Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

[pandora-kernel.git] / fs / partitions / check.c

diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 137bf97..b81bfc0 100644 (file)
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -352,6 +352,7 @@ static void part_release(struct device *dev)
 {
        struct hd_struct *p = dev_to_part(dev);
        free_part_stats(p);
+       free_part_info(p);
        kfree(p);
 }
 
@@ -364,17 +365,25 @@ struct device_type part_type = {
 static void delete_partition_rcu_cb(struct rcu_head *head)
 {
        struct hd_struct *part = container_of(head, struct hd_struct, rcu_head);
+       struct gendisk *disk = part_to_disk(part);
+       struct request_queue *q = disk->queue;
+       unsigned long flags;
 
        part->start_sect = 0;
        part->nr_sects = 0;
        part_stat_set_all(part, 0);
        put_device(part_to_dev(part));
+
+       spin_lock_irqsave(q->queue_lock, flags);
+       elv_quiesce_end(q);
+       spin_unlock_irqrestore(q->queue_lock, flags);
 }
 
 void delete_partition(struct gendisk *disk, int partno)
 {
        struct disk_part_tbl *ptbl = disk->part_tbl;
        struct hd_struct *part;
+       struct request_queue *q = disk->queue;
 
        if (partno >= ptbl->len)
                return;
@@ -389,6 +398,10 @@ void delete_partition(struct gendisk *disk, int partno)
        kobject_put(part->holder_dir);
        device_del(part_to_dev(part));
 
+       spin_lock_irq(q->queue_lock);
+       elv_quiesce_start(q);
+       spin_unlock_irq(q->queue_lock);
+
        call_rcu(&part->rcu_head, delete_partition_rcu_cb);
 }
 
@@ -401,7 +414,8 @@ static DEVICE_ATTR(whole_disk, S_IRUSR | S_IRGRP | S_IROTH,
                   whole_disk_show, NULL);
 
 struct hd_struct *add_partition(struct gendisk *disk, int partno,
-                               sector_t start, sector_t len, int flags)
+                               sector_t start, sector_t len, int flags,
+                               struct partition_meta_info *info)
 {
        struct hd_struct *p;
        dev_t devt = MKDEV(0, 0);
@@ -438,6 +452,14 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno,
        p->partno = partno;
        p->policy = get_disk_ro(disk);
 
+       if (info) {
+               struct partition_meta_info *pinfo = alloc_part_info(disk);
+               if (!pinfo)
+                       goto out_free_stats;
+               memcpy(pinfo, info, sizeof(*info));
+               p->info = pinfo;
+       }
+
        dname = dev_name(ddev);
        if (isdigit(dname[strlen(dname) - 1]))
                dev_set_name(pdev, "%sp%d", dname, partno);
@@ -451,7 +473,7 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno,
 
        err = blk_alloc_devt(p, &devt);
        if (err)
-               goto out_free_stats;
+               goto out_free_info;
        pdev->devt = devt;
 
        /* delay uevent until 'holders' subdir is created */
@@ -481,6 +503,8 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno,
 
        return p;
 
+out_free_info:
+       free_part_info(p);
 out_free_stats:
        free_part_stats(p);
 out_free:
@@ -642,6 +666,7 @@ rescan:
        /* add partitions */
        for (p = 1; p < state->limit; p++) {
                sector_t size, from;
+               struct partition_meta_info *info = NULL;
 
                size = state->parts[p].size;
                if (!size)
@@ -675,8 +700,12 @@ rescan:
                                size = get_capacity(disk) - from;
                        }
                }
+
+               if (state->parts[p].has_info)
+                       info = &state->parts[p].info;
                part = add_partition(disk, p, from, size,
-                                    state->parts[p].flags);
+                                    state->parts[p].flags,
+                                    &state->parts[p].info);
                if (IS_ERR(part)) {
                        printk(KERN_ERR " %s: p%d could not be added: %ld\n",
                               disk->disk_name, p, -PTR_ERR(part));