block: factor out a blk_write_zeroes_limit helper

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Contrary to the comment in __blkdev_issue_write_zeroes, nothing here
checks for a potential bi_size overflow.  Add a helper mirroring
the secure erase code for the check.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240701165219.1571322-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2024-07-01 18:51:15 +02:00 • committed by Jens Axboe

parent 2f20872ed4

commit 73a768d5f9

1 changed files with 11 additions and 7 deletions

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block/blk-lib.c

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