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/linux-6.6.21/Documentation/translations/zh_CN/mm/
Dhighmem.rst55 * kmap_local_page()。这个函数是用来要求短期映射的。它可以从任何上下文（包括中断）中调用，
70 kmap_local_page()总是返回一个有效的虚拟地址，并且假定kunmap_local()不会失败。
74 page_address()。然而，使用kmap_local_page() / kunmap_local()总是安全的。
81 kmap()，将页面映射到将被使用的同一线程中，并优先使用kmap_local_page()。
83 嵌套kmap_local_page()和kmap_atomic()映射在一定程度上是允许的（最多到KMAP_TYPE_NR），
85 请参见kmap_local_page() kdocs（包含在 "函数 "部分）。
94 未预期延迟的来源之一。因此用户应该选择kmap_local_page()而不是kmap_atomic()。
111 在64位系统中，调用kmap_local_page()、kmap_atomic()和kmap()没有实际作用，因为64位
/linux-6.6.21/include/linux/
Dhighmem.h96 static inline void *kmap_local_page(struct page *page);
204 void *addr = kmap_local_page(page); in clear_user_highpage()
239 void *kaddr = kmap_local_page(page); in clear_highpage()
246 void *kaddr = kmap_local_page(page); in clear_highpage_kasan_tagged()
272 void *kaddr = kmap_local_page(page); in zero_user_segments()
308 vfrom = kmap_local_page(from); in copy_user_highpage()
309 vto = kmap_local_page(to); in copy_user_highpage()
324 vfrom = kmap_local_page(from); in copy_highpage()
325 vto = kmap_local_page(to); in copy_highpage()
347 vfrom = kmap_local_page(from); in copy_mc_user_highpage()
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Dhighmem-internal.h71 static inline void *kmap_local_page(struct page *page) in kmap_local_page() function
183 static inline void *kmap_local_page(struct page *page) in kmap_local_page() function
195 return kmap_local_page(page); in kmap_local_page_prot()
200 return kmap_local_page(pfn_to_page(pfn)); in kmap_local_pfn()
/linux-6.6.21/fs/hfsplus/
Dbnode.c151 dst_ptr = kmap_local_page(*dst_page) + dst; in hfs_bnode_copy()
152 src_ptr = kmap_local_page(*src_page) + src; in hfs_bnode_copy()
196 dst_ptr = kmap_local_page(*dst_page); in hfs_bnode_move()
197 src_ptr = kmap_local_page(*src_page); in hfs_bnode_move()
208 dst_ptr = kmap_local_page(*dst_page); in hfs_bnode_move()
209 src_ptr = kmap_local_page(*src_page); in hfs_bnode_move()
216 dst_ptr = kmap_local_page(*dst_page) + dst; in hfs_bnode_move()
217 src_ptr = kmap_local_page(*src_page) + src; in hfs_bnode_move()
247 dst_ptr = kmap_local_page(*dst_page) + src; in hfs_bnode_move()
248 src_ptr = kmap_local_page(*src_page) + src; in hfs_bnode_move()
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Dbitmap.c42 pptr = kmap_local_page(page); in hfsplus_block_allocate()
87 curr = pptr = kmap_local_page(page); in hfsplus_block_allocate()
138 pptr = kmap_local_page(page); in hfsplus_block_allocate()
188 pptr = kmap_local_page(page); in hfsplus_block_free()
222 pptr = kmap_local_page(page); in hfsplus_block_free()
Dbtree.c166 head = (struct hfs_btree_header_rec *)(kmap_local_page(page) + in hfs_btree_open()
295 head = (struct hfs_btree_header_rec *)(kmap_local_page(page) + in hfs_btree_write()
398 data = kmap_local_page(*pagep); in hfs_bmap_alloc()
422 data = kmap_local_page(*++pagep); in hfs_bmap_alloc()
444 data = kmap_local_page(*pagep); in hfs_bmap_alloc()
494 data = kmap_local_page(page); in hfs_bmap_free()
/linux-6.6.21/Documentation/mm/
Dhighmem.rst54 * kmap_local_page(), kmap_local_folio() - These functions are used to create
78 kmap_local_page(), as well as kmap_local_folio() always returns valid virtual
97 kmap_local_page() or kmap_local_folio().
99 Nesting kmap_local_page() and kmap_atomic() mappings is allowed to a certain
101 because the map implementation is stack based. See kmap_local_page() kdocs
105 * kmap_atomic(). This function has been deprecated; use kmap_local_page().
107 NOTE: Conversions to kmap_local_page() must take care to follow the mapping
108 restrictions imposed on kmap_local_page(). Furthermore, the code between
112 both must be made in conjunction with the use of kmap_local_page().
127 users should prefer kmap_local_page() instead of kmap_atomic().
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/linux-6.6.21/fs/btrfs/
Dlzo.c161 kaddr = kmap_local_page(cur_page); in copy_compressed_data_to_page()
186 kaddr = kmap_local_page(cur_page); in copy_compressed_data_to_page()
254 data_in = kmap_local_page(page_in); in lzo_compress_pages()
291 sizes_ptr = kmap_local_page(pages[0]); in lzo_compress_pages()
344 kaddr = kmap_local_page(cb->compressed_pages[0]); in lzo_decompress_bio()
380 kaddr = kmap_local_page(cur_page); in lzo_decompress_bio()
474 kaddr = kmap_local_page(dest_page); in lzo_decompress()
Dzlib.c157 data_in = kmap_local_page(in_page); in zlib_compress_pages()
170 data_in = kmap_local_page(in_page); in zlib_compress_pages()
284 data_in = kmap_local_page(pages_in[page_in_index]); in zlib_decompress_bio()
339 data_in = kmap_local_page(pages_in[page_in_index]); in zlib_decompress_bio()
Dzstd.c406 workspace->in_buf.src = kmap_local_page(in_page); in zstd_compress_pages()
483 workspace->in_buf.src = kmap_local_page(in_page); in zstd_compress_pages()
562 workspace->in_buf.src = kmap_local_page(pages_in[page_in_index]); in zstd_decompress_bio()
606 workspace->in_buf.src = kmap_local_page(pages_in[page_in_index]); in zstd_decompress_bio()
/linux-6.6.21/fs/hfs/
Dbtree.c83 head = (struct hfs_btree_header_rec *)(kmap_local_page(page) + in hfs_btree_open()
174 head = (struct hfs_btree_header_rec *)(kmap_local_page(page) + in hfs_btree_write()
274 data = kmap_local_page(*pagep); in hfs_bmap_alloc()
297 data = kmap_local_page(*++pagep); in hfs_bmap_alloc()
319 data = kmap_local_page(*pagep); in hfs_bmap_alloc()
366 data = kmap_local_page(page); in hfs_bmap_free()
/linux-6.6.21/fs/ecryptfs/
Dread_write.c67 virt = kmap_local_page(page_for_lower); in ecryptfs_write_lower_page_segment()
143 ecryptfs_page_virt = kmap_local_page(ecryptfs_page); in ecryptfs_write()
256 virt = kmap_local_page(page_for_ecryptfs); in ecryptfs_read_lower_page_segment()
/linux-6.6.21/fs/erofs/
Ddecompressor_deflate.c113 kin = kmap_local_page(*rq->in); in z_erofs_deflate_decompress()
167 kout = kmap_local_page(rq->out[no]); in z_erofs_deflate_decompress()
186 kin = kmap_local_page(rq->in[ni]); in z_erofs_deflate_decompress()
190 kout = kmap_local_page(rq->out[no]); in z_erofs_deflate_decompress()
Ddecompressor.c176 inpage = kmap_local_page(*in); in z_erofs_lz4_handle_overlap()
217 headpage = kmap_local_page(*rq->in); in z_erofs_lz4_decompress_mem()
293 dst = kmap_local_page(*rq->out); in z_erofs_lz4_decompress()
344 src = kmap_local_page(rq->in[inpages - 1]) + rq->pageofs_in; in z_erofs_transform_plain()
/linux-6.6.21/kernel/module/
Ddecompress.c122 s.next_out = kmap_local_page(page); in module_gzip_decompress()
181 xz_buf.out = kmap_local_page(page); in module_xz_decompress()
265 zstd_dec.dst = kmap_local_page(page); in module_zstd_decompress()
/linux-6.6.21/fs/xfs/scrub/
Dxfile.c175 kaddr = kmap_local_page(page); in xfile_pread()
250 kaddr = kmap_local_page(page); in xfile_pwrite()
365 kaddr = kmap_local_page(page); in xfile_get_page()
/linux-6.6.21/arch/loongarch/mm/
Dinit.c46 vfrom = kmap_local_page(from); in copy_user_highpage()
47 vto = kmap_local_page(to); in copy_user_highpage()
/linux-6.6.21/drivers/infiniband/sw/rxe/
Drxe_mr.c261 va = kmap_local_page(page); in rxe_mr_copy_xarray()
289 va = kmap_local_page(page); in rxe_mr_copy_dma()
456 va = kmap_local_page(page); in rxe_flush_pmem_iova()
508 va = kmap_local_page(page); in rxe_mr_do_atomic_op()
567 va = kmap_local_page(page); in rxe_mr_do_atomic_write()
/linux-6.6.21/drivers/staging/media/atomisp/pci/hmm/
Dhmm.c296 src = (char *)kmap_local_page(bo->pages[idx]) + offset; in load_and_flush_by_kmap()
428 des = (char *)kmap_local_page(bo->pages[idx]); in hmm_store()
499 des = (char *)kmap_local_page(bo->pages[idx]) + offset; in hmm_set()
/linux-6.6.21/include/crypto/
Dscatterwalk.h68 return kmap_local_page(scatterwalk_page(walk)) + in scatterwalk_map()
/linux-6.6.21/fs/squashfs/
Dfile_direct.c90 pageaddr = kmap_local_page(page[pages - 1]); in squashfs_readpage_block()
Dpage_actor.c81 return actor->pageaddr = kmap_local_page(actor->page[actor->next_page++]); in handle_next_page()
/linux-6.6.21/arch/powerpc/mm/
Dcacheflush.c218 maddr = kmap_local_page(page) + (addr & ~PAGE_MASK); in flush_icache_user_page()
/linux-6.6.21/fs/sysv/
Ddir.c68 return kmap_local_page(page); in dir_get_page()
271 base = kmap_local_page(page); in sysv_make_empty()
/linux-6.6.21/arch/loongarch/kernel/
Duprobes.c147 void *kaddr = kmap_local_page(page); in arch_uprobe_copy_ixol()

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