linux - linux

	Commit message (Collapse)	Author	Age	Files	Lines
*	block: Create bip slabs with embedded integrity vectors	Martin K. Petersen	2009-07-01	1	-45/+125
\| \| \| \| \| \| \| \| \| \| \| \| \|	This patch restores stacking ability to the block layer integrity infrastructure by creating a set of dedicated bip slabs. Each bip slab has an embedded bio_vec array at the end. This cuts down on memory allocations and also simplifies the code compared to the original bvec version. Only the largest bip slab is backed by a mempool. The pool is contained in the bio_set so stacking drivers can ensure forward progress. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <axboe@carl.(none)>
*	block: add private bio_set for bio integrity allocations	Martin K. Petersen	2009-03-24	1	-59/+26
\| \| \| \| \| \| \| \|	The integrity bio allocation needs its own bio_set to avoid violating the mempool allocation rules and risking deadlocks. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
*	block: Add gfp_mask parameter to bio_integrity_clone()	un'ichi Nomura	2009-03-14	1	-2/+3
\| \| \| \| \| \| \| \| \| \| \| \|	Stricter gfp_mask might be required for clone allocation. For example, request-based dm may clone bio in interrupt context so it has to use GFP_ATOMIC. Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Cc: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
*	block: Remove obsolete BUG_ON	Martin K. Petersen	2009-01-30	1	-1/+0
\| \| \| \| \| \| \| \|	Now that bio_vecs are no longer cleared in bvec_alloc_bs() the following BUG_ON must go. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
*	block: Don't verify integrity metadata on read error	Martin K. Petersen	2009-01-30	1	-10/+15
\| \| \| \| \| \| \| \| \|	If we get an I/O error on a read request there is no point in doing a verify pass on the integrity buffer. Adjust the completion path accordingly. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
*	bio: allow individual slabs in the bio_set	Jens Axboe	2008-12-29	1	-1/+1
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Instead of having a global bio slab cache, add a reference to one in each bio_set that is created. This allows for personalized slabs in each bio_set, so that they can have bios of different sizes. This means we can personalize the bios we return. File systems may want to embed the bio inside another structure, to avoid allocation more items (and stuffing them in ->bi_private) after the get a bio. Or we may want to embed a number of bio_vecs directly at the end of a bio, to avoid doing two allocations to return a bio. This is now possible. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
*	block: Introduce integrity data ownership flag	Martin K. Petersen	2008-10-09	1	-1/+2
\| \| \| \| \| \| \| \| \|	A filesystem might supply its own integrity metadata. Introduce a flag that indicates whether the filesystem or the block layer owns the integrity buffer. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
*	block: revert part of d7533ad0e132f92e75c1b2eb7c26387b25a583c1	Jens Axboe	2008-10-09	1	-5/+0
\| \| \| \| \| \|	We need bdev_get_integrity() to support the pending md/dm patches. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
*	block: cleanup some of the integrity stuff in blkdev.h	Jens Axboe	2008-10-09	1	-0/+31
\| \| \| \| \| \| \| \|	Don't put functions that are only used in fs/bio-integrity.c in blkdev.h, it's much cleaner to just keep it in there. Also kill completely unused bdev_get_tag_size() Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
*	bio-integrity: remove EXPORT_SYMBOL for bio_integrity_init_slab()	Yoichi Yuasa	2008-07-29	1	-1/+0
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	I got section mismatch message about bio_integrity_init_slab(). WARNING: fs/built-in.o(__ksymtab+0xb60): Section mismatch in reference from the variable __ksymtab_bio_integrity_init_slab to the function .init.text:bio_integrity_init_slab() The symbol bio_integrity_init_slab is exported and annotated __init Fix this by removing the __init annotation of bio_integrity_init_slab or drop the export. It only call from init_bio(). The EXPORT_SYMBOL() can be removed. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
*	block: integrity checkpatch cleanups	Jens Axboe	2008-07-03	1	-9/+20
\| \| \| \| \| \|	> 80 char lines and that sort of thing. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
*	block: Block layer data integrity support	Martin K. Petersen	2008-07-03	1	-0/+708
	Some block devices support verifying the integrity of requests by way of checksums or other protection information that is submitted along with the I/O. This patch implements support for generating and verifying integrity metadata, as well as correctly merging, splitting and cloning bios and requests that have this extra information attached. See Documentation/block/data-integrity.txt for more information. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>