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(parent: 8459283) | patch
null_blk: single kmap per bio segment
authorKeith Busch <kbusch@kernel.org>
Thu, 6 Nov 2025 01:54:46 +0000 (17:54 -0800)
committerJens Axboe <axboe@kernel.dk>
Thu, 6 Nov 2025 23:27:36 +0000 (16:27 -0700)
commit262a3dd04e729386bececffeb095d31f7a9c43d5
tree82cc04b820e19ef324a89b3c8b78f669ef0a28bdtree
parent845928381963c61a537b932b6b3f494ce0ccea2dcommit | diff
null_blk: single kmap per bio segment

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>
drivers/block/null_blk/main.c diff | blob | history
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