block: add a bdev_rw_virt helper

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Add a helper to perform synchronous I/O on a kernel direct map range.
Currently this is implemented in various places in usually not very
efficient ways, so provide a generic helper instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20250507120451.4000627-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2025-05-07 14:04:26 +02:00 • committed by Jens Axboe

parent 850e210d5a

commit 10b1e59cda

2 changed files with 34 additions and 1 deletions

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30

block/bio.c

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5

include/linux/bio.h

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