Lorenzo Stoakes 4535cb331c mm/vma: use vmg->target to specify target VMA for new VMA merge ... In commit 3a75ccba04 ("mm: simplify vma merge structure and expand comments") we introduced the vmg->target field to make the merging of existing VMAs simpler - clarifying precisely which VMA would eventually become the merged VMA once the merge operation was complete. New VMA merging did not get quite the same treatment, retaining the rather confusing convention of storing the target VMA in vmg->middle. This patch corrects this state of affairs, utilising vmg->target for this purpose for both vma_merge_new_range() and also for vma_expand(). We retain the WARN_ON for vmg->middle being specified in vma_merge_new_range() as doing so would make no sense, but add an additional debug assert for setting vmg->target. This patch additionally updates VMA userland testing to account for this change. [lorenzo.stoakes@oracle.com: make comment consistent in vma_expand()] Link: https://lkml.kernel.org/r/c54f45e3-a6ac-4749-93c0-cc9e3080ee37@lucifer.local Link: https://lkml.kernel.org/r/20250613184807.108089-1-lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Jann Horn <jannh@google.com> Cc: Kees Cook <kees@kernel.org> Cc: Liam Howlett <liam.howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2025-07-09 22:42:11 -07:00
..
crypto/chacha20-s390	crypto: lib/chacha - strongly type the ChaCha state	2025-05-12 13:32:53 +08:00
cxl	Merge branch 'for-6.16/cxl-features-ras' into cxl-for-next	2025-05-23 13:26:24 -07:00
fault-injection
ktest	ktest: Fix Test Failures Due to Missing LOG_FILE Directories	2025-03-27 09:34:00 -04:00
kunit	Revert "kunit: configs: Enable CONFIG_INIT_STACK_ALL_PATTERN in all_tests"	2025-06-03 11:20:21 +02:00
memblock	memblock: add MEMBLOCK_RSRV_KERN flag	2025-05-12 23:50:38 -07:00
nvdimm
radix-tree	maple_tree: add sufficient height	2025-05-11 17:48:29 -07:00
rbtree	lib/interval_tree: add test case for span iteration	2025-03-17 12:17:01 -07:00
scatterlist
selftests	selftests: mm: add shmem collapse as a default test item	2025-07-09 22:42:09 -07:00
shared	test suite: use %zu to print size_t	2025-04-11 17:32:35 -07:00
vma	mm/vma: use vmg->target to specify target VMA for new VMA merge	2025-07-09 22:42:11 -07:00
vsock	vsock/test: Add test for an unexpectedly lingering close()	2025-05-27 11:05:22 +02:00