Vishal Moola (Oracle) 997f0ecb11 mm/memory: change vmf_anon_prepare() to be non-static ... Patch series "Handle hugetlb faults under the VMA lock", v2. It is generally safe to handle hugetlb faults under the VMA lock. The only time this is unsafe is when no anon_vma has been allocated to this vma yet, so we can use vmf_anon_prepare() instead of anon_vma_prepare() to bailout if necessary. This should only happen for the first hugetlb page in the vma. Additionally, this patchset begins to use struct vm_fault within hugetlb_fault(). This works towards cleaning up hugetlb code, and should significantly reduce the number of arguments passed to functions. The last patch in this series may cause ltp hugemmap10 to "fail". This is because vmf_anon_prepare() may bailout with no anon_vma under the VMA lock after allocating a folio for the hugepage. In free_huge_folio(), this folio is completely freed on bailout iff there is a surplus of hugetlb pages. This will remove a folio off the freelist and decrement the number of hugepages while ltp expects these counters to remain unchanged on failure. The rest of the ltp testcases pass. This patch (of 2): In order to handle hugetlb faults under the VMA lock, hugetlb can use vmf_anon_prepare() to ensure we can safely prepare an anon_vma. Change it to be a non-static function so it can be used within hugetlb as well. Link: https://lkml.kernel.org/r/20240221234732.187629-6-vishal.moola@gmail.com Link: https://lkml.kernel.org/r/20240221234732.187629-2-vishal.moola@gmail.com Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2024-03-04 17:01:15 -08:00
..
damon	mm/damon/reclaim: implement memory PSI-driven quota self-tuning	2024-02-23 17:48:30 -08:00
kasan	merge mm-hotfixes-stable into mm-nonmm-stable to pick up stackdepot changes	2024-02-23 17:28:43 -08:00
kfence	KFENCE: cleanup kfence_guarded_alloc() after CONFIG_SLAB removal	2023-12-05 11:17:58 +01:00
kmsan	mm: kmsan: remove runtime checks from kmsan_unpoison_memory()	2024-02-22 10:24:41 -08:00
backing-dev.c	blk-wbt: Fix detection of dirty-throttled tasks	2024-02-06 09:44:03 -07:00
balloon_compaction.c
bootmem_info.c	bootmem: use kmemleak_free_part_phys in put_page_bootmem	2023-10-25 16:47:13 -07:00
cma_debug.c
cma_sysfs.c	mm/cma: add sysfs file 'release_pages_success'	2024-02-22 10:24:57 -08:00
cma.c	mm/cma: add sysfs file 'release_pages_success'	2024-02-22 10:24:57 -08:00
cma.h	mm/cma: add sysfs file 'release_pages_success'	2024-02-22 10:24:57 -08:00
compaction.c	mm/compaction: optimize >0 order folio compaction with free page split.	2024-02-23 17:48:33 -08:00
debug_page_alloc.c	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
debug_page_ref.c
debug_vm_pgtable.c	mm/debug_vm_pgtable: fix BUG_ON with pud advanced test	2024-02-23 17:27:13 -08:00
debug.c
dmapool_test.c
dmapool.c	mm/mempool/dmapool: remove CONFIG_DEBUG_SLAB ifdefs	2023-12-05 11:17:58 +01:00
early_ioremap.c
fadvise.c
fail_page_alloc.c
failslab.c
filemap.c	merge mm-hotfixes-stable into mm-nonmm-stable to pick up stackdepot changes	2024-02-23 17:28:43 -08:00
folio-compat.c	mm: remove page_add_new_anon_rmap and lru_cache_add_inactive_or_unevictable	2023-12-29 11:58:27 -08:00
gup_test.c
gup_test.h
gup.c	mm: convert page_try_share_anon_rmap() to folio_try_share_anon_rmap_[pte|pmd]()	2023-12-29 11:58:56 -08:00
highmem.c	x86/kexec: use pr_err() instead of kexec_dprintk() when an error occurs	2023-12-29 12:22:28 -08:00
hmm.c
huge_memory.c	userfaultfd: use per-vma locks in userfaultfd operations	2024-02-22 15:27:20 -08:00
hugetlb_cgroup.c	mm, hugetlb: remove HUGETLB_CGROUP_MIN_ORDER	2023-10-18 14:34:17 -07:00
hugetlb_vmemmap.c	mm: hugetlb_vmemmap: move mmap lock to vmemmap_remap_range()	2023-12-12 10:57:08 -08:00
hugetlb_vmemmap.h	mm: hugetlb_vmemmap: fix reference to nonexistent file	2023-10-25 16:47:14 -07:00
hugetlb.c	mm/hugetlb: move page order check inside hugetlb_cma_reserve()	2024-02-22 10:24:59 -08:00
hwpoison-inject.c
init-mm.c	mm: Deprecate pasid field	2023-12-12 10:11:32 +01:00
internal.h	mm/memory: change vmf_anon_prepare() to be non-static	2024-03-04 17:01:15 -08:00
interval_tree.c
io-mapping.c
ioremap.c
Kconfig	Introduce cpu_dcache_is_aliasing() across all architectures	2024-02-22 15:27:19 -08:00
Kconfig.debug	mm/slab: remove CONFIG_SLAB from all Kconfig and Makefile	2023-12-05 11:14:40 +01:00
khugepaged.c	mm/khugepaged: bypassing unnecessary scans with MMF_DISABLE_THP check	2024-02-23 17:48:25 -08:00
kmemleak.c	kmemleak: avoid RCU stalls when freeing metadata for per-CPU pointers	2023-12-12 10:57:07 -08:00
ksm.c	mm: convert page_try_share_anon_rmap() to folio_try_share_anon_rmap_[pte|pmd]()	2023-12-29 11:58:56 -08:00
list_lru.c	mm/zswap: stop lru list shrinking when encounter warm region	2024-02-22 10:24:54 -08:00
maccess.c
madvise.c	madvise:madvise_cold_or_pageout_pte_range(): allow split while folio_estimated_sharers = 0	2024-02-23 17:48:34 -08:00
Makefile	mm/slab: remove CONFIG_SLAB from all Kconfig and Makefile	2023-12-05 11:14:40 +01:00
mapping_dirty_helpers.c	mm: fix clean_record_shared_mapping_range kernel-doc	2023-08-24 16:20:30 -07:00
memblock.c	mm/memblock: add MEMBLOCK_RSRV_NOINIT into flagname[] array	2024-02-20 14:20:49 -08:00
memcontrol.c	mm: memcg: use larger batches for proactive reclaim	2024-02-22 10:24:52 -08:00
memfd.c	memfd: drop warning for missing exec-related flags	2023-10-04 10:32:22 -07:00
memory_hotplug.c	mm/memory_hotplug: export mhp_supports_memmap_on_memory()	2024-02-22 10:24:40 -08:00
memory-failure.c	mm/memory-failure: fix crash in split_huge_page_to_list from soft_offline_page	2024-02-07 21:20:34 -08:00
memory-tiers.c	mm/demotion: print demotion targets	2024-02-22 10:24:55 -08:00
memory.c	mm/memory: change vmf_anon_prepare() to be non-static	2024-03-04 17:01:15 -08:00
mempolicy.c	mm/mempolicy: protect task interleave functions with tsk->mems_allowed_seq	2024-02-22 10:24:47 -08:00
mempool.c	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
memremap.c	mm: remove stale example from comment	2023-12-29 11:58:26 -08:00
memtest.c	mm: memtest: convert to memtest_report_meminfo()	2023-08-21 13:37:47 -07:00
migrate_device.c	mm: convert page_try_share_anon_rmap() to folio_try_share_anon_rmap_[pte|pmd]()	2023-12-29 11:58:56 -08:00
migrate.c	merge mm-hotfixes-stable into mm-nonmm-stable to pick up stackdepot changes	2024-02-23 17:28:43 -08:00
mincore.c
mlock.c	mm: mlock: avoid folio_within_range() on KSM pages	2023-10-25 16:47:14 -07:00
mm_init.c	efi: disable mirror feature during crashkernel	2024-01-12 15:20:47 -08:00
mm_slot.h
mmap_lock.c
mmap.c	mm/mmap: pass vma to vma_merge()	2024-02-22 10:24:52 -08:00
mmu_gather.c	mm/mmu_gather: improve cond_resched() handling with large folios and expensive page freeing	2024-02-22 15:27:17 -08:00
mmu_notifier.c
mmzone.c	zswap: shrink zswap pool based on memory pressure	2023-12-12 10:57:02 -08:00
mprotect.c	mprotect: use pfn_swap_entry_folio	2024-02-21 16:00:03 -08:00
mremap.c	mm: abstract VMA merge and extend into vma_merge_extend() helper	2023-10-18 14:34:18 -07:00
msync.c
nommu.c	mm/vmalloc: remove vmap_area_list	2024-02-23 17:48:19 -08:00
oom_kill.c	mm, oom:dump_tasks add rss detailed information printing	2023-12-10 16:51:53 -08:00
page_alloc.c	mm/page_alloc: make check_new_page() return bool	2024-03-04 17:01:15 -08:00
page_counter.c
page_ext.c
page_idle.c
page_io.c	zswap: memcontrol: implement zswap writeback disabling	2023-12-29 20:22:11 -08:00
page_isolation.c	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
page_owner.c	mm,page_owner: filter out stacks by a threshold	2024-02-23 17:48:17 -08:00
page_poison.c	mm/page_poison: replace kmap_atomic() with kmap_local_page()	2023-12-10 16:51:50 -08:00
page_reporting.c	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
page_reporting.h
page_table_check.c	mm: convert page_table_check_pte_set() to page_table_check_ptes_set()	2023-08-24 16:20:18 -07:00
page_vma_mapped.c	mm: thp: introduce multi-size THP sysfs interface	2023-12-20 14:48:12 -08:00
page-writeback.c	writeback: remove a use of write_cache_pages() from do_writepages()	2024-02-23 17:48:38 -08:00
pagewalk.c	mm: pagewalk: assert write mmap lock only for walking the user page tables	2023-12-10 16:51:53 -08:00
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c	mm: Introduce flush_cache_vmap_early()	2023-12-14 00:23:17 -08:00
pgalloc-track.h
pgtable-generic.c
process_vm_access.c	mm: fix process_vm_rw page counts	2023-12-10 16:51:39 -08:00
ptdump.c	mm: ptdump: add check_wx_pages debugfs attribute	2024-02-22 10:24:47 -08:00
readahead.c	readahead: use ilog2 instead of a while loop in page_cache_ra_order()	2024-02-22 10:24:38 -08:00
rmap.c	rmap: replace two calls to compound_order with folio_order	2024-02-22 15:27:20 -08:00
rodata_test.c
secretmem.c	mm/secretmem: use a folio in secretmem_fault()	2023-08-21 13:38:02 -07:00
shmem_quota.c
shmem.c	shmem: properly report quota mount options	2024-02-23 17:48:34 -08:00
show_mem.c	mm, treewide: introduce NR_PAGE_ORDERS	2024-01-08 15:27:15 -08:00
shrinker_debug.c	mm: shrinker: convert shrinker_rwsem to mutex	2023-10-04 10:32:26 -07:00
shrinker.c	mm: shrinker: use kvzalloc_node() from expand_one_shrinker_info()	2024-01-05 09:58:32 -08:00
shuffle.c
shuffle.h	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
slab_common.c	slub: use a folio in __kmalloc_large_node	2024-01-05 10:17:46 -08:00
slab.h	mm/slab: move kmalloc() functions from slab_common.c to slub.c	2023-12-06 11:57:21 +01:00
slub.c	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
sparse-vmemmap.c
sparse.c	mm/memory_hotplug: introduce MEM_PREPARE_ONLINE/MEM_FINISH_OFFLINE notifiers	2024-02-21 16:00:01 -08:00
swap_cgroup.c
swap_slots.c	mm/zswap: invalidate zswap entry when swap entry free	2024-02-22 10:24:54 -08:00
swap_state.c	mm/mmu_gather: add __tlb_remove_folio_pages()	2024-02-22 15:27:17 -08:00
swap.c	mm/mmu_gather: add __tlb_remove_folio_pages()	2024-02-22 15:27:17 -08:00
swap.h	mm/swap: fix race when skipping swapcache	2024-02-20 14:20:48 -08:00
swapfile.c	mm/swapfile:__swap_duplicate: drop redundant WRITE_ONCE on swap_map for err cases	2024-02-23 17:48:34 -08:00
truncate.c	fs: convert error_remove_page to error_remove_folio	2023-12-10 16:51:42 -08:00
usercopy.c
userfaultfd.c	userfaultfd: use per-vma locks in userfaultfd operations	2024-02-22 15:27:20 -08:00
util.c	mm/util.c: add byte count to __vm_enough_memory failure warning	2024-03-04 17:01:14 -08:00
vmalloc.c	mm: vmalloc: refactor vmalloc_dump_obj() function	2024-02-23 17:48:21 -08:00
vmpressure.c	eventfd: simplify eventfd_signal()	2023-11-28 14:08:38 +01:00
vmscan.c	mm/mglru: improve swappiness handling	2024-02-22 10:24:58 -08:00
vmstat.c	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
workingset.c	mm: ratelimit stat flush from workingset shrinker	2024-01-05 10:17:45 -08:00
z3fold.c	mm/z3fold: fix the comment for __encode_handle()	2024-02-23 17:48:31 -08:00
zbud.c
zpool.c
zsmalloc.c	mm/zsmalloc: remove get_zspage_mapping()	2024-02-23 17:48:32 -08:00
zswap.c	mm/zswap: change zswap_pool kref to percpu_ref	2024-03-04 17:01:13 -08:00