diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-08-23 19:10:31 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-08-23 12:49:53 -0600 |
| commit | c2ee070fb00365d7841f6661dcdc7fbe6620bdf8 (patch) | |
| tree | 9dca74294cfcbba84a8690e88f93590ae51cc35d | |
| parent | 807d4af2f64ed79fdbb28e582e330be3dbe10d23 (diff) | |
block: cache the partition index in struct block_device
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | fs/block_dev.c | 1 | ||||
| -rw-r--r-- | include/linux/fs.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 9941dc8342df..d29d1c70f833 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1451,6 +1451,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) bdev->bd_disk = disk; bdev->bd_queue = disk->queue; bdev->bd_contains = bdev; + bdev->bd_partno = partno; if (!partno) { ret = -ENXIO; diff --git a/include/linux/fs.h b/include/linux/fs.h index 6e1fd5d21248..706dd3a972d2 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -427,6 +427,7 @@ struct block_device { #endif struct block_device * bd_contains; unsigned bd_block_size; + u8 bd_partno; struct hd_struct * bd_part; /* number of times partitions within this device have been opened. */ unsigned bd_part_count; |