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block: Add a helper to validate the block size
commit 570b1cac47
upstream.
There are some duplicated codes to validate the block
size in block drivers. This limitation actually comes
from block layer, so this patch tries to add a new block
layer helper for that.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Link: https://lore.kernel.org/r/20211026144015.188-2-xieyongji@bytedance.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tadeusz Struk <tadeusz.struk@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -59,6 +59,14 @@ struct blk_keyslot_manager;
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*/
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*/
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#define BLKCG_MAX_POLS 5
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#define BLKCG_MAX_POLS 5
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static inline int blk_validate_block_size(unsigned int bsize)
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{
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if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize))
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return -EINVAL;
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return 0;
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}
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typedef void (rq_end_io_fn)(struct request *, blk_status_t);
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typedef void (rq_end_io_fn)(struct request *, blk_status_t);
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/*
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/*
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