On 05/11/2016 01:07 PM, Peter Zijlstra wrote:
On 05/13/2015 04:38 PM, Michal Hocko wrote:
quoted
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.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>