On 05/11/2016 01:07 PM, Peter Zijlstra wrote:
On 05/13/2015 04:38 PM, Michal Hocko wrote:
This patch makes the semantic of MAP_LOCKED explicit and suggest using
mmap + mlock as the only way to guarantee no later major page faults.
URGH, this really blows chunks. It basically means MAP_LOCKED is
pointless cruft and we might as well remove it.
Why not fix it proper?
OK; after having been pointed at this discussion, it seems I reacted rather
too hasty in that I didn't read all the previous threads.
From that it appears fixing this proper is indeed rather hard, and we
should
indeed consider MAP_LOCKED broken. At which point I would've worded the
manpage update stronger, but alas.
Sorry for the noise.
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