mtd: don't use PF_MEMALLOC

[safe/jmp/linux-2.6] / drivers / mtd / mtd_blkdevs.c

diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 50c76a2..fa83757 100644 (file)
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -89,19 +89,15 @@ static int mtd_blktrans_thread(void *arg)
 {
        struct mtd_blktrans_ops *tr = arg;
        struct request_queue *rq = tr->blkcore_priv->rq;
-
-       /* we might get involved when memory gets low, so use PF_MEMALLOC */
-       current->flags |= PF_MEMALLOC;
+       struct request *req = NULL;
 
        spin_lock_irq(rq->queue_lock);
+
        while (!kthread_should_stop()) {
-               struct request *req;
                struct mtd_blktrans_dev *dev;
                int res;
 
-               req = elv_next_request(rq);
-
-               if (!req) {
+               if (!req && !(req = blk_fetch_request(rq))) {
                        set_current_state(TASK_INTERRUPTIBLE);
                        spin_unlock_irq(rq->queue_lock);
                        schedule();
@@ -120,8 +116,13 @@ static int mtd_blktrans_thread(void *arg)
 
                spin_lock_irq(rq->queue_lock);
 
-               __blk_end_request_cur(req, res);
+               if (!__blk_end_request_cur(req, res))
+                       req = NULL;
        }
+
+       if (req)
+               __blk_end_request_all(req, -EIO);
+
        spin_unlock_irq(rq->queue_lock);
 
        return 0;
@@ -140,7 +141,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
        struct mtd_blktrans_ops *tr = dev->tr;
        int ret = -ENODEV;
 
-       if (!try_module_get(dev->mtd->owner))
+       if (!get_mtd_device(NULL, dev->mtd->index))
                goto out;
 
        if (!try_module_get(tr->owner))
@@ -154,7 +155,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
        ret = 0;
        if (tr->open && (ret = tr->open(dev))) {
                dev->mtd->usecount--;
-               module_put(dev->mtd->owner);
+               put_mtd_device(dev->mtd);
        out_tr:
                module_put(tr->owner);
        }
@@ -173,7 +174,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
 
        if (!ret) {
                dev->mtd->usecount--;
-               module_put(dev->mtd->owner);
+               put_mtd_device(dev->mtd);
                module_put(tr->owner);
        }
 
@@ -206,7 +207,7 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode,
        }
 }
 
-static struct block_device_operations mtd_blktrans_ops = {
+static const struct block_device_operations mtd_blktrans_ops = {
        .owner          = THIS_MODULE,
        .open           = blktrans_open,
        .release        = blktrans_release,
@@ -287,7 +288,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
        gd->private_data = new;
        new->blkcore_priv = gd;
        gd->queue = tr->blkcore_priv->rq;
-       gd->driverfs_dev = new->mtd->dev.parent;
+       gd->driverfs_dev = &new->mtd->dev;
 
        if (new->readonly)
                set_disk_ro(gd, 1);
@@ -374,7 +375,7 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
        }
 
        tr->blkcore_priv->rq->queuedata = tr;
-       blk_queue_hardsect_size(tr->blkcore_priv->rq, tr->blksize);
+       blk_queue_logical_block_size(tr->blkcore_priv->rq, tr->blksize);
        if (tr->discard)
                blk_queue_set_discard(tr->blkcore_priv->rq,
                                      blktrans_discard_request);
@@ -384,7 +385,7 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
        tr->blkcore_priv->thread = kthread_run(mtd_blktrans_thread, tr,
                        "%sd", tr->name);
        if (IS_ERR(tr->blkcore_priv->thread)) {
-               int ret = PTR_ERR(tr->blkcore_priv->thread);
+               ret = PTR_ERR(tr->blkcore_priv->thread);
                blk_cleanup_queue(tr->blkcore_priv->rq);
                unregister_blkdev(tr->major, tr->name);
                kfree(tr->blkcore_priv);