From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org, linux-raid@vger.kernel.org,
linux-btrfs@vger.kernel.org
Subject: [PATCH 5/6] block: cache the partition index in struct block_device
Date: Wed, 23 Aug 2017 19:10:31 +0200 [thread overview]
Message-ID: <20170823171032.30529-6-hch@lst.de> (raw)
In-Reply-To: <20170823171032.30529-1-hch@lst.de>
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
next prev parent reply other threads:[~2017-08-23 17:10 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-23 17:10 don't require a struct block_device to submit a bio Christoph Hellwig
2017-08-23 17:10 ` [PATCH 1/6] btrfs: index check-integrity state hash by a dev_t Christoph Hellwig
2017-08-23 17:45 ` Liu Bo
2017-08-23 17:10 ` [PATCH 2/6] raid5: remove a call to get_start_sect Christoph Hellwig
2017-08-23 18:23 ` Shaohua Li
2017-08-24 9:18 ` Christoph Hellwig
2017-08-23 17:10 ` [PATCH 3/6] block: reject attempts to allocate more than DISK_MAX_PARTS partitions Christoph Hellwig
2017-08-23 17:10 ` [PATCH 4/6] block: add a __disk_get_part helper Christoph Hellwig
2017-08-23 17:10 ` Christoph Hellwig [this message]
2017-08-23 18:01 ` don't require a struct block_device to submit a bio Christoph Hellwig
2017-08-23 18:04 ` Jens Axboe
2017-08-23 18:50 ` Jens Axboe
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