Xen devel - Jun 2009 - How to get all the sectors of a file in domU?

hi, all

when domU read a file , it will put request into request queue, and the
request contain all the sectors number need to read. use
req->bio->bi_sector    can get the first sector.

but how to get all the sectors of the file?
-- 
Best regards,
张树坤
北京理工大学，计算机科学技术学院
Sucan
Computer Department,Beijing Institute of Technology,China


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