[PATCH] D116603: [AIX][z/OS][Support] Provide alternate mapped_file_region::dontNeedImpl implementations

[Zibi Sarbino via Phabricator via llvm-commits]

zibi added a comment.

LGTM, but I would prefer if we could use ` ::posix_madvise()` not just on AIX. This will remove the unnecessary directive path. 
However, we need to buy-in from the originator which introduced this call.


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  https://reviews.llvm.org/D116603/new/

https://reviews.llvm.org/D116603