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authorJun'ichi Nomura <j-nomura@ce.jp.nec.com>2006-03-27 01:17:59 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-27 08:45:00 -0800
commitf165921df46a977e3561f1bd9f13a348441486d1 (patch)
treea44679427f97090aeb4d5ba62568a41f4b367763 /drivers
parent5463c7904c952aa6b6804dd902c72a5332fa5221 (diff)
[PATCH] dm/md dependency tree in sysfs: dm to use bd_claim_by_disk
Use bd_claim_by_disk. Following symlinks are created if dm-0 maps to sda: /sys/block/dm-0/slaves/sda --> /sys/block/sda /sys/block/sda/holders/dm-0 --> /sys/block/dm-0 Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Cc: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/md/dm-table.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 84f4594afd3..76610a6ac01 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -350,7 +350,7 @@ 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 +362,7 @@ 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 +373,12 @@ 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 +399,7 @@ 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 +409,9 @@ 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 +453,7 @@ 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 +464,7 @@ 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 +541,7 @@ 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);
}