Koute 3d89fa3605 Prevent unsoundness in environments with broken madvise(MADV_DONTNEED) (#11722)
* Prevend unsoundness in environments with broken `madvise(MADV_DONTNEED)`

* Add the `std` feature to `rustix` dependency

Apparently not having this breaks compilation on non-nightly toolchains.

* Autodetect the page size when checking whether `madvise` works

* Only make sure that the madvice check doesn't return `Err`
2022-06-28 06:54:56 +00:00
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