23 static int afs_find_contig_bits(union afs_xdr_dir_block *block, unsigned int nr_slots)  in afs_find_contig_bits()  argument
29 	bitmap  = (u64)block->hdr.bitmap[0] << 0 * 8;  in afs_find_contig_bits()
30 	bitmap |= (u64)block->hdr.bitmap[1] << 1 * 8;  in afs_find_contig_bits()
31 	bitmap |= (u64)block->hdr.bitmap[2] << 2 * 8;  in afs_find_contig_bits()
32 	bitmap |= (u64)block->hdr.bitmap[3] << 3 * 8;  in afs_find_contig_bits()
33 	bitmap |= (u64)block->hdr.bitmap[4] << 4 * 8;  in afs_find_contig_bits()
34 	bitmap |= (u64)block->hdr.bitmap[5] << 5 * 8;  in afs_find_contig_bits()
35 	bitmap |= (u64)block->hdr.bitmap[6] << 6 * 8;  in afs_find_contig_bits()
36 	bitmap |= (u64)block->hdr.bitmap[7] << 7 * 8;  in afs_find_contig_bits()
68 static void afs_set_contig_bits(union afs_xdr_dir_block *block,  in afs_set_contig_bits()  argument
76 	block->hdr.bitmap[0] |= (u8)(mask >> 0 * 8);  in afs_set_contig_bits()
77 	block->hdr.bitmap[1] |= (u8)(mask >> 1 * 8);  in afs_set_contig_bits()
78 	block->hdr.bitmap[2] |= (u8)(mask >> 2 * 8);  in afs_set_contig_bits()
79 	block->hdr.bitmap[3] |= (u8)(mask >> 3 * 8);  in afs_set_contig_bits()
80 	block->hdr.bitmap[4] |= (u8)(mask >> 4 * 8);  in afs_set_contig_bits()
81 	block->hdr.bitmap[5] |= (u8)(mask >> 5 * 8);  in afs_set_contig_bits()
82 	block->hdr.bitmap[6] |= (u8)(mask >> 6 * 8);  in afs_set_contig_bits()
83 	block->hdr.bitmap[7] |= (u8)(mask >> 7 * 8);  in afs_set_contig_bits()
89 static void afs_clear_contig_bits(union afs_xdr_dir_block *block,  in afs_clear_contig_bits()  argument
97 	block->hdr.bitmap[0] &= ~(u8)(mask >> 0 * 8);  in afs_clear_contig_bits()
98 	block->hdr.bitmap[1] &= ~(u8)(mask >> 1 * 8);  in afs_clear_contig_bits()
99 	block->hdr.bitmap[2] &= ~(u8)(mask >> 2 * 8);  in afs_clear_contig_bits()
100 	block->hdr.bitmap[3] &= ~(u8)(mask >> 3 * 8);  in afs_clear_contig_bits()
101 	block->hdr.bitmap[4] &= ~(u8)(mask >> 4 * 8);  in afs_clear_contig_bits()
102 	block->hdr.bitmap[5] &= ~(u8)(mask >> 5 * 8);  in afs_clear_contig_bits()
103 	block->hdr.bitmap[6] &= ~(u8)(mask >> 6 * 8);  in afs_clear_contig_bits()
104 	block->hdr.bitmap[7] &= ~(u8)(mask >> 7 * 8);  in afs_clear_contig_bits()
129 static int afs_dir_scan_block(union afs_xdr_dir_block *block, struct qstr *name,  in afs_dir_scan_block()  argument
138 	bitmap  = (u64)block->hdr.bitmap[0] << 0 * 8;  in afs_dir_scan_block()
139 	bitmap |= (u64)block->hdr.bitmap[1] << 1 * 8;  in afs_dir_scan_block()
140 	bitmap |= (u64)block->hdr.bitmap[2] << 2 * 8;  in afs_dir_scan_block()
141 	bitmap |= (u64)block->hdr.bitmap[3] << 3 * 8;  in afs_dir_scan_block()
142 	bitmap |= (u64)block->hdr.bitmap[4] << 4 * 8;  in afs_dir_scan_block()
143 	bitmap |= (u64)block->hdr.bitmap[5] << 5 * 8;  in afs_dir_scan_block()
144 	bitmap |= (u64)block->hdr.bitmap[6] << 6 * 8;  in afs_dir_scan_block()
145 	bitmap |= (u64)block->hdr.bitmap[7] << 7 * 8;  in afs_dir_scan_block()
152 		de = &block->dirents[d];  in afs_dir_scan_block()
175 				union afs_xdr_dir_block *block, int block_num)  in afs_edit_init_block()  argument
177 	memset(block, 0, sizeof(*block));  in afs_edit_init_block()
178 	block->hdr.npages = htons(1);  in afs_edit_init_block()
179 	block->hdr.magic = AFS_DIR_MAGIC;  in afs_edit_init_block()
180 	block->hdr.bitmap[0] = 1;  in afs_edit_init_block()
183 		block->hdr.bitmap[0] = 0xff;  in afs_edit_init_block()
184 		block->hdr.bitmap[1] = 0x1f;  in afs_edit_init_block()
185 		memset(block->meta.alloc_ctrs,  in afs_edit_init_block()
187 		       sizeof(block->meta.alloc_ctrs));  in afs_edit_init_block()
209 	union afs_xdr_dir_block *meta, *block;  in afs_edit_dir_add()  local
258 		block = kmap_local_folio(folio, b * AFS_DIR_BLOCK_SIZE - folio_file_pos(folio));  in afs_edit_dir_add()
267 		       ntohs(block->hdr.npages),  in afs_edit_dir_add()
268 		       ntohs(block->hdr.magic));  in afs_edit_dir_add()
273 			afs_edit_init_block(meta, block, b);  in afs_edit_dir_add()
283 			slot = afs_find_contig_bits(block, need_slots);  in afs_edit_dir_add()
290 		kunmap_local(block);  in afs_edit_dir_add()
310 	block = kmap_local_folio(folio, 0);  in afs_edit_dir_add()
318 	de = &block->dirents[slot];  in afs_edit_dir_add()
328 	afs_set_contig_bits(block, slot, need_slots);  in afs_edit_dir_add()
329 	kunmap_local(block);  in afs_edit_dir_add()
353 	kunmap_local(block);  in afs_edit_dir_add()
376 	union afs_xdr_dir_block *meta, *block;  in afs_edit_dir_remove()  local
419 		block = kmap_local_folio(folio, b * AFS_DIR_BLOCK_SIZE - folio_file_pos(folio));  in afs_edit_dir_remove()
427 			slot = afs_dir_scan_block(block, name, b);  in afs_edit_dir_remove()
432 		kunmap_local(block);  in afs_edit_dir_remove()
446 	de = &block->dirents[slot];  in afs_edit_dir_remove()
455 	afs_clear_contig_bits(block, slot, need_slots);  in afs_edit_dir_remove()
456 	kunmap_local(block);  in afs_edit_dir_remove()
481 	kunmap_local(block);  in afs_edit_dir_remove()