linux-stable.git - Linux kernel stable tree

Age	Commit message (Collapse)	Author
14 days	mm: abstract reading sysctl_max_map_count, and READ_ONCE()	Lorenzo Stoakes (Oracle)
	Concurrent reads and writes of sysctl_max_map_count are possible, so we should READ_ONCE() and WRITE_ONCE(). The sysctl procfs logic already enforces WRITE_ONCE(), so abstract the read side with get_sysctl_max_map_count(). While we're here, also move the field to mm/internal.h and add the getter there since only mm interacts with it, there's no need for anybody else to have access. Finally, update the VMA userland tests to reflect the change. Link: https://lkml.kernel.org/r/0715259eb37cbdfde4f9e5db92a20ec7110a1ce5.1773249037.git.ljs@kernel.org Signed-off-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org> Reviewed-by: Pedro Falcato <pfalcato@suse.de> Cc: Jann Horn <jannh@google.com> Cc: Jianzhou Zhao <luckd0g@163.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-02-12	tools/testing/vma: separate VMA userland tests into separate files	Lorenzo Stoakes
	So far the userland VMA tests have been established as a rough expression of what's been possible. Adapt it into a more usable form by separating out tests and shared helper functions. Since we test functions that are declared statically in mm/vma.c, we make use of the trick of #include'ing kernel C files directly. In order for the tests to continue to function, we must therefore also this way into the tests/ directory. We try to keep as much shared logic actually modularised into a separate compilation unit in shared.c, however the merge_existing() and attach_vma() helpers rely on statically declared mm/vma.c functions so these must be declared in main.c. Link: https://lkml.kernel.org/r/a0455ccfe4fdcd1c962c64f76304f612e5662a4e.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Damien Le Moal <dlemoal@kernel.org> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Cc: Pedro Falcato <pfalcato@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>