X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fblock%2Faoe%2Faoedev.c;fp=drivers%2Fblock%2Faoe%2Faoedev.c;h=ed4258a62df5a889028cf6f131d4276cf436a768;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=6e231c5a119958dd3549e5d825f4706f9d04f9ec;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c
index 6e231c5a1..ed4258a62 100644
--- a/drivers/block/aoe/aoedev.c
+++ b/drivers/block/aoe/aoedev.c
@@ -12,6 +12,24 @@
 static struct aoedev *devlist;
 static spinlock_t devlist_lock;
 
+int
+aoedev_isbusy(struct aoedev *d)
+{
+	struct frame *f, *e;
+
+	f = d->frames;
+	e = f + d->nframes;
+	do {
+		if (f->tag != FREETAG) {
+			printk(KERN_DEBUG "aoe: %ld.%ld isbusy\n",
+				d->aoemajor, d->aoeminor);
+			return 1;
+		}
+	} while (++f < e);
+
+	return 0;
+}
+
 struct aoedev *
 aoedev_by_aoeaddr(int maj, int min)
 {
@@ -28,6 +46,18 @@ aoedev_by_aoeaddr(int maj, int min)
 	return d;
 }
 
+static void
+dummy_timer(ulong vp)
+{
+	struct aoedev *d;
+
+	d = (struct aoedev *)vp;
+	if (d->flags & DEVFL_TKILL)
+		return;
+	d->timer.expires = jiffies + HZ;
+	add_timer(&d->timer);
+}
+
 /* called with devlist lock held */
 static struct aoedev *
 aoedev_newdev(ulong nframes)
@@ -35,7 +65,7 @@ aoedev_newdev(ulong nframes)
 	struct aoedev *d;
 	struct frame *f, *e;
 
-	d = kcalloc(1, sizeof *d, GFP_ATOMIC);
+	d = kzalloc(sizeof *d, GFP_ATOMIC);
 	if (d == NULL)
 		return NULL;
 	f = kcalloc(nframes, sizeof *f, GFP_ATOMIC);
@@ -44,6 +74,8 @@ aoedev_newdev(ulong nframes)
 		return NULL;
 	}
 
+	INIT_WORK(&d->work, aoecmd_sleepwork, d);
+
 	d->nframes = nframes;
 	d->frames = f;
 	e = f + nframes;
@@ -52,6 +84,10 @@ aoedev_newdev(ulong nframes)
 
 	spin_lock_init(&d->lock);
 	init_timer(&d->timer);
+	d->timer.data = (ulong) d;
+	d->timer.function = dummy_timer;
+	d->timer.expires = jiffies + HZ;
+	add_timer(&d->timer);
 	d->bufpool = NULL;	/* defer to aoeblk_gdalloc */
 	INIT_LIST_HEAD(&d->bufq);
 	d->next = devlist;
@@ -67,9 +103,6 @@ aoedev_downdev(struct aoedev *d)
 	struct buf *buf;
 	struct bio *bio;
 
-	d->flags |= DEVFL_TKILL;
-	del_timer(&d->timer);
-
 	f = d->frames;
 	e = f + d->nframes;
 	for (; f<e; f->tag = FREETAG, f->buf = NULL, f++) {
@@ -92,16 +125,15 @@ aoedev_downdev(struct aoedev *d)
 		bio_endio(bio, bio->bi_size, -EIO);
 	}
 
-	if (d->nopen)
-		d->flags |= DEVFL_CLOSEWAIT;
 	if (d->gd)
 		d->gd->capacity = 0;
 
-	d->flags &= ~DEVFL_UP;
+	d->flags &= ~(DEVFL_UP | DEVFL_PAUSE);
 }
 
+/* find it or malloc it */
 struct aoedev *
-aoedev_set(ulong sysminor, unsigned char *addr, struct net_device *ifp, ulong bufcnt)
+aoedev_by_sysminor_m(ulong sysminor, ulong bufcnt)
 {
 	struct aoedev *d;
 	ulong flags;
@@ -112,25 +144,19 @@ aoedev_set(ulong sysminor, unsigned char *addr, struct net_device *ifp, ulong bu
 		if (d->sysminor == sysminor)
 			break;
 
-	if (d == NULL && (d = aoedev_newdev(bufcnt)) == NULL) {
-		spin_unlock_irqrestore(&devlist_lock, flags);
-		printk(KERN_INFO "aoe: aoedev_set: aoedev_newdev failure.\n");
-		return NULL;
-	} /* if newdev, (d->flags & DEVFL_UP) == 0 for below */
-
-	spin_unlock_irqrestore(&devlist_lock, flags);
-	spin_lock_irqsave(&d->lock, flags);
-
-	d->ifp = ifp;
-	memcpy(d->addr, addr, sizeof d->addr);
-	if ((d->flags & DEVFL_UP) == 0) {
-		aoedev_downdev(d); /* flushes outstanding frames */
+	if (d == NULL) {
+		d = aoedev_newdev(bufcnt);
+	 	if (d == NULL) {
+			spin_unlock_irqrestore(&devlist_lock, flags);
+			printk(KERN_INFO "aoe: aoedev_set: aoedev_newdev failure.\n");
+			return NULL;
+		}
 		d->sysminor = sysminor;
 		d->aoemajor = AOEMAJOR(sysminor);
 		d->aoeminor = AOEMINOR(sysminor);
 	}
 
-	spin_unlock_irqrestore(&d->lock, flags);
+	spin_unlock_irqrestore(&devlist_lock, flags);
 	return d;
 }
 
@@ -161,6 +187,7 @@ aoedev_exit(void)
 
 		spin_lock_irqsave(&d->lock, flags);
 		aoedev_downdev(d);
+		d->flags |= DEVFL_TKILL;
 		spin_unlock_irqrestore(&d->lock, flags);
 
 		del_timer_sync(&d->timer);