From 7918f0f6fdafa1e52c2d77c537cb55ef25fb69a3 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 23 Nov 2020 13:44:44 +0100 Subject: 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 Acked-by: Tejun Heo Reviewed-by: Jan Kara Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe --- fs/block_dev.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'fs') 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; -- cgit v1.2.3