archives/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-03-08 05:24:39 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions
linux/mm
History
Matthew Wilcox (Oracle) 53fbef56e0 mm: introduce memdesc_flags_t 
Patch series "Add and use memdesc_flags_t".

At some point struct page will be separated from struct slab and struct
folio.  This is a step towards that by introducing a type for the 'flags'
word of all three structures.  This gives us a certain amount of type
safety by establishing that some of these unsigned longs are different
from other unsigned longs in that they contain things like node ID,
section number and zone number in the upper bits.  That lets us have
functions that can be easily called by anyone who has a slab, folio or
page (but not easily by anyone else) to get the node or zone.

There's going to be some unusual merge problems with this as some odd bits
of the kernel decide they want to print out the flags value or something
similar by writing page->flags and now they'll need to write page->flags.f
instead.  That's most of the churn here.  Maybe we should be removing
these things from the debug output?


This patch (of 11):

Wrap the unsigned long flags in a typedef.  In upcoming patches, this will
provide a strong hint that you can't just pass a random unsigned long to
functions which take this as an argument.

[willy@infradead.org: s/flags/flags.f/ in several architectures]
  Link: https://lkml.kernel.org/r/aKMgPRLD-WnkPxYm@casper.infradead.org
[nicola.vetrini@gmail.com: mips: fix compilation error]
  Link: https://lore.kernel.org/lkml/CA+G9fYvkpmqGr6wjBNHY=dRp71PLCoi2341JxOudi60yqaeUdg@mail.gmail.com/
  Link: https://lkml.kernel.org/r/20250825214245.1838158-1-nicola.vetrini@gmail.com
Link: https://lkml.kernel.org/r/20250805172307.1302730-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20250805172307.1302730-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Zi Yan <ziy@nvidia.com>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-09-13 16:55:07 -07:00
..
damon mm/damon/Kconfig: make DAMON_STAT_ENABLED_DEFAULT depend on DAMON_STAT 2025-09-13 16:55:07 -07:00
kasan mm/kasan/init.c: remove unnecessary pointer variables 2025-09-13 16:54:48 -07:00
kfence kfence: Remove mention of PG_slab 2025-07-23 11:55:22 +02:00
kmsan kmsan: test: add module description 2025-06-05 22:02:25 -07:00
backing-dev.c mm: replace (20 - PAGE_SHIFT) with common macros for pages<->MB conversion 2025-09-13 16:54:42 -07:00
balloon_compaction.c mm/migrate: fix NULL movable_ops if CONFIG_ZSMALLOC=m 2025-08-19 16:35:57 -07:00
bootmem_info.c mm/sparse: allow for alternate vmemmap section init at boot 2025-03-16 22:06:27 -07:00
cma.c mm: cma: simplify cma_debug_show_areas() 2025-07-24 19:12:36 -07:00
cma.h mm: cma: set early_pfn and bitmap as a union in cma_memrange 2025-05-22 14:55:36 -07:00
cma_debug.c mm: cma: simplify cma_maxchunk_get() 2025-07-24 19:12:36 -07:00
cma_sysfs.c mm/cma: export total and free number of pages for CMA areas 2025-03-16 22:06:24 -07:00
compaction.c mm: rename PG_isolated to PG_movable_ops_isolated 2025-07-13 16:38:30 -07:00
debug.c mm: convert core mm to mm_flags_*() accessors 2025-09-13 16:54:56 -07:00
debug_page_alloc.c mm/debug_page_alloc: improve error message for invalid guardpage minorder 2025-05-12 23:50:38 -07:00
debug_page_ref.c
debug_vm_pgtable.c mm/debug_vm_pgtable: clear page table entries at destroy_args() 2025-08-19 16:35:54 -07:00
dmapool.c docs: dma-api: replace consistent with coherent 2025-07-01 13:25:36 -06:00
dmapool_test.c
early_ioremap.c mm/early_ioremap: add null pointer checks to prevent NULL-pointer dereference 2025-01-13 22:40:59 -08:00
execmem.c mm: correct type for vmalloc vm_flags fields 2025-08-02 12:06:13 -07:00
fadvise.c fdget(), trivial conversions 2024-11-03 01:28:06 -05:00
fail_page_alloc.c
failslab.c
filemap.c mm: introduce memdesc_flags_t 2025-09-13 16:55:07 -07:00
folio-compat.c mm: Remove grab_cache_page_write_begin() 2025-03-04 17:02:25 +00:00
gup.c mm: convert core mm to mm_flags_*() accessors 2025-09-13 16:54:56 -07:00
gup_test.c
gup_test.h
highmem.c
hmm.c mm/hmm: move pmd_to_hmm_pfn_flags() to the respective #ifdeffery 2025-07-19 18:59:53 -07:00
huge_memory.c mm: introduce memdesc_flags_t 2025-09-13 16:55:07 -07:00
hugetlb.c mm/page_owner: convert set_page_owner_migrate_reason() to folios 2025-07-19 18:59:57 -07:00
hugetlb_cgroup.c page_counter: track failcnt only for legacy cgroups 2025-03-17 00:05:35 -07:00
hugetlb_cma.c mm/hugetlb: use separate nodemask for bootmem allocations 2025-05-12 23:50:35 -07:00
hugetlb_cma.h mm/hugetlb: move hugetlb CMA code in to its own file 2025-03-16 22:06:31 -07:00
hugetlb_vmemmap.c mm/pagewalk: split walk_page_range_novma() into kernel/user parts 2025-07-09 22:42:05 -07:00
hugetlb_vmemmap.h mm/hugetlb: do pre-HVO for bootmem allocated pages 2025-03-16 22:06:29 -07:00
hwpoison-inject.c
init-mm.c mm: replace vm_lock and detached flag with a reference count 2025-03-16 22:06:20 -07:00
internal.h Significant patch series in this pull request: 2025-08-05 16:02:07 +03:00
interval_tree.c
ioremap.c mm/ioremap: pass pgprot_t to ioremap_prot() instead of unsigned long 2025-03-16 22:06:23 -07:00
Kconfig mm: add persistent huge zero folio 2025-09-13 16:54:54 -07:00
Kconfig.debug mm: rename GENERIC_PTDUMP and PTDUMP_CORE 2025-03-17 00:05:32 -07:00
khugepaged.c mm/huge_memory: convert "tva_flags" to "enum tva_type" 2025-09-13 16:55:05 -07:00
kmemleak.c mm: fix possible deadlock in kmemleak 2025-09-01 17:11:37 -07:00
ksm.c mm: convert core mm to mm_flags_*() accessors 2025-09-13 16:54:56 -07:00
list_lru.c mm, list_lru: refactor the locking code 2025-07-09 22:41:56 -07:00
maccess.c mm: unexport globally copy_to_kernel_nofault 2025-07-09 22:42:22 -07:00
madvise.c mm/mseal: small cleanups 2025-08-02 12:06:09 -07:00
Makefile mm: remove mm/io-mapping.c 2025-08-02 12:06:10 -07:00
mapping_dirty_helpers.c mm: remove redundant pXd_devmap calls 2025-07-09 22:42:17 -07:00
memblock.c memblock: fix kernel-doc for MEMBLOCK_RSRV_NOINIT 2025-08-26 10:47:03 +03:00
memcontrol-v1.c memcg: make count_memcg_events re-entrant safe against irqs 2025-05-22 14:55:38 -07:00
memcontrol-v1.h memcg: move do_memsw_account() to CONFIG_MEMCG_V1 2025-03-21 22:03:11 -07:00
memcontrol.c memcg: optimize exit to user space 2025-09-13 16:55:01 -07:00
memfd.c mm/memfd: replace deprecated strcpy() with memcpy() in alloc_name() 2025-07-19 18:59:57 -07:00
memory-failure.c mm: introduce memdesc_flags_t 2025-09-13 16:55:07 -07:00
memory-tiers.c mm,memory-tiers: use node-notifier instead of memory-notifier 2025-07-13 16:38:15 -07:00
memory.c mm/huge_memory: respect MADV_COLLAPSE with PR_THP_DISABLE_EXCEPT_ADVISED 2025-09-13 16:55:05 -07:00
memory_hotplug.c mm: rename __PageMovable() to page_has_movable_ops() 2025-07-13 16:38:29 -07:00
mempolicy.c mm: split folio_pte_batch() into folio_pte_batch() and folio_pte_batch_flags() 2025-07-19 18:59:45 -07:00
mempool.c mm: mempool: fix crash in mempool_free() for zero-minimum pools 2025-08-02 12:06:13 -07:00
memremap.c mm/page_alloc: add support for initializing pageblock as isolated 2025-07-13 16:38:17 -07:00
memtest.c
migrate.c treewide: remove MIGRATEPAGE_SUCCESS 2025-09-13 16:54:50 -07:00
migrate_device.c treewide: remove MIGRATEPAGE_SUCCESS 2025-09-13 16:54:50 -07:00
mincore.c mm/mincore: use a helper for checking the swap cache 2025-09-13 16:54:49 -07:00
mlock.c mm: split folio_pte_batch() into folio_pte_batch() and folio_pte_batch_flags() 2025-07-19 18:59:45 -07:00
mm_init.c mm/page_alloc: add support for initializing pageblock as isolated 2025-07-13 16:38:17 -07:00
mm_slot.h
mmap.c mm: convert core mm to mm_flags_*() accessors 2025-09-13 16:54:56 -07:00
mmap_lock.c mm: change vma_start_read() to drop RCU lock on failure 2025-09-13 16:54:43 -07:00
mmu_gather.c mm: remove redundant __GFP_NOWARN 2025-09-13 16:54:58 -07:00
mmu_notifier.c Update Christoph's Email address and make it consistent 2025-05-12 23:50:31 -07:00
mmzone.c mm: introduce memdesc_flags_t 2025-09-13 16:55:07 -07:00
mprotect.c mm: pass page directly instead of using folio_page 2025-08-11 23:00:59 -07:00
mremap.c mm/mremap: fix WARN with uffd that has remap events disabled 2025-08-19 16:35:57 -07:00
mseal.c mm/mseal: rework mseal apply logic 2025-08-02 12:06:09 -07:00
msync.c
nommu.c mm/nommu: convert kobjsize() to folios 2025-09-13 16:54:46 -07:00
numa.c mm/numa: remove unnecessary local variable in alloc_node_data() 2025-05-12 23:50:38 -07:00
numa_emulation.c mm: numa,memblock: Use SZ_1M macro to denote bytes to MB conversion 2025-08-20 16:31:23 +03:00
numa_memblks.c mm: numa,memblock: Use SZ_1M macro to denote bytes to MB conversion 2025-08-20 16:31:23 +03:00
oom_kill.c mm: convert core mm to mm_flags_*() accessors 2025-09-13 16:54:56 -07:00
page-writeback.c mm, vmstat: remove the NR_WRITEBACK_TEMP node_stat_item counter 2025-07-19 18:59:47 -07:00
page_alloc.c mm: introduce memdesc_flags_t 2025-09-13 16:55:07 -07:00
page_counter.c page_counter: track failcnt only for legacy cgroups 2025-03-17 00:05:35 -07:00
page_ext.c mm,page_ext: derive the node from the pfn 2025-07-13 16:38:16 -07:00
page_frag_cache.c mm/page_alloc: export free_frozen_pages() instead of free_unref_page() 2025-01-13 22:40:31 -08:00
page_idle.c sysfs: treewide: switch back to attribute_group::bin_attrs 2025-06-17 10:44:15 +02:00
page_io.c mm: stop passing a writeback_control structure to swap_writeout 2025-07-09 22:41:58 -07:00
page_isolation.c mm/page_isolation: drop __folio_test_movable() check for large folios 2025-07-13 16:38:29 -07:00
page_owner.c mm/page_owner: convert set_page_owner_migrate_reason() to folios 2025-07-19 18:59:57 -07:00
page_poison.c
page_reporting.c
page_reporting.h
page_table_check.c mm/page_table_check: Batch-check pmds/puds just like ptes 2025-05-09 13:43:07 +01:00
page_vma_mapped.c mm: remove redundant pXd_devmap calls 2025-07-09 22:42:17 -07:00
pagewalk.c mm: introduce and use vm_normal_page_pud() 2025-09-13 16:54:52 -07:00
percpu-internal.h
percpu-km.c
percpu-stats.c mm: remove outdated filename comment in percpu-stats.c 2025-07-13 16:38:23 -07:00
percpu-vm.c
percpu.c mm: introduce and use {pgd,p4d}_populate_kernel() 2025-08-27 22:45:44 -07:00
pgalloc-track.h
pgtable-generic.c mm: remove redundant pXd_devmap calls 2025-07-09 22:42:17 -07:00
process_vm_access.c mm: refactor mm_access() to not return NULL 2024-11-05 16:56:23 -08:00
pt_reclaim.c mm: pgtable: reclaim empty PTE page in madvise(MADV_DONTNEED) 2025-01-13 22:40:48 -08:00
ptdump.c mm/ptdump: take the memory hotplug lock inside ptdump_walk_pgd() 2025-07-09 22:42:20 -07:00
readahead.c readahead: use folio_nr_pages() instead of shift operation 2025-07-19 18:59:53 -07:00
rmap.c mm: remove redundant __GFP_NOWARN 2025-09-13 16:54:58 -07:00
rodata_test.c mm/rodata_test: verify test data is unchanged, rather than non-zero 2025-01-13 22:40:38 -08:00
secretmem.c Summary of significant series in this pull request: 2025-07-31 14:57:54 -07:00
shmem.c mm/huge_memory: respect MADV_COLLAPSE with PR_THP_DISABLE_EXCEPT_ADVISED 2025-09-13 16:55:05 -07:00
shmem_quota.c
show_mem.c mm, vmstat: remove the NR_WRITEBACK_TEMP node_stat_item counter 2025-07-19 18:59:47 -07:00
shrinker.c mm: shrinker: avoid memleak in alloc_shrinker_info 2024-10-31 20:27:04 -07:00
shrinker_debug.c mm/shrinker: fix name consistency issue in shrinker_debugfs_rename() 2025-03-17 00:05:40 -07:00
shuffle.c
shuffle.h
slab.h slab: Add SL_pfmemalloc flag 2025-06-18 13:06:26 +02:00
slab_common.c Update Christoph's Email address and make it consistent 2025-05-12 23:50:31 -07:00
slub.c mm/slub: allow to set node and align in k[v]realloc 2025-09-13 16:54:45 -07:00
sparse-vmemmap.c mm: introduce and use {pgd,p4d}_populate_kernel() 2025-08-27 22:45:44 -07:00
sparse.c mm: fix accounting of memmap pages 2025-08-27 22:45:43 -07:00
swap.c mm: introduce memdesc_flags_t 2025-09-13 16:55:07 -07:00
swap.h mm/mincore, swap: consolidate swap cache checking for mincore 2025-09-13 16:54:49 -07:00
swap_cgroup.c mm: swap_cgroup: remove double initialization of locals 2025-03-17 22:06:58 -07:00
swap_state.c mm/mincore, swap: consolidate swap cache checking for mincore 2025-09-13 16:54:49 -07:00
swapfile.c mm/swapfile.c: introduce function alloc_swap_scan_list() 2025-09-13 16:55:00 -07:00
truncate.c - The 2 patch series "zram: support algorithm-specific parameters" from 2025-06-02 16:00:26 -07:00
usercopy.c mm: security: Check early if HARDENED_USERCOPY is enabled 2025-02-28 11:51:31 -08:00
userfaultfd.c userfaultfd: opportunistic TLB-flush batching for present pages in MOVE 2025-09-13 16:55:00 -07:00
util.c mm: convert core mm to mm_flags_*() accessors 2025-09-13 16:54:56 -07:00
vma.c Significant patch series in this pull request: 2025-08-05 16:02:07 +03:00
vma.h mm: fix typos in VMA comments 2025-09-13 16:55:02 -07:00
vma_exec.c mm/vma: use vmg->target to specify target VMA for new VMA merge 2025-07-09 22:42:11 -07:00
vma_init.c mm: fix typos in VMA comments 2025-09-13 16:55:02 -07:00
vma_internal.h mm/vma: move brk() internals to mm/vma.c 2025-01-13 22:40:42 -08:00
vmalloc.c mm: remove redundant __GFP_NOWARN 2025-09-13 16:54:58 -07:00
vmpressure.c memcg: convert memcg->socket_pressure to u64 2025-07-24 19:12:32 -07:00
vmscan.c mm: introduce memdesc_flags_t 2025-09-13 16:55:07 -07:00
vmstat.c mm: memory-tiering: fix PGPROMOTE_CANDIDATE counting 2025-09-13 16:54:42 -07:00
workingset.c mm: introduce memdesc_flags_t 2025-09-13 16:55:07 -07:00
zpdesc.h mm: convert "movable" flag in page->mapping to a page flag 2025-07-13 16:38:30 -07:00
zpool.c zsmalloc: prefer the the original page's node for compressed data 2025-05-11 17:48:06 -07:00
zsmalloc.c treewide: remove MIGRATEPAGE_SUCCESS 2025-09-13 16:54:50 -07:00
zswap.c mm/zswap: store <PAGE_SIZE compression failed page as-is 2025-09-13 16:54:59 -07:00