Suren Baghdasaryan 5e31275cc9 mm: add per-VMA lock and helper functions to control it ... Introduce per-VMA locking. The lock implementation relies on a per-vma and per-mm sequence counters to note exclusive locking: - read lock - (implemented by vma_start_read) requires the vma (vm_lock_seq) and mm (mm_lock_seq) sequence counters to differ. If they match then there must be a vma exclusive lock held somewhere. - read unlock - (implemented by vma_end_read) is a trivial vma->lock unlock. - write lock - (vma_start_write) requires the mmap_lock to be held exclusively and the current mm counter is assigned to the vma counter. This will allow multiple vmas to be locked under a single mmap_lock write lock (e.g. during vma merging). The vma counter is modified under exclusive vma lock. - write unlock - (vma_end_write_all) is a batch release of all vma locks held. It doesn't pair with a specific vma_start_write! It is done before exclusive mmap_lock is released by incrementing mm sequence counter (mm_lock_seq). - write downgrade - if the mmap_lock is downgraded to the read lock, all vma write locks are released as well (effectivelly same as write unlock). Link: https://lkml.kernel.org/r/20230227173632.3292573-13-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2023-04-05 20:02:57 -07:00
..
damon	mm/damon/sysfs: make more kobj_type structures constant	2023-04-05 19:42:59 -07:00
kasan	kasan: suppress recursive reports for HW_TAGS	2023-04-05 19:42:43 -07:00
kfence	mm: kfence: fix handling discontiguous page	2023-03-28 15:24:32 -07:00
kmsan	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
backing-dev.c	mm: add /sys/class/bdi/<bdi>/min_ratio_fine knob	2022-11-30 15:59:06 -08:00
balloon_compaction.c
bootmem_info.c
cma_debug.c
cma_sysfs.c	mm: cma: make kobj_type structure constant	2023-03-28 16:20:06 -07:00
cma.c	mm: move most of core MM initialization to mm/mm_init.c	2023-04-05 19:42:52 -07:00
cma.h
compaction.c	mm: compaction: fix the possible deadlock when isolating hugetlb pages	2023-04-05 19:42:50 -07:00
debug_page_ref.c
debug_vm_pgtable.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
debug.c	mm/debug: use %pGt to display page_type in dump_page()	2023-03-28 16:20:09 -07:00
dmapool_test.c	dmapool: add alloc/free performance test	2023-04-05 19:42:38 -07:00
dmapool.c	dmapool: create/destroy cleanup	2023-04-05 19:42:41 -07:00
early_ioremap.c
fadvise.c	mm: support POSIX_FADV_NOREUSE	2023-01-18 17:12:57 -08:00
failslab.c	mm: fix unexpected changes to {failslab|fail_page_alloc}.attr	2022-11-22 18:50:44 -08:00
filemap.c	mm: return an ERR_PTR from __filemap_get_folio	2023-04-05 19:42:42 -07:00
folio-compat.c	mm: return an ERR_PTR from __filemap_get_folio	2023-04-05 19:42:42 -07:00
frontswap.c
gup_test.c	mm/gup_test: free memory allocated via kvcalloc() using kvfree()	2022-12-15 16:37:48 -08:00
gup_test.h	mm/gup_test: start/stop/read functionality for PIN LONGTERM test	2022-11-08 17:37:15 -08:00
gup.c	mm/gup.c: fix typo in comments	2023-03-28 16:20:14 -07:00
highmem.c	highmem: fix kmap_to_page() for kmap_local_page() addresses	2022-10-12 18:51:51 -07:00
hmm.c	mm/hugetlb: make walk_hugetlb_range() safe to pmd unshare	2023-01-18 17:12:39 -08:00
huge_memory.c	mm: remove vmf_insert_pfn_xxx_prot() for huge page-table entries	2023-04-05 19:42:56 -07:00
hugetlb_cgroup.c	mm/hugetlb: increase use of folios in alloc_huge_page()	2023-02-13 15:54:27 -08:00
hugetlb_vmemmap.c	mm: prefer xxx_page() alloc/free functions for order-0 pages	2023-03-28 16:20:16 -07:00
hugetlb_vmemmap.h
hugetlb.c	mm: userfaultfd: combine 'mode' and 'wp_copy' arguments	2023-04-05 19:42:48 -07:00
hwpoison-inject.c	mm/hwpoison: add __init/__exit annotations to module init/exit funcs	2022-10-03 14:03:05 -07:00
init-mm.c	mm: add per-VMA lock and helper functions to control it	2023-04-05 20:02:57 -07:00
internal.h	mm: move vmalloc_init() declaration to mm/internal.h	2023-04-05 19:42:55 -07:00
interval_tree.c
io-mapping.c
ioremap.c
Kconfig	mm: introduce CONFIG_PER_VMA_LOCK	2023-04-05 20:02:56 -07:00
Kconfig.debug	mm: move KMEMLEAK's Kconfig items from lib to mm	2023-02-02 22:33:26 -08:00
khugepaged.c	mm/uffd: UFFD_FEATURE_WP_UNPOPULATED	2023-04-05 19:42:44 -07:00
kmemleak.c	lib/stackdepot, mm: rename stack_depot_want_early_init	2023-02-16 20:43:49 -08:00
ksm.c	mm: add tracepoints to ksm	2023-03-28 16:20:08 -07:00
list_lru.c
maccess.c	maccess: Fix writing offset in case of fault in strncpy_from_kernel_nofault()	2022-11-11 11:44:46 -08:00
madvise.c	- Daniel Verkamp has contributed a memfd series ("mm/memfd: add	2023-02-23 17:09:35 -08:00
Makefile	dmapool: add alloc/free performance test	2023-04-05 19:42:38 -07:00
mapping_dirty_helpers.c	mm/mmu_notifier: remove unused mmu_notifier_range_update_to_read_only export	2023-02-02 22:32:54 -08:00
memblock.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
memcontrol.c	mm: return an ERR_PTR from __filemap_get_folio	2023-04-05 19:42:42 -07:00
memfd.c	mm/memfd: add write seals when apply SEAL_EXEC to executable memfd	2023-01-18 17:12:37 -08:00
memory_hotplug.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
memory-failure.c	mm: memory-failure: directly use IS_ENABLED(CONFIG_HWPOISON_INJECT)	2023-03-28 16:20:17 -07:00
memory-tiers.c	memory tier: release the new_memtier in find_create_memory_tier()	2023-02-09 16:51:40 -08:00
memory.c	mm: hold the RCU read lock over calls to ->map_pages	2023-04-05 19:43:00 -07:00
mempolicy.c	mm: hugetlb: change to return bool for isolate_hugetlb()	2023-02-20 12:46:17 -08:00
mempool.c	mempool: do not use ksize() for poisoning	2022-11-30 15:58:41 -08:00
memremap.c	mm/memremap.c: fix outdated comment in devm_memremap_pages	2023-02-09 16:51:46 -08:00
memtest.c	mm/memtest: add results of early memtest to /proc/meminfo	2023-04-05 19:42:55 -07:00
migrate_device.c	mm: change to return bool for isolate_lru_page()	2023-02-20 12:46:17 -08:00
migrate.c	mm/migrate: drop pte_mkhuge() in remove_migration_pte()	2023-03-28 16:20:11 -07:00
mincore.c	mm: return an ERR_PTR from __filemap_get_folio	2023-04-05 19:42:42 -07:00
mlock.c	mm: introduce vm_flags_reset_once to replace WRITE_ONCE vm_flags updates	2023-02-09 16:51:41 -08:00
mm_init.c	mm: be less noisy during memory hotplug	2023-04-05 19:42:58 -07:00
mm_slot.h	mm: introduce common struct mm_slot	2022-10-03 14:02:43 -07:00
mmap_lock.c
mmap.c	mm/mmap/vma_merge: init cleanup, be explicit about the non-mergeable case	2023-04-05 19:42:58 -07:00
mmu_gather.c	mm: prefer xxx_page() alloc/free functions for order-0 pages	2023-03-28 16:20:16 -07:00
mmu_notifier.c	mm/mmu_notifier: remove unused mmu_notifier_range_update_to_read_only export	2023-02-02 22:32:54 -08:00
mmzone.c	mm: multi-gen LRU: groundwork	2022-09-26 19:46:09 -07:00
mprotect.c	mm/uffd: UFFD_FEATURE_WP_UNPOPULATED	2023-04-05 19:42:44 -07:00
mremap.c	mm/mremap: simplify vma expansion again	2023-04-05 19:42:50 -07:00
msync.c	mm/msync: use vma_find() instead of vma linked list	2022-09-26 19:46:25 -07:00
nommu.c	mm: vmalloc: convert vread() to vread_iter()	2023-04-05 19:42:57 -07:00
oom_kill.c	mm/mmu_notifier: remove unused mmu_notifier_range_update_to_read_only export	2023-02-02 22:32:54 -08:00
page_alloc.c	mm: move mem_init_print_info() to mm_init.c	2023-04-05 19:42:54 -07:00
page_counter.c
page_ext.c	mm/page_ext: init page_ext early if there are no deferred struct pages	2023-02-02 22:33:22 -08:00
page_idle.c	mm: page_idle: convert page idle to use a folio	2023-01-18 17:12:52 -08:00
page_io.c	- Daniel Verkamp has contributed a memfd series ("mm/memfd: add	2023-02-23 17:09:35 -08:00
page_isolation.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
page_owner.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
page_poison.c
page_reporting.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
page_reporting.h
page_table_check.c	mm/page_ext: do not allocate space for page_ext->flags if not needed	2023-02-02 22:33:11 -08:00
page_vma_mapped.c	mm/hugetlb: introduce hugetlb_walk()	2023-01-18 17:12:39 -08:00
page-writeback.c	mm,jfs: move write_one_page/folio_write_one to jfs	2023-03-28 16:20:14 -07:00
pagewalk.c	mm/hugetlb: introduce hugetlb_walk()	2023-01-18 17:12:39 -08:00
percpu-internal.h	mm: percpu: fix incorrect size in pcpu_obj_full_size()	2023-02-16 20:43:55 -08:00
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c	mm: memcontrol: rename memcg_kmem_enabled()	2023-02-16 20:43:56 -08:00
pgalloc-track.h
pgtable-generic.c	mm: add PTE pointer parameter to flush_tlb_fix_spurious_fault()	2023-03-28 16:20:12 -07:00
process_vm_access.c	use less confusing names for iov_iter direction initializers	2022-11-25 13:01:55 -05:00
ptdump.c
readahead.c	readahead: convert readahead_expand() to use a folio	2023-02-02 22:33:21 -08:00
rmap.c	mm/rmap: use atomic_try_cmpxchg in set_tlb_ubc_flush_pending	2023-03-28 16:20:09 -07:00
rodata_test.c	mm/rodata_test: use PAGE_ALIGNED() helper	2022-10-03 14:03:05 -07:00
secretmem.c	- Daniel Verkamp has contributed a memfd series ("mm/memfd: add	2023-02-23 17:09:35 -08:00
shmem.c	mm: userfaultfd: combine 'mode' and 'wp_copy' arguments	2023-04-05 19:42:48 -07:00
shrinker_debug.c	mm: shrinkers: convert shrinker_rwsem to mutex	2023-03-28 16:20:17 -07:00
shuffle.c	mm/shuffle: convert module_param_call to module_param_cb	2022-10-03 14:03:07 -07:00
shuffle.h	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
slab_common.c	mm/kasan: simplify and refine kasan_cache code	2023-01-18 17:12:55 -08:00
slab.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
slab.h	mm: move kmem_cache_init() declaration to mm/slab.h	2023-04-05 19:42:54 -07:00
slob.c	Merge branch 'slab/for-6.1/kmalloc_size_roundup' into slab/for-next	2022-09-29 11:30:55 +02:00
slub.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
sparse-vmemmap.c	mm/sparse-vmemmap: generalise vmemmap_populate_hugepages()	2022-12-11 18:12:12 -08:00
sparse.c	mm/sparse: fix "unused function 'pgdat_to_phys'" warning	2023-02-02 22:33:29 -08:00
swap_cgroup.c	mm: memcontrol: don't allocate cgroup swap arrays when memcg is disabled	2022-10-03 14:03:36 -07:00
swap_slots.c	mm/swap: convert put_swap_page() to put_swap_folio()	2022-10-03 14:02:46 -07:00
swap_state.c	mm: return an ERR_PTR from __filemap_get_folio	2023-04-05 19:42:42 -07:00
swap.c	- Daniel Verkamp has contributed a memfd series ("mm/memfd: add	2023-02-23 17:09:35 -08:00
swap.h	mm: remove the __swap_writepage return value	2023-02-02 22:33:33 -08:00
swapfile.c	mm: return an ERR_PTR from __filemap_get_folio	2023-04-05 19:42:42 -07:00
truncate.c	mm: return an ERR_PTR from __filemap_get_folio	2023-04-05 19:42:42 -07:00
usercopy.c	mm: use kstrtobool() instead of strtobool()	2022-11-30 15:58:45 -08:00
userfaultfd.c	mm: userfaultfd: add UFFDIO_CONTINUE_MODE_WP to install WP PTEs	2023-04-05 19:42:48 -07:00
util.c	mm: fix typo in __vm_enough_memory warning	2023-02-13 15:54:33 -08:00
vmalloc.c	mm: vmalloc: convert vread() to vread_iter()	2023-04-05 19:42:57 -07:00
vmpressure.c
vmscan.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
vmstat.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
workingset.c	swap_state: update shadow_nodes for anonymous page	2023-02-02 22:33:24 -08:00
z3fold.c	mm: remove PageMovable export	2023-01-18 17:12:57 -08:00
zbud.c	zpool: clean out dead code	2022-12-11 18:12:10 -08:00
zpool.c	zpool: clean out dead code	2022-12-11 18:12:10 -08:00
zsmalloc.c	zsmalloc: show per fullness group class stats	2023-03-28 16:20:12 -07:00
zswap.c	mm/zswap: try to avoid worst-case scenario on same element pages	2023-03-28 16:20:07 -07:00