From: Joe Thornber <thornber@sistina.com>
When setting the size of a Device-Mapper device in the gendisk entry, also
try to set the size of the corresponding block_device entry's inode. This is
necessary to allow online device/filesystem resizing to work correctly.
[Kevin Corry]
25-akpm/drivers/md/dm.c | 17 +++++++++++++++--
1 files changed, 15 insertions(+), 2 deletions(-)
diff -puN drivers/md/dm.c~dm-1-fix-block-device-resizing drivers/md/dm.c
--- 25/drivers/md/dm.c~dm-1-fix-block-device-resizing Tue Nov 25 12:53:41 2003
+++ 25-akpm/drivers/md/dm.c Tue Nov 25 12:53:41 2003
@@ -662,6 +662,20 @@ static void event_callback(void *context
up_write(&md->lock);
}
+static void __set_size(struct gendisk *disk, sector_t size)
+{
+ struct block_device *bdev;
+
+ set_capacity(disk, size);
+ bdev = bdget_disk(disk, 0);
+ if (bdev) {
+ down(&bdev->bd_inode->i_sem);
+ i_size_write(bdev->bd_inode, size << SECTOR_SHIFT);
+ up(&bdev->bd_inode->i_sem);
+ bdput(bdev);
+ }
+}
+
static int __bind(struct mapped_device *md, struct dm_table *t)
{
request_queue_t *q = md->queue;
@@ -669,7 +683,7 @@ static int __bind(struct mapped_device *
md->map = t;
size = dm_table_get_size(t);
- set_capacity(md->disk, size);
+ __set_size(md->disk, size);
if (size == 0)
return 0;
@@ -688,7 +702,6 @@ static void __unbind(struct mapped_devic
dm_table_event_callback(md->map, NULL, NULL);
dm_table_put(md->map);
md->map = NULL;
- set_capacity(md->disk, 0);
}
/*
_