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]