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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-06-28 10:28:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-06-28 10:28:11 -0700 |
| commit | 6e17c6de3ddf3073741d9c91a796ee696914d8a0 (patch) | |
| tree | 2c425707f78642625dbe2c824c7fded2021e3dc7 /mm/highmem.c | |
| parent | 6aeadf7896bff4ca230702daba8788455e6b866e (diff) | |
| parent | acc72d59c7509540c27c49625cb4b5a8db1f1a84 (diff) | |
| download | net-6e17c6de3ddf3073741d9c91a796ee696914d8a0.tar.gz | |
Merge tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull mm updates from Andrew Morton:
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs
- Yosry has also eliminated cgroup's atomic rstat flushing
- Nhat Pham adds the new cachestat() syscall. It provides userspace
with the ability to query pagecache status - a similar concept to
mincore() but more powerful and with improved usability
- Mel Gorman provides more optimizations for compaction, reducing the
prevalence of page rescanning
- Lorenzo Stoakes has done some maintanance work on the
get_user_pages() interface
- Liam Howlett continues with cleanups and maintenance work to the
maple tree code. Peng Zhang also does some work on maple tree
- Johannes Weiner has done some cleanup work on the compaction code
- David Hildenbrand has contributed additional selftests for
get_user_pages()
- Thomas Gleixner has contributed some maintenance and optimization
work for the vmalloc code
- Baolin Wang has provided some compaction cleanups,
- SeongJae Park continues maintenance work on the DAMON code
- Huang Ying has done some maintenance on the swap code's usage of
device refcounting
- Christoph Hellwig has some cleanups for the filemap/directio code
- Ryan Roberts provides two patch series which yield some
rationalization of the kernel's access to pte entries - use the
provided APIs rather than open-coding accesses
- Lorenzo Stoakes has some fixes to the interaction between pagecache
and directio access to file mappings
- John Hubbard has a series of fixes to the MM selftesting code
- ZhangPeng continues the folio conversion campaign
- Hugh Dickins has been working on the pagetable handling code, mainly
with a view to reducing the load on the mmap_lock
- Catalin Marinas has reduced the arm64 kmalloc() minimum alignment
from 128 to 8
- Domenico Cerasuolo has improved the zswap reclaim mechanism by
reorganizing the LRU management
- Matthew Wilcox provides some fixups to make gfs2 work better with the
buffer_head code
- Vishal Moola also has done some folio conversion work
- Matthew Wilcox has removed the remnants of the pagevec code - their
functionality is migrated over to struct folio_batch
* tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (380 commits)
mm/hugetlb: remove hugetlb_set_page_subpool()
mm: nommu: correct the range of mmap_sem_read_lock in task_mem()
hugetlb: revert use of page_cache_next_miss()
Revert "page cache: fix page_cache_next/prev_miss off by one"
mm/vmscan: fix root proactive reclaim unthrottling unbalanced node
mm: memcg: rename and document global_reclaim()
mm: kill [add|del]_page_to_lru_list()
mm: compaction: convert to use a folio in isolate_migratepages_block()
mm: zswap: fix double invalidate with exclusive loads
mm: remove unnecessary pagevec includes
mm: remove references to pagevec
mm: rename invalidate_mapping_pagevec to mapping_try_invalidate
mm: remove struct pagevec
net: convert sunrpc from pagevec to folio_batch
i915: convert i915_gpu_error to use a folio_batch
pagevec: rename fbatch_count()
mm: remove check_move_unevictable_pages()
drm: convert drm_gem_put_pages() to use a folio_batch
i915: convert shmem_sg_free_table() to use a folio_batch
scatterlist: add sg_set_folio()
...
Diffstat (limited to 'mm/highmem.c')
| -rw-r--r-- | mm/highmem.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/mm/highmem.c b/mm/highmem.c index db251e77f98f87..e19269093a93cf 100644 --- a/mm/highmem.c +++ b/mm/highmem.c @@ -161,7 +161,7 @@ struct page *__kmap_to_page(void *vaddr) /* kmap() mappings */ if (WARN_ON_ONCE(addr >= PKMAP_ADDR(0) && addr < PKMAP_ADDR(LAST_PKMAP))) - return pte_page(pkmap_page_table[PKMAP_NR(addr)]); + return pte_page(ptep_get(&pkmap_page_table[PKMAP_NR(addr)])); /* kmap_local_page() mappings */ if (WARN_ON_ONCE(base >= __fix_to_virt(FIX_KMAP_END) && @@ -191,6 +191,7 @@ static void flush_all_zero_pkmaps(void) for (i = 0; i < LAST_PKMAP; i++) { struct page *page; + pte_t ptent; /* * zero means we don't have anything to do, @@ -203,7 +204,8 @@ static void flush_all_zero_pkmaps(void) pkmap_count[i] = 0; /* sanity check */ - BUG_ON(pte_none(pkmap_page_table[i])); + ptent = ptep_get(&pkmap_page_table[i]); + BUG_ON(pte_none(ptent)); /* * Don't need an atomic fetch-and-clear op here; @@ -212,7 +214,7 @@ static void flush_all_zero_pkmaps(void) * getting the kmap_lock (which is held here). * So no dangers, even with speculative execution. */ - page = pte_page(pkmap_page_table[i]); + page = pte_page(ptent); pte_clear(&init_mm, PKMAP_ADDR(i), &pkmap_page_table[i]); set_page_address(page, NULL); @@ -511,7 +513,7 @@ static inline bool kmap_high_unmap_local(unsigned long vaddr) { #ifdef ARCH_NEEDS_KMAP_HIGH_GET if (vaddr >= PKMAP_ADDR(0) && vaddr < PKMAP_ADDR(LAST_PKMAP)) { - kunmap_high(pte_page(pkmap_page_table[PKMAP_NR(vaddr)])); + kunmap_high(pte_page(ptep_get(&pkmap_page_table[PKMAP_NR(vaddr)]))); return true; } #endif @@ -548,7 +550,7 @@ void *__kmap_local_pfn_prot(unsigned long pfn, pgprot_t prot) idx = arch_kmap_local_map_idx(kmap_local_idx_push(), pfn); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); kmap_pte = kmap_get_pte(vaddr, idx); - BUG_ON(!pte_none(*kmap_pte)); + BUG_ON(!pte_none(ptep_get(kmap_pte))); pteval = pfn_pte(pfn, prot); arch_kmap_local_set_pte(&init_mm, vaddr, kmap_pte, pteval); arch_kmap_local_post_map(vaddr, pteval); |