[Bug 12207] block reads/writes > 122880 bytes to USB tape drive gives EBUSY

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http://bugzilla.kernel.org/show_bug.cgi?id=12207





------- Comment #16 from stern@xxxxxxxxxxxxxxxxxxx  2008-12-23 18:56 -------
USB is working fine, and the patch you proposed should take care of tape
devices okay.  However the block layer still limits max_sectors to
BLK_DEF_MAX_SECTORS (see the code for blk_queue_max_sectors), which is defined
as 1024.  Thus there's no way to request a transfer of more than 512 KB, unless
st.c does some fancy footwork.


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