kernel/linux.git/block/blk-integrity.c, branch v6.12.80

block: add a queue_limits_commit_update_frozen helper

2025-09-09T16:58:24+00:00

[ Upstream commit aa427d7b73b196f657d6d2cf0e94eff6b883fdef ] Add a helper that freezes the queue, updates the queue limits and unfreezes the queue and convert all open coded versions of that to the new helper. Signed-off-by: Christoph Hellwig Reviewed-by: John Garry Reviewed-by: Ming Lei Reviewed-by: Damien Le Moal Reviewed-by: Martin K. Petersen Reviewed-by: Nilay Shroff Reviewed-by: Johannes Thumshirn Link: https://lore.kernel.org/r/20250110054726.1499538-3-hch@lst.de Signed-off-by: Jens Axboe Stable-dep-of: 708e2371f77a ("scsi: sr: Reinstate rotational media flag") Signed-off-by: Sasha Levin

block: fix blk_rq_map_integrity_sg kernel-doc

2024-10-02T13:15:33+00:00

Fix the documentation to match the new function signature. Fixes: 76c313f658d2752 ("blk-integrity: improved sg segment mapping") Signed-off-by: Keith Busch Reviewed-by: Christoph Hellwig Link: https://lore.kernel.org/r/20240922141800.3622319-1-kbusch@meta.com Signed-off-by: Jens Axboe

blk-integrity: improved sg segment mapping

2024-09-13T19:22:09+00:00

Make the integrity mapping more like data mapping, blk_rq_map_sg. Use the request to validate the segment count, and update the callers so they don't have to. Reviewed-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Signed-off-by: Keith Busch Link: https://lore.kernel.org/r/20240913191746.2628196-1-kbusch@meta.com Signed-off-by: Jens Axboe

block: unexport blk_rq_count_integrity_sg

2024-09-13T18:31:45+00:00

There are no external users of this. Reviewed-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Signed-off-by: Keith Busch Link: https://lore.kernel.org/r/20240913182854.2445457-9-kbusch@meta.com Signed-off-by: Jens Axboe

block: provide a request helper for user integrity segments

2024-09-13T18:31:45+00:00

Provide a helper to keep the request flags and nr_integrity_segments in sync with the bio's integrity payload. This is an integrity equivalent to the normal data helper function, 'blk_rq_map_user()'. Reviewed-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Kanchan Joshi Signed-off-by: Keith Busch Link: https://lore.kernel.org/r/20240913182854.2445457-6-kbusch@meta.com Signed-off-by: Jens Axboe

blk-integrity: consider entire bio list for merging

2024-09-13T18:31:45+00:00

If a bio is merged to a request, the entire bio list is merged, so don't temporarily detach it from its list when counting segments. In most cases, bi_next will already be NULL, so detaching is usually a no-op. But if the bio does have a list, the current code is miscounting the segments for the resulting merge. Reviewed-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Signed-off-by: Keith Busch Link: https://lore.kernel.org/r/20240913182854.2445457-5-kbusch@meta.com Signed-off-by: Jens Axboe

blk-integrity: properly account for segments

2024-09-13T18:31:45+00:00

Both types of merging when integrity data is used are miscounting the segments: Merging two requests wasn't accounting for the new segment count, so add the "next" segment count to the first on a successful merge to ensure this value is accurate. Merging a bio into an existing request was double counting the bio's segments, even if the merge failed later on. Move the segment accounting to the end when the merge is successful. Reviewed-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Signed-off-by: Keith Busch Link: https://lore.kernel.org/r/20240913182854.2445457-4-kbusch@meta.com Signed-off-by: Jens Axboe

block: cleanup flag_{show,store}

2024-06-17T16:13:37+00:00

Remove a superfluous argument that flag_show and flag_store currently take. Signed-off-by: Kanchan Joshi Reviewed-by: Christoph Hellwig Link: https://lore.kernel.org/r/20240617044918.374608-1-joshi.k@samsung.com Signed-off-by: Jens Axboe

block: move integrity information into queue_limits

2024-06-14T16:20:07+00:00

Move the integrity information into the queue limits so that it can be set atomically with other queue limits, and that the sysfs changes to the read_verify and write_generate flags are properly synchronized. This also allows to provide a more useful helper to stack the integrity fields, although it still is separate from the main stacking function as not all stackable devices want to inherit the integrity settings. Even with that it greatly simplifies the code in md and dm. Note that the integrity field is moved as-is into the queue limits. While there are good arguments for removing the separate blk_integrity structure, this would cause a lot of churn and might better be done at a later time if desired. However the integrity field in the queue_limits structure is now unconditional so that various ifdefs can be avoided or replaced with IS_ENABLED(). Given that tiny size of it that seems like a worthwhile trade off. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Martin K. Petersen Link: https://lore.kernel.org/r/20240613084839.1044015-13-hch@lst.de Signed-off-by: Jens Axboe

block: invert the BLK_INTEGRITY_{GENERATE,VERIFY} flags

2024-06-14T16:20:06+00:00

Invert the flags so that user set values will be able to persist revalidating the integrity information once we switch the integrity information to queue_limits. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Reviewed-by: Hannes Reinecke Reviewed-by: Martin K. Petersen Link: https://lore.kernel.org/r/20240613084839.1044015-12-hch@lst.de Signed-off-by: Jens Axboe