block: add a bio_add_virt_nofail helper

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Add a helper to add a directly mapped kernel virtual address to a
bio so that callers don't have to convert to pages or folios.

For now only the _nofail variant is provided as that is what all the
obvious callers want.

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/20250507120451.4000627-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2025-05-07 14:04:25 +02:00 • committed by Jens Axboe

parent f31acff017

commit 850e210d5a

2 changed files with 18 additions and 0 deletions

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16

block/bio.c

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2

include/linux/bio.h

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