diff options
| author | Horst Hummel <horst.hummel@de.ibm.com> | 2006-02-01 03:06:36 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-01 08:53:24 -0800 |
| commit | 57467195d1581e354998d5cc35dfd7a12d6e0a24 (patch) | |
| tree | 6b8db246cc3856a15d30ade8e057e069cef34927 /drivers/s390/block | |
| parent | 600b5d163d7434332539cac7be00f649cbbfedcc (diff) | |
| download | linux-57467195d1581e354998d5cc35dfd7a12d6e0a24.tar.bz2 | |
[PATCH] s390: dasd open counter
The open_count is increased for every opener, that includes the blkdev_get in
dasd_scan_partitions. This tampers the open_count in BIODASDINFO. Hide the
internal open from user-space.
Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/s390/block')
| -rw-r--r-- | drivers/s390/block/dasd_ioctl.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c index 74ed5f4dd5e0..fafeeae52675 100644 --- a/drivers/s390/block/dasd_ioctl.c +++ b/drivers/s390/block/dasd_ioctl.c @@ -421,8 +421,15 @@ dasd_ioctl_information(struct block_device *bdev, int no, long args) dasd_info->cu_model = cdev->id.cu_model; dasd_info->dev_type = cdev->id.dev_type; dasd_info->dev_model = cdev->id.dev_model; - dasd_info->open_count = atomic_read(&device->open_count); dasd_info->status = device->state; + /* + * The open_count is increased for every opener, that includes + * the blkdev_get in dasd_scan_partitions. + * This must be hidden from user-space. + */ + dasd_info->open_count = atomic_read(&device->open_count); + if (!device->bdev) + dasd_info->open_count++; /* * check if device is really formatted |