diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-09-25 18:06:18 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-10-05 10:38:33 -0600 |
| commit | 10ed16662da9e28a33b6c991c36c6b323b03dd5b (patch) | |
| tree | 18e9b39f3f6eb5528a33567258782a20c96384c0 /kernel/trace/blktrace.c | |
| parent | 155bd9d1abd60497f3e84ef3251b40209f7f7900 (diff) | |
| download | linux-10ed16662da9e28a33b6c991c36c6b323b03dd5b.tar.bz2 | |
block: add a bdget_part helper
All remaining callers of bdget() outside of fs/block_dev.c want to get a
reference to the struct block_device for a given struct hd_struct. Add
a helper just for that and then mark bdget static.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'kernel/trace/blktrace.c')
| -rw-r--r-- | kernel/trace/blktrace.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index ec874ea04092..f1022945e346 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -1827,13 +1827,11 @@ static ssize_t sysfs_blk_trace_attr_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct hd_struct *p = dev_to_part(dev); + struct block_device *bdev = bdget_part(dev_to_part(dev)); struct request_queue *q; - struct block_device *bdev; struct blk_trace *bt; ssize_t ret = -ENXIO; - bdev = bdget(part_devt(p)); if (bdev == NULL) goto out; @@ -1875,7 +1873,6 @@ static ssize_t sysfs_blk_trace_attr_store(struct device *dev, { struct block_device *bdev; struct request_queue *q; - struct hd_struct *p; struct blk_trace *bt; u64 value; ssize_t ret = -EINVAL; @@ -1895,9 +1892,7 @@ static ssize_t sysfs_blk_trace_attr_store(struct device *dev, goto out; ret = -ENXIO; - - p = dev_to_part(dev); - bdev = bdget(part_devt(p)); + bdev = bdget_part(dev_to_part(dev)); if (bdev == NULL) goto out; |