Messages in this thread |  | | | Date | Sat, 14 Oct 2006 05:15:07 -0500 | | From | Robin Holt <> | | Subject | Re: [PATCH] get_user_pages(..., write==1, ...) may return with readable pte. |
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> dup_mmap holds mmap_sem for write. get_user_pages caller must hold it > for read.
I could have sworn I checked for that and found a down_read(), but now that I look when I have some time, it is clearly a down_write(). Sorry for the distraction.
It is a user job that is passing data between hosts. The host is under heavy memory pressure and one rank of the MPI job gets silent data corruption.
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