user/sven/linux.git/block/ioctl.c, branch v4.19.312

block: add a new set_read_only method

2024-03-26T22:22:34Z

[ Upstream commit e00adcadf3af7a8335026d71ab9f0e0a922191ac ] Add a new method to allow for driver-specific processing when setting or clearing the block device read-only state. This allows to replace the cumbersome and error-prone override of the whole ioctl implementation. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe Stable-dep-of: 9674f54e41ff ("md: Don't clear MD_CLOSING when the raid is about to stop") Signed-off-by: Sasha Levin

block: pass inclusive 'lend' parameter to truncate_inode_pages_range

2018-02-23T22:20:19Z

The 'lend' parameter of truncate_inode_pages_range is required to be inclusive, so follow the rule. This patch fixes one memory corruption triggered by discard. Cc: Cc: Dmitry Monakhov Fixes: 351499a172c0 ("block: Invalidate cache on discard v2") Reviewed-by: Bart Van Assche Signed-off-by: Ming Lei Signed-off-by: Jens Axboe

block: move CAP_SYS_ADMIN check in blkdev_roset()

2017-10-25T18:25:00Z

Check for CAP_SYS_ADMIN before calling into the driver, similar to blkdev_flushbuf(). This is safer and can spare a check in the driver. (Currently BLKROSET is overridden by md and rbd, rbd is missing the check. md has the check, but it covers a lot more than BLKROSET.) Acked-by: Al Viro Signed-off-by: Ilya Dryomov Signed-off-by: Jens Axboe

block: Invalidate cache on discard v2

2017-10-25T00:44:57Z

It is reasonable drop page cache on discard, otherwise that pages may be written by writeback second later, so thin provision devices will not be happy. This seems to be a security leak in case of secure discard case. Also add check for queue_discard flag on early stage. Signed-off-by: Dmitry Monakhov Reviewed-by: Christoph Hellwig Signed-off-by: Jens Axboe

block: remove the discard_zeroes_data flag

2017-04-08T17:25:38Z

Now that we use the proper REQ_OP_WRITE_ZEROES operation everywhere we can kill this hack. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe

block: add a flags argument to (__)blkdev_issue_zeroout

2017-04-08T17:25:38Z

Turn the existing discard flag into a new BLKDEV_ZERO_UNMAP flag with similar semantics, but without referring to diѕcard. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe

block: Get rid of blk_get_backing_dev_info()

2017-02-02T15:21:32Z

blk_get_backing_dev_info() is now a simple dereference. Remove that function and simplify some code around that. Signed-off-by: Jan Kara Signed-off-by: Jens Axboe

Replace with globally

2016-12-24T19:46:01Z

This was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*' sed -i -e "s!$PATT!#include !" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h) to do the replacement at the end of the merge window. Requested-by: Al Viro Signed-off-by: Linus Torvalds

block: check partition alignment

2016-12-19T16:20:59Z

Partitions that are not aligned to the blocksize of a device may cause invalid I/O requests because the blocklayer cares only about alignment within the partition when building requests on partitions. device |--------4096--------|--------4096--------|--------4096--------| partition offset 512byte |-512-|--------4096--------|--------4096--------|--------4096--------| When reading/writing one 4k block of the partition this maps to reading/writing with an offset of 512 byte of the device leading to unaligned requests for the device which in turn may cause unexpected behavior of the device driver. For DASD devices we have to translate the block number into a cylinder, head, record format. The unaligned requests lead to wrong calculation and therefore to misdirected I/O. In a "good" case this leads to I/O errors because the underlying hardware detects the wrong addressing. In a worst case scenario this might destroy data on the device. To prevent partitions that are not aligned to the physical blocksize of a device check for the alignment in the blkpg_ioctl. Signed-off-by: Stefan Haberland Reviewed-by: Christoph Hellwig Signed-off-by: Jens Axboe

blk-zoned: implement ioctls

2016-10-18T16:05:42Z

Adds the new BLKREPORTZONE and BLKRESETZONE ioctls for respectively obtaining the zone configuration of a zoned block device and resetting the write pointer of sequential zones of a zoned block device. The BLKREPORTZONE ioctl maps directly to a single call of the function blkdev_report_zones. The zone information result is passed as an array of struct blk_zone identical to the structure used internally for processing the REQ_OP_ZONE_REPORT operation. The BLKRESETZONE ioctl maps to a single call of the blkdev_reset_zones function. Signed-off-by: Shaun Tancheff Signed-off-by: Damien Le Moal Reviewed-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe