null_blk: single kmap per bio segment

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Rather than kmap the the request bio segment for each sector, do
the mapping just once.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Tested-by: Hans Holmberg <hans.holmberg@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Keith Busch 2025-11-05 17:54:46 -08:00 • committed by Jens Axboe

parent 8459283819

commit 262a3dd04e

1 changed files with 14 additions and 18 deletions

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32

drivers/block/null_blk/main.c

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