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| author | Yi Li <yili@winhong.com> | 2020-12-23 23:04:21 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-12-23 09:25:15 -0700 |
| commit | 117ae250cfa3718f21bd07df0650dfbe3bc3a823 (patch) | |
| tree | 61e3e5b562e4f326bb855a42e8842f88183eac3c | |
| parent | 7b51e703a89b824dbbf65de96e77d10d4915dbe0 (diff) | |
| download | linux-117ae250cfa3718f21bd07df0650dfbe3bc3a823.tar.gz linux-117ae250cfa3718f21bd07df0650dfbe3bc3a823.tar.bz2 linux-117ae250cfa3718f21bd07df0650dfbe3bc3a823.zip | |
bcache:remove a superfluous check in register_bcache
There have no reassign the bdev after check It is IS_ERR.
the double check !IS_ERR(bdev) is superfluous.
After commit 4e7b5671c6a8 ("block: remove i_bdev"),
"Switch the block device lookup interfaces to directly work with a dev_t
so that struct block_device references are only acquired by the
blkdev_get variants (and the blk-cgroup special case). This means that
we now don't need an extra reference in the inode and can generally
simplify handling of struct block_device to keep the lookups contained
in the core block layer code."
so after lookup_bdev call, there no need to do bdput.
remove a superfluous check the bdev & don't call bdput after lookup_bdev.
Fixes: 4e7b5671c6a8("block: remove i_bdev")
Signed-off-by: Yi Li <yili@winhong.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | drivers/md/bcache/super.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 0e06d721cd8e..a4752ac410dc 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -2535,8 +2535,6 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr, else err = "device busy"; mutex_unlock(&bch_register_lock); - if (!IS_ERR(bdev)) - bdput(bdev); if (attr == &ksysfs_register_quiet) goto done; } |