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author	Tejun Heo <htejun@gmail.com>
	Fri, 6 Jan 2006 08:51:03 +0000 (09:51 +0100)
committer	Jens Axboe <axboe@suse.de>
	Fri, 6 Jan 2006 08:51:03 +0000 (09:51 +0100)
commit	797e7dbbee0a91fa1349192f18ad5c454997d876
tree	c0d5974f469dd2d3d4f9b15d87d201b61e248f54	tree \| snapshot (tar.gz zip)
parent	52d9e675361261a1eb1716b02222ec6177ec342b	commit \| diff

[BLOCK] reimplement handling of barrier request

Reimplement handling of barrier requests.

* Flexible handling to deal with various capabilities of
target devices.
* Retry support for falling back.
* Tagged queues which don't support ordered tag can do ordered.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <axboe@suse.de>

block/elevator.c		diff \| blob \| blame \| history
block/ll_rw_blk.c		diff \| blob \| blame \| history
include/linux/blkdev.h		diff \| blob \| blame \| history
include/linux/elevator.h		diff \| blob \| blame \| history

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