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authorChristoph Hellwig <hch@lst.de>2020-09-25 18:06:18 +0200
committerJens Axboe <axboe@kernel.dk>2020-10-05 10:38:33 -0600
commit10ed16662da9e28a33b6c991c36c6b323b03dd5b (patch)
tree18e9b39f3f6eb5528a33567258782a20c96384c0 /kernel/trace
parent155bd9d1abd60497f3e84ef3251b40209f7f7900 (diff)
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')
-rw-r--r--kernel/trace/blktrace.c9
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;