[PATCH 03/11] block: don't call into the driver for BLKFLSBUF
From: Christoph Hellwig <hch@lst.de>
Date: 2020-10-31 09:07:07
Also in:
ceph-devel, linux-bcache, linux-block, linux-s390
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
BLKFLSBUF is entirely contained in the block core, and there is no good reason to give the driver a hook into processing it. Signed-off-by: Christoph Hellwig <hch@lst.de> --- block/ioctl.c | 7 ------- 1 file changed, 7 deletions(-)
diff --git a/block/ioctl.c b/block/ioctl.c
index 3fbc382eb926d4..c6d8863f040945 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c@@ -369,15 +369,8 @@ static inline int is_unrecognized_ioctl(int ret) static int blkdev_flushbuf(struct block_device *bdev, fmode_t mode, unsigned cmd, unsigned long arg) { - int ret; - if (!capable(CAP_SYS_ADMIN)) return -EACCES; - - ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg); - if (!is_unrecognized_ioctl(ret)) - return ret; - fsync_bdev(bdev); invalidate_bdev(bdev); return 0;
--
2.28.0