user/sven/linux.git/include/linux/blkdev.h, branch v4.18.11

block: Fix transfer when chunk sectors exceeds max

2018-06-26T18:18:27Z

A device may have boundary restrictions where the number of sectors between boundaries exceeds its max transfer size. In this case, we need to cap the max size to the smaller of the two limits. Reported-by: Jitendra Bhivare Tested-by: Jitendra Bhivare Cc: Reviewed-by: Martin K. Petersen Signed-off-by: Keith Busch Signed-off-by: Jens Axboe

block: remov blk_queue_invalidate_tags

2018-06-15T14:13:35Z

This function is entirely unused, so remove it and the tag_queue_busy member of struct request_queue. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

blk-mq: don't time out requests again that are in the timeout handler

2018-06-14T14:39:46Z

We can currently call the timeout handler again on a request that has already been handed over to the timeout handler. Prevent that with a new flag. Fixes: 12f5b931 ("blk-mq: Remove generation seqeunce") Reported-by: Andrew Randrianasulu Tested-by: Andrew Randrianasulu Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

block: convert bounce, q->bio_split to bioset_init()/mempool_init()

2018-05-30T21:33:32Z

Convert the core block functionality to embedded bio sets. Reviewed-by: Christoph Hellwig Signed-off-by: Kent Overstreet Signed-off-by: Jens Axboe

block: move ->timeout request member

2018-05-29T14:59:21Z

After the recent timeout handling changes, we have two holes in the struct. Move the timeout near the deadline, killing both, and moving related members closer together. On my config on x86-64, this shrinks struct request from 312 to 304 bytes. Signed-off-by: Jens Axboe

block: document the blk_eh_timer_return values

2018-05-29T14:59:21Z

Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Johannes Thumshirn Signed-off-by: Jens Axboe

block: remove BLK_EH_HANDLED

2018-05-29T14:59:21Z

Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Johannes Thumshirn Signed-off-by: Jens Axboe

block: rename BLK_EH_NOT_HANDLED to BLK_EH_DONE

2018-05-29T14:59:21Z

The BLK_EH_NOT_HANDLED implies nothing happen, but very often that is not what is happening - instead the driver already completed the command. Fix the symbolic name to reflect that a little better. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Johannes Thumshirn Signed-off-by: Jens Axboe

blk-mq: Remove generation seqeunce

2018-05-29T14:59:21Z

This patch simplifies the timeout handling by relying on the request reference counting to ensure the iterator is operating on an inflight and truly timed out request. Since the reference counting prevents the tag from being reallocated, the block layer no longer needs to prevent drivers from completing their requests while the timeout handler is operating on it: a driver completing a request is allowed to proceed to the next state without additional syncronization with the block layer. This also removes any need for generation sequence numbers since the request lifetime is prevented from being reallocated as a new sequence while timeout handling is operating on it. To enables this a refcount is added to struct request so that request users can be sure they're operating on the same request without it changing while they're processing it. The request's tag won't be released for reuse until both the timeout handler and the completion are done with it. Signed-off-by: Keith Busch [hch: slight cleanups, added back submission side hctx lock, use cmpxchg for completions] Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

block: sanitize blk_get_request calling conventions

2018-05-14T14:55:12Z

Switch everyone to blk_get_request_flags, and then rename blk_get_request_flags to blk_get_request. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe