Pull hotfixes from Andrew Morton: "Mainly MM fixes. About half for issues which were introduced after 5.18 and the remainder for longer-term issues" * tag 'mm-hotfixes-stable-2022-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm: split huge PUD on wp_huge_pud fallback nilfs2: fix incorrect masking of permission flags for symlinks mm/rmap: fix dereferencing invalid subpage pointer in try_to_migrate_one() riscv/mm: fix build error while PAGE_TABLE_CHECK enabled without MMU Documentation: highmem: use literal block for code example in highmem.h comment mm: sparsemem: fix missing higher order allocation splitting mm/damon: use set_huge_pte_at() to make huge pte old sh: convert nommu io{re,un}map() to static inline functions mm: userfaultfd: fix UFFDIO_CONTINUE on fallocated shmem pages
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| @@ -149,19 +149,19 @@ static inline void *kmap_local_folio(struct folio *folio, size_t offset); · 148 unmodified lines | |||
| 149 | * It is used in atomic context when code wants to access the contents of a | 149 | * It is used in atomic context when code wants to access the contents of a |
| 150 | * page that might be allocated from high memory (see __GFP_HIGHMEM), for | 150 | * page that might be allocated from high memory (see __GFP_HIGHMEM), for |
| 151 | * example a page in the pagecache. The API has two functions, and they | 151 | * example a page in the pagecache. The API has two functions, and they |
| 152 | * can be used in a manner similar to the following: | 152 | * can be used in a manner similar to the following:: |
| 153 | * | 153 | * |
| 154 | * -- Find the page of interest. -- | 154 | * // Find the page of interest. |
| 155 | * struct page *page = find_get_page(mapping, offset); | 155 | * struct page *page = find_get_page(mapping, offset); |
| 156 | * | 156 | * |
| 157 | * -- Gain access to the contents of that page. -- | 157 | * // Gain access to the contents of that page. |
| 158 | * void *vaddr = kmap_atomic(page); | 158 | * void *vaddr = kmap_atomic(page); |
| 159 | * | 159 | * |
| 160 | * -- Do something to the contents of that page. -- | 160 | * // Do something to the contents of that page. |
| 161 | * memset(vaddr, 0, PAGE_SIZE); | 161 | * memset(vaddr, 0, PAGE_SIZE); |
| 162 | * | 162 | * |
| 163 | * -- Unmap that page. -- | 163 | * // Unmap that page. |
| 164 | * kunmap_atomic(vaddr); | 164 | * kunmap_atomic(vaddr); |
| 165 | * | 165 | * |
| 166 | * Note that the kunmap_atomic() call takes the result of the kmap_atomic() | 166 | * Note that the kunmap_atomic() call takes the result of the kmap_atomic() |
| 167 | * call, not the argument. | 167 | * call, not the argument. |