bio size is always 4096

[neha naik]

Hi,
   I was under the impression that when the bio comes to a block device
driver its size is variable. But, after writing a block device driver i
realized that such is not the case and it always is 4096.
Does this mean that by default if i don't use any merge function the bio
will always have size 4096(meaning it will have only 1 page!!!!).


Regards,
Neha
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