#include <sys/sysctl.h>
#include <sys/malloc.h>		#include <sys/malloc.h>
		#include <sys/unistd.h>
#include <vm/uma.h>		#include <vm/uma.h>
#include <geom/geom.h>		#include <geom/geom.h>
#include <geom/stripe/g_stripe.h>		#include <geom/stripe/g_stripe.h>

FEATURE(geom_stripe, "GEOM striping support");		FEATURE(geom_stripe, "GEOM striping support");

static MALLOC_DEFINE(M_STRIPE, "stripe_data", "GEOM_STRIPE Data");		static MALLOC_DEFINE(M_STRIPE, "stripe_data", "GEOM_STRIPE Data");

▲ Show 20 Lines • Show All 514 Lines • ▼ Show 20 Lines	for (cbp = bioq_first(&queue); cbp != NULL; cbp = bioq_first(&queue)) {
G_STRIPE_LOGREQ(cbp, "Sending request.");		G_STRIPE_LOGREQ(cbp, "Sending request.");
cp = cbp->bio_caller2;		cp = cbp->bio_caller2;
cbp->bio_caller2 = NULL;		cbp->bio_caller2 = NULL;
g_io_request(cbp, cp);		g_io_request(cbp, cp);
}		}
}		}

static void		static void
		g_stripe_media(struct bio *bp)
		{
		struct g_stripe_softc *sc;
		struct bio *cbp;
		u_int no;

		atomic_set_long((long *)bp->bio_data, _PC_MEDIA_STRIPE);

		sc = bp->bio_to->geom->softc;
		for (no = 0; no < sc->sc_ndisks; no++) {
		cbp = g_clone_bio(bp);
		if (cbp == NULL) {
		g_io_deliver(bp, ENOMEM);
		return;
		}
		cbp->bio_done = g_std_done;
		g_io_request(cbp, sc->sc_disks[no]);
		}
		}

		static void
g_stripe_start(struct bio *bp)		g_stripe_start(struct bio *bp)
{		{
off_t offset, start, length, nstripe;		off_t offset, start, length, nstripe;
struct g_stripe_softc *sc;		struct g_stripe_softc *sc;
u_int no, stripesize;		u_int no, stripesize;
int error, fast = 0;		int error, fast = 0;

sc = bp->bio_to->geom->softc;		sc = bp->bio_to->geom->softc;
Show All 11 Lines	g_stripe_start(struct bio *bp)
case BIO_READ:		case BIO_READ:
case BIO_WRITE:		case BIO_WRITE:
case BIO_DELETE:		case BIO_DELETE:
break;		break;
case BIO_FLUSH:		case BIO_FLUSH:
g_stripe_flush(sc, bp);		g_stripe_flush(sc, bp);
return;		return;
case BIO_GETATTR:		case BIO_GETATTR:
		if (strcmp("GEOM::media", bp->bio_attribute) == 0) {
		g_stripe_media(bp);
		return;
		}
/* To which provider it should be delivered? */		/* To which provider it should be delivered? */
default:		default:
g_io_deliver(bp, EOPNOTSUPP);		g_io_deliver(bp, EOPNOTSUPP);
return;		return;
}		}

stripesize = sc->sc_stripesize;		stripesize = sc->sc_stripesize;

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