Commit 4a9d6d66 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

block: don't call into the driver for BLKFLSBUF 



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: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent daaedb82

block/ioctl.c

+0 −7
Original line number Diff line number Diff line
@@ -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;