linux/block/ioctl.c, branch v5.7

block: move block layer internals out of include/linux/genhd.h

2020-03-25T15:50:08Z

None of this needs to be exposed to drivers. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

compat_ioctl: simplify up block/ioctl.c

2020-01-03T08:42:52Z

Having separate implementations of blkdev_ioctl() often leads to these getting out of sync, despite the comment at the top. Since most of the ioctl commands are compatible, and we try very hard not to add any new incompatible ones, move all the common bits into a shared function and leave only the ones that are historically different in separate functions for native/compat mode. To deal with the compat_ptr() conversion, pass both the integer argument and the pointer argument into the new blkdev_common_ioctl() and make sure to always use the correct one of these. blkdev_ioctl() is now only kept as a separate exported interfact for drivers/char/raw.c, which lacks a compat_ioctl variant. We should probably either move raw.c to staging if there are no more users, or export blkdev_compat_ioctl() as well. Reviewed-by: Ben Hutchings Signed-off-by: Arnd Bergmann

compat_ioctl: block: simplify compat_blkpg_ioctl()

2020-01-03T08:42:52Z

There is no need to go through a compat_alloc_user_space() copy any more, just wrap the function in a small helper that works the same way for native and compat mode. Reviewed-by: Ben Hutchings Signed-off-by: Arnd Bergmann

compat_ioctl: block: move blkdev_compat_ioctl() into ioctl.c

2020-01-03T08:42:52Z

Having both in the same file allows a number of simplifications to the compat path, and makes it more likely that changes to the native path get applied to the compat version as well. Reviewed-by: Ben Hutchings Signed-off-by: Arnd Bergmann

compat_ioctl: block: add blkdev_compat_ptr_ioctl

2020-01-03T08:32:59Z

A lot of block drivers need only a trivial .compat_ioctl callback. Add a helper function that can be set as the callback pointer to only convert the argument using the compat_ptr() conversion and otherwise assume all input and output data is compatible, or handled using in_compat_syscall() checks. This mirrors the compat_ptr_ioctl() helper function used in character devices. Reviewed-by: Ben Hutchings Signed-off-by: Arnd Bergmann

block: simplify blkdev_nr_zones

2019-12-03T15:51:24Z

Simplify the arguments to blkdev_nr_zones by passing a gendisk instead of the block_device and capacity. This also removes the need for __blkdev_nr_zones as all callers are outside the fast path and can deal with the additional branch. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

block: remove (__)blkdev_reread_part as an exported API

2019-11-14T14:43:59Z

In general drivers should never mess with partition tables directly. Unfortunately s390 and loop do for somewhat historic reasons, but they can use bdev_disk_changed directly instead when we export it as they satisfy the sanity checks we have in __blkdev_reread_part. Signed-off-by: Christoph Hellwig Reviewed-by: Stefan Haberland [dasd] Reviewed-by: Jan Kara Signed-off-by: Jens Axboe

block: fix bdev_disk_changed for non-partitioned devices

2019-11-14T14:43:53Z

We still have to set the capacity to 0 if invalidating or call revalidate_disk if not even if the disk has no partitions. Fix that by merging rescan_partitions into bdev_disk_changed and just stubbing out blk_add_partitions and blk_drop_partitions for non-partitioned devices. Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara Signed-off-by: Jens Axboe

block: merge invalidate_partitions into rescan_partitions

2019-11-14T14:42:41Z

A lot of the logic in invalidate_partitions and rescan_partitions is shared. Merge the two functions to simplify things. There is a small behavior change in that we now send the kevent change notice also if we were not invalidating but no partitions were found, which seems like the right thing to do. Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara Signed-off-by: Jens Axboe

block: add zone open, close and finish ioctl support

2019-11-07T13:31:50Z

Introduce three new ioctl commands BLKOPENZONE, BLKCLOSEZONE and BLKFINISHZONE to allow applications to control the condition of zones on a zoned block device through the execution of the REQ_OP_ZONE_OPEN, REQ_OP_ZONE_CLOSE and REQ_OP_ZONE_FINISH operations. Contains contributions from Matias Bjorling, Hans Holmberg, Dmitry Fomichev, Keith Busch, Damien Le Moal and Christoph Hellwig. Reviewed-by: Javier González Reviewed-by: Christoph Hellwig Signed-off-by: Ajay Joshi Signed-off-by: Matias Bjorling Signed-off-by: Hans Holmberg Signed-off-by: Dmitry Fomichev Signed-off-by: Keith Busch Signed-off-by: Damien Le Moal Signed-off-by: Jens Axboe