Messages in this thread | | | Date | Fri, 3 Mar 2017 00:14:36 -0700 (MST) | From | Umesh Patel <> | Subject | Re: Kernel bio layer is sending bio size more than our block device is capable of handling |
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From the kernel source code i came to know below things.
4.1 kernel version onward *""nr_pages = min(sdio->pages_in_io, bio_get_nr_vecs(map_bh->b_bdev))""* line has been removed which was considering max_sectors_kb of queue.
Now new code is something like this* "nr_pages = min(sdio->pages_in_io, BIO_MAX_PAGES)"*, which is sending 256 bytes of data to our device which we are not supporting.
Please let me know is there any other place where i can register my max_sectors_kb to kernel.
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