Re: [PATCH v5 6/7] selftests: mm: Add a test for remapping within a range

[Lorenzo Stoakes]

On Sun, Aug 27, 2023 at 10:57:59AM +0100, Lorenzo Stoakes wrote:
[snip]

> > +/*
> > + * Verify that an mremap within a range does not cause corruption
> > + * of unrelated part of range.
> > + *
> > + * Consider the following range which is 2MB aligned and is
> > + * a part of a larger 10MB range which is not shown. Each
> > + * character is 256KB below making the source and destination

Just noticed, I think you misspeak here, as this test doens't seem to
offset by 256 KiB? That is the strategy for mremap_move_1mb_from_start()
rather than this test so perhaps comment needs to be moved around?

 * 2MB each. The lower case letters are moved (s to d) and the
 * upper case letters are not moved. The below test verifies
 * that the upper case S letters are not corrupted by the
 * adjacent mremap.
 *
 * |DDDDddddSSSSssss|
 */
 static void mremap_move_within_range(char pattern_seed)

[snip]