Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[linux-2.6] / drivers / md / dm-table.c

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 84f4594afd3ccffcd5f2f72cb96785291b28b0cc..8f56a54cf0ce5eefe2a742f79a65e49dd21f0fbc 100644 (file)
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -14,6 +14,7 @@
 #include <linux/ctype.h>
 #include <linux/slab.h>
 #include <linux/interrupt.h>
+#include <linux/mutex.h>
 #include <asm/atomic.h>
 
 #define MAX_DEPTH 16
@@ -350,7 +351,7 @@ static struct dm_dev *find_device(struct list_head *l, dev_t dev)
 /*
  * Open a device so we can use it as a map destination.
  */
-static int open_dev(struct dm_dev *d, dev_t dev)
+static int open_dev(struct dm_dev *d, dev_t dev, struct mapped_device *md)
 {
        static char *_claim_ptr = "I belong to device-mapper";
        struct block_device *bdev;
@@ -362,7 +363,7 @@ static int open_dev(struct dm_dev *d, dev_t dev)
        bdev = open_by_devnum(dev, d->mode);
        if (IS_ERR(bdev))
                return PTR_ERR(bdev);
-       r = bd_claim(bdev, _claim_ptr);
+       r = bd_claim_by_disk(bdev, _claim_ptr, dm_disk(md));
        if (r)
                blkdev_put(bdev);
        else
@@ -373,12 +374,12 @@ static int open_dev(struct dm_dev *d, dev_t dev)
 /*
  * Close a device that we've been using.
  */
-static void close_dev(struct dm_dev *d)
+static void close_dev(struct dm_dev *d, struct mapped_device *md)
 {
        if (!d->bdev)
                return;
 
-       bd_release(d->bdev);
+       bd_release_from_disk(d->bdev, dm_disk(md));
        blkdev_put(d->bdev);
        d->bdev = NULL;
 }
@@ -399,7 +400,7 @@ static int check_device_area(struct dm_dev *dd, sector_t start, sector_t len)
  * careful to leave things as they were if we fail to reopen the
  * device.
  */
-static int upgrade_mode(struct dm_dev *dd, int new_mode)
+static int upgrade_mode(struct dm_dev *dd, int new_mode, struct mapped_device *md)
 {
        int r;
        struct dm_dev dd_copy;
@@ -409,9 +410,9 @@ static int upgrade_mode(struct dm_dev *dd, int new_mode)
 
        dd->mode |= new_mode;
        dd->bdev = NULL;
-       r = open_dev(dd, dev);
+       r = open_dev(dd, dev, md);
        if (!r)
-               close_dev(&dd_copy);
+               close_dev(&dd_copy, md);
        else
                *dd = dd_copy;
 
@@ -453,7 +454,7 @@ static int __table_get_device(struct dm_table *t, struct dm_target *ti,
                dd->mode = mode;
                dd->bdev = NULL;
 
-               if ((r = open_dev(dd, dev))) {
+               if ((r = open_dev(dd, dev, t->md))) {
                        kfree(dd);
                        return r;
                }
@@ -464,7 +465,7 @@ static int __table_get_device(struct dm_table *t, struct dm_target *ti,
                list_add(&dd->list, &t->devices);
 
        } else if (dd->mode != (mode | dd->mode)) {
-               r = upgrade_mode(dd, mode);
+               r = upgrade_mode(dd, mode, t->md);
                if (r)
                        return r;
        }
@@ -541,7 +542,7 @@ int dm_get_device(struct dm_target *ti, const char *path, sector_t start,
 void dm_put_device(struct dm_target *ti, struct dm_dev *dd)
 {
        if (atomic_dec_and_test(&dd->count)) {
-               close_dev(dd);
+               close_dev(dd, ti->table->md);
                list_del(&dd->list);
                kfree(dd);
        }
@@ -770,14 +771,14 @@ int dm_table_complete(struct dm_table *t)
        return r;
 }
 
-static DECLARE_MUTEX(_event_lock);
+static DEFINE_MUTEX(_event_lock);
 void dm_table_event_callback(struct dm_table *t,
                             void (*fn)(void *), void *context)
 {
-       down(&_event_lock);
+       mutex_lock(&_event_lock);
        t->event_fn = fn;
        t->event_context = context;
-       up(&_event_lock);
+       mutex_unlock(&_event_lock);
 }
 
 void dm_table_event(struct dm_table *t)
@@ -788,10 +789,10 @@ void dm_table_event(struct dm_table *t)
         */
        BUG_ON(in_interrupt());
 
-       down(&_event_lock);
+       mutex_lock(&_event_lock);
        if (t->event_fn)
                t->event_fn(t->event_context);
-       up(&_event_lock);
+       mutex_unlock(&_event_lock);
 }
 
 sector_t dm_table_get_size(struct dm_table *t)