ebc06241dbc56f42150f2abe

Trond: The problem is that since it relies on virt_to_page(), you cannot
call sg_set_buf() for data in the const section.

Reported-by: Olga Kornievskaia <aglo@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org	[2.6.36+]
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