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Tianyi Chen
c32fddc0a0
The mmap tests extend existing mappings one neighbor at a time, while merge tests construct merge state directly. Neither exercises filling a hole between compatible mappings through the mmap setup and completion path. Fill a gap through __mmap_region() and require both neighbors to merge into one VMA. Repeat with only the new mapping's execute permission set and require three separate VMAs. Check boundaries, permissions, page offsets, map_count and cleanup. Link: https://lore.kernel.org/178886112560.138404.17741948638665342936.vma-v2@tychen.cc Signed-off-by: Tianyi Chen <hi@tychen.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Lorenzo Stoakes (ARM) <ljs@kernel.org> Assisted-by: Codex:GPT-6 Cc: Jann Horn <jannh@google.com> Cc: Liam R. Howlett <liam@infradead.org> Cc: Pedro Falcato <pfalcato@suse.de> Cc: Vlastimil Babka <vbabka@kernel.org>