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path: root/drivers/block/loop.c
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Diffstat (limited to 'drivers/block/loop.c')
-rw-r--r--drivers/block/loop.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 8546d123b9a..a90e83c9be9 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -835,6 +835,8 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
set_capacity(lo->lo_disk, size);
bd_set_size(bdev, size << 9);
+ /* let user-space know about the new size */
+ kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
set_blocksize(bdev, lo_blocksize);
@@ -858,6 +860,7 @@ out_clr:
set_capacity(lo->lo_disk, 0);
invalidate_bdev(bdev);
bd_set_size(bdev, 0);
+ kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
mapping_set_gfp_mask(mapping, lo->old_gfp_mask);
lo->lo_state = Lo_unbound;
out_putf:
@@ -944,8 +947,11 @@ static int loop_clr_fd(struct loop_device *lo, struct block_device *bdev)
if (bdev)
invalidate_bdev(bdev);
set_capacity(lo->lo_disk, 0);
- if (bdev)
+ if (bdev) {
bd_set_size(bdev, 0);
+ /* let user-space know about this change */
+ kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
+ }
mapping_set_gfp_mask(filp->f_mapping, gfp);
lo->lo_state = Lo_unbound;
/* This is safe: open() is still holding a reference. */
@@ -1189,6 +1195,8 @@ static int loop_set_capacity(struct loop_device *lo, struct block_device *bdev)
sz <<= 9;
mutex_lock(&bdev->bd_mutex);
bd_set_size(bdev, sz);
+ /* let user-space know about the new size */
+ kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
mutex_unlock(&bdev->bd_mutex);
out: