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author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-24 04:09:35 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-24 04:09:35 +0300 |
commit | 3822a7c40997dc86b1458766a3f146d62393f084 (patch) | |
tree | 4473720ecbfaabeedfe58484425be77d0f89f736 /Documentation/translations/zh_CN | |
parent | e4bc15889506723d7b93c053ad4a75cd58248d74 (diff) | |
parent | f9366f4c2a29d14f5992b195e268240c2deb116e (diff) | |
download | linux-3822a7c40997dc86b1458766a3f146d62393f084.tar.xz |
Merge tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
F_SEAL_EXEC") which permits the setting of the memfd execute bit at
memfd creation time, with the option of sealing the state of the X
bit.
- Peter Xu adds a patch series ("mm/hugetlb: Make huge_pte_offset()
thread-safe for pmd unshare") which addresses a rare race condition
related to PMD unsharing.
- Several folioification patch serieses from Matthew Wilcox, Vishal
Moola, Sidhartha Kumar and Lorenzo Stoakes
- Johannes Weiner has a series ("mm: push down lock_page_memcg()")
which does perform some memcg maintenance and cleanup work.
- SeongJae Park has added DAMOS filtering to DAMON, with the series
"mm/damon/core: implement damos filter".
These filters provide users with finer-grained control over DAMOS's
actions. SeongJae has also done some DAMON cleanup work.
- Kairui Song adds a series ("Clean up and fixes for swap").
- Vernon Yang contributed the series "Clean up and refinement for maple
tree".
- Yu Zhao has contributed the "mm: multi-gen LRU: memcg LRU" series. It
adds to MGLRU an LRU of memcgs, to improve the scalability of global
reclaim.
- David Hildenbrand has added some userfaultfd cleanup work in the
series "mm: uffd-wp + change_protection() cleanups".
- Christoph Hellwig has removed the generic_writepages() library
function in the series "remove generic_writepages".
- Baolin Wang has performed some maintenance on the compaction code in
his series "Some small improvements for compaction".
- Sidhartha Kumar is doing some maintenance work on struct page in his
series "Get rid of tail page fields".
- David Hildenbrand contributed some cleanup, bugfixing and
generalization of pte management and of pte debugging in his series
"mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE on all architectures with
swap PTEs".
- Mel Gorman and Neil Brown have removed the __GFP_ATOMIC allocation
flag in the series "Discard __GFP_ATOMIC".
- Sergey Senozhatsky has improved zsmalloc's memory utilization with
his series "zsmalloc: make zspage chain size configurable".
- Joey Gouly has added prctl() support for prohibiting the creation of
writeable+executable mappings.
The previous BPF-based approach had shortcomings. See "mm: In-kernel
support for memory-deny-write-execute (MDWE)".
- Waiman Long did some kmemleak cleanup and bugfixing in the series
"mm/kmemleak: Simplify kmemleak_cond_resched() & fix UAF".
- T.J. Alumbaugh has contributed some MGLRU cleanup work in his series
"mm: multi-gen LRU: improve".
- Jiaqi Yan has provided some enhancements to our memory error
statistics reporting, mainly by presenting the statistics on a
per-node basis. See the series "Introduce per NUMA node memory error
statistics".
- Mel Gorman has a second and hopefully final shot at fixing a CPU-hog
regression in compaction via his series "Fix excessive CPU usage
during compaction".
- Christoph Hellwig does some vmalloc maintenance work in the series
"cleanup vfree and vunmap".
- Christoph Hellwig has removed block_device_operations.rw_page() in
ths series "remove ->rw_page".
- We get some maple_tree improvements and cleanups in Liam Howlett's
series "VMA tree type safety and remove __vma_adjust()".
- Suren Baghdasaryan has done some work on the maintainability of our
vm_flags handling in the series "introduce vm_flags modifier
functions".
- Some pagemap cleanup and generalization work in Mike Rapoport's
series "mm, arch: add generic implementation of pfn_valid() for
FLATMEM" and "fixups for generic implementation of pfn_valid()"
- Baoquan He has done some work to make /proc/vmallocinfo and
/proc/kcore better represent the real state of things in his series
"mm/vmalloc.c: allow vread() to read out vm_map_ram areas".
- Jason Gunthorpe rationalized the GUP system's interface to the rest
of the kernel in the series "Simplify the external interface for
GUP".
- SeongJae Park wishes to migrate people from DAMON's debugfs interface
over to its sysfs interface. To support this, we'll temporarily be
printing warnings when people use the debugfs interface. See the
series "mm/damon: deprecate DAMON debugfs interface".
- Andrey Konovalov provided the accurately named "lib/stackdepot: fixes
and clean-ups" series.
- Huang Ying has provided a dramatic reduction in migration's TLB flush
IPI rates with the series "migrate_pages(): batch TLB flushing".
- Arnd Bergmann has some objtool fixups in "objtool warning fixes".
* tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (505 commits)
include/linux/migrate.h: remove unneeded externs
mm/memory_hotplug: cleanup return value handing in do_migrate_range()
mm/uffd: fix comment in handling pte markers
mm: change to return bool for isolate_movable_page()
mm: hugetlb: change to return bool for isolate_hugetlb()
mm: change to return bool for isolate_lru_page()
mm: change to return bool for folio_isolate_lru()
objtool: add UACCESS exceptions for __tsan_volatile_read/write
kmsan: disable ftrace in kmsan core code
kasan: mark addr_has_metadata __always_inline
mm: memcontrol: rename memcg_kmem_enabled()
sh: initialize max_mapnr
m68k/nommu: add missing definition of ARCH_PFN_OFFSET
mm: percpu: fix incorrect size in pcpu_obj_full_size()
maple_tree: reduce stack usage with gcc-9 and earlier
mm: page_alloc: call panic() when memoryless node allocation fails
mm: multi-gen LRU: avoid futile retries
migrate_pages: move THP/hugetlb migration support check to simplify code
migrate_pages: batch flushing TLB
migrate_pages: share more code between _unmap and _move
...
Diffstat (limited to 'Documentation/translations/zh_CN')
-rw-r--r-- | Documentation/translations/zh_CN/mm/hugetlbfs_reserv.rst | 14 | ||||
-rw-r--r-- | Documentation/translations/zh_CN/mm/page_owner.rst | 2 |
2 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/translations/zh_CN/mm/hugetlbfs_reserv.rst b/Documentation/translations/zh_CN/mm/hugetlbfs_reserv.rst index 80787af29222..c1fa35315d8b 100644 --- a/Documentation/translations/zh_CN/mm/hugetlbfs_reserv.rst +++ b/Documentation/translations/zh_CN/mm/hugetlbfs_reserv.rst @@ -142,14 +142,14 @@ HPAGE_RESV_OWNER标志被设置,以表明该VMA拥有预留。 消耗预留/分配一个巨页 =========================== -当与预留相关的巨页在相应的映射中被分配和实例化时,预留就被消耗了。该分配是在函数alloc_huge_page() +当与预留相关的巨页在相应的映射中被分配和实例化时,预留就被消耗了。该分配是在函数alloc_hugetlb_folio() 中进行的:: - struct page *alloc_huge_page(struct vm_area_struct *vma, + struct folio *alloc_hugetlb_folio(struct vm_area_struct *vma, unsigned long addr, int avoid_reserve) -alloc_huge_page被传递给一个VMA指针和一个虚拟地址,因此它可以查阅预留映射以确定是否存在预留。 -此外,alloc_huge_page需要一个参数avoid_reserve,该参数表示即使看起来已经为指定的地址预留了 +alloc_hugetlb_folio被传递给一个VMA指针和一个虚拟地址,因此它可以查阅预留映射以确定是否存在预留。 +此外,alloc_hugetlb_folio需要一个参数avoid_reserve,该参数表示即使看起来已经为指定的地址预留了 预留,也不应该使用预留。avoid_reserve参数最常被用于写时拷贝和页面迁移的情况下,即现有页面的额 外拷贝被分配。 @@ -162,7 +162,7 @@ vma_needs_reservation()返回的值通常为0或1。如果该地址存在预留 确定预留是否存在并可用于分配后,调用dequeue_huge_page_vma()函数。这个函数需要两个与预留有关 的参数: -- avoid_reserve,这是传递给alloc_huge_page()的同一个值/参数。 +- avoid_reserve,这是传递给alloc_hugetlb_folio()的同一个值/参数。 - chg,尽管这个参数的类型是long,但只有0或1的值被传递给dequeue_huge_page_vma。如果该值为0, 则表明存在预留(关于可能的问题,请参见 “预留和内存策略” 一节)。如果值 为1,则表示不存在预留,如果可能的话,必须从全局空闲池中取出该页。 @@ -179,7 +179,7 @@ free_huge_pages的值被递减。如果有一个与该页相关的预留,将 的剩余巨页和超额分配的问题。即使分配了一个多余的页面,也会进行与上面一样的基于预留的调整: SetPagePrivate(page) 和 resv_huge_pages--. -在获得一个新的巨页后,(page)->private被设置为与该页面相关的子池的值,如果它存在的话。当页 +在获得一个新的巨页后,(folio)->_hugetlb_subpool被设置为与该页面相关的子池的值,如果它存在的话。当页 面被释放时,这将被用于子池的计数。 然后调用函数vma_commit_reservation(),根据预留的消耗情况调整预留映射。一般来说,这涉及 @@ -199,7 +199,7 @@ SetPagePrivate(page)和resv_huge_pages-。 已经存在,所以不做任何改变。然而,如果共享映射中没有预留,或者这是一个私有映射,则必须创建 一个新的条目。 -在alloc_huge_page()开始调用vma_needs_reservation()和页面分配后调用 +在alloc_hugetlb_folio()开始调用vma_needs_reservation()和页面分配后调用 vma_commit_reservation()之间,预留映射有可能被改变。如果hugetlb_reserve_pages在共 享映射中为同一页面被调用,这将是可能的。在这种情况下,预留计数和子池空闲页计数会有一个偏差。 这种罕见的情况可以通过比较vma_needs_reservation和vma_commit_reservation的返回值来 diff --git a/Documentation/translations/zh_CN/mm/page_owner.rst b/Documentation/translations/zh_CN/mm/page_owner.rst index dba511fafef2..b72a972271d9 100644 --- a/Documentation/translations/zh_CN/mm/page_owner.rst +++ b/Documentation/translations/zh_CN/mm/page_owner.rst @@ -51,7 +51,7 @@ page owner在默认情况下是禁用的。所以,如果你想使用它,你 1) 构建用户空间的帮助:: - cd tools/vm + cd tools/mm make page_owner_sort 2) 启用page owner: 添加 "page_owner=on" 到 boot cmdline. |