[PATCH 5/6] block: cache the partition index in struct block_device
From: Christoph Hellwig <hch@lst.de>
Date: 2017-08-23 17:10:31
Also in:
linux-block, linux-btrfs
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Signed-off-by: Christoph Hellwig <hch@lst.de> --- fs/block_dev.c | 1 + include/linux/fs.h | 1 + 2 files changed, 2 insertions(+)
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;
--
2.11.0