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| author | Christoph Hellwig <hch@lst.de> | 2020-11-23 15:44:44 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-12-02 00:53:39 +0300 |
| commit | 7918f0f6fdafa1e52c2d77c537cb55ef25fb69a3 (patch) | |
| tree | 34d1be96485377aab10698ba07ab5c0b06b2889e | |
| parent | 63d9932caecee8b0a295c608d083280b45885d10 (diff) | |
| download | linux-7918f0f6fdafa1e52c2d77c537cb55ef25fb69a3.tar.xz | |
block: opencode devcgroup_inode_permission
Just call devcgroup_check_permission to avoid various superflous checks
and a double conversion of the access flags.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | fs/block_dev.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index a2d5050c97ee..2b8c0586314f 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1520,15 +1520,13 @@ static int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder) struct block_device *claiming; bool unblock_events = true; struct gendisk *disk; - int perm = 0; int partno; int ret; - if (mode & FMODE_READ) - perm |= MAY_READ; - if (mode & FMODE_WRITE) - perm |= MAY_WRITE; - ret = devcgroup_inode_permission(bdev->bd_inode, perm); + ret = devcgroup_check_permission(DEVCG_DEV_BLOCK, + imajor(bdev->bd_inode), iminor(bdev->bd_inode), + ((mode & FMODE_READ) ? DEVCG_ACC_READ : 0) | + ((mode & FMODE_WRITE) ? DEVCG_ACC_WRITE : 0)); if (ret) goto bdput; |