RE: [PATCH 2/2] selftests: add tests for CLOSE_RANGE_CLOEXEC

[David Laight]

> Subject: [PATCH 2/2] selftests: add tests for CLOSE_RANGE_CLOEXEC

You really ought to check that it skips closed files.
For instance using dup2() to move some open files to 'big numbers'.

Although you know how it works, a 'black box' test would also
reduce RLIMIT_NOFILES below one of the open files and check
files above the RLIMIT_NOFILES value are affected.

	David

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