40 	struct affs_sb_info *sbi = AFFS_SB(sb);  in affs_free_block()  local
48 	if (block > sbi->s_partition_size)  in affs_free_block()
51 	blk     = block - sbi->s_reserved;  in affs_free_block()
52 	bmap    = blk / sbi->s_bmap_bits;  in affs_free_block()
53 	bit     = blk % sbi->s_bmap_bits;  in affs_free_block()
54 	bm      = &sbi->s_bitmap[bmap];  in affs_free_block()
56 	mutex_lock(&sbi->s_bmlock);  in affs_free_block()
58 	bh = sbi->s_bmap_bh;  in affs_free_block()
59 	if (sbi->s_last_bmap != bmap) {  in affs_free_block()
64 		sbi->s_bmap_bh = bh;  in affs_free_block()
65 		sbi->s_last_bmap = bmap;  in affs_free_block()
85 	mutex_unlock(&sbi->s_bmlock);  in affs_free_block()
90 	mutex_unlock(&sbi->s_bmlock);  in affs_free_block()
95 	sbi->s_bmap_bh = NULL;  in affs_free_block()
96 	sbi->s_last_bmap = ~0;  in affs_free_block()
97 	mutex_unlock(&sbi->s_bmlock);  in affs_free_block()
117 	struct affs_sb_info *sbi;  in affs_alloc_block()  local
125 	sbi = AFFS_SB(sb);  in affs_alloc_block()
135 	if (!goal || goal > sbi->s_partition_size) {  in affs_alloc_block()
140 		goal = sbi->s_reserved;  in affs_alloc_block()
143 	blk = goal - sbi->s_reserved;  in affs_alloc_block()
144 	bmap = blk / sbi->s_bmap_bits;  in affs_alloc_block()
145 	bm = &sbi->s_bitmap[bmap];  in affs_alloc_block()
147 	mutex_lock(&sbi->s_bmlock);  in affs_alloc_block()
154 	i = sbi->s_bmap_count;  in affs_alloc_block()
160 		if (bmap < sbi->s_bmap_count)  in affs_alloc_block()
164 		bm = sbi->s_bitmap;  in affs_alloc_block()
166 	blk = bmap * sbi->s_bmap_bits;  in affs_alloc_block()
170 	bh = sbi->s_bmap_bh;  in affs_alloc_block()
171 	if (sbi->s_last_bmap != bmap) {  in affs_alloc_block()
176 		sbi->s_bmap_bh = bh;  in affs_alloc_block()
177 		sbi->s_last_bmap = bmap;  in affs_alloc_block()
181 	bit = blk % sbi->s_bmap_bits;  in affs_alloc_block()
206 	blk += bit + sbi->s_reserved;  in affs_alloc_block()
228 	mutex_unlock(&sbi->s_bmlock);  in affs_alloc_block()
235 	sbi->s_bmap_bh = NULL;  in affs_alloc_block()
236 	sbi->s_last_bmap = ~0;  in affs_alloc_block()
238 	mutex_unlock(&sbi->s_bmlock);  in affs_alloc_block()
250 	struct affs_sb_info *sbi = AFFS_SB(sb);  in affs_init_bitmap()  local
255 	if (!AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->bm_flag) {  in affs_init_bitmap()
261 	sbi->s_last_bmap = ~0;  in affs_init_bitmap()
262 	sbi->s_bmap_bh = NULL;  in affs_init_bitmap()
263 	sbi->s_bmap_bits = sb->s_blocksize * 8 - 32;  in affs_init_bitmap()
264 	sbi->s_bmap_count = (sbi->s_partition_size - sbi->s_reserved +  in affs_init_bitmap()
265 				 sbi->s_bmap_bits - 1) / sbi->s_bmap_bits;  in affs_init_bitmap()
266 	size = sbi->s_bmap_count * sizeof(*bm);  in affs_init_bitmap()
267 	bm = sbi->s_bitmap = kzalloc(size, GFP_KERNEL);  in affs_init_bitmap()
268 	if (!sbi->s_bitmap) {  in affs_init_bitmap()
273 	bmap_blk = (__be32 *)sbi->s_root_bh->b_data;  in affs_init_bitmap()
277 	for (i = sbi->s_bmap_count; i > 0; bm++, i--) {  in affs_init_bitmap()
314 	offset = (sbi->s_partition_size - sbi->s_reserved) % sbi->s_bmap_bits;  in affs_init_bitmap()
354 	struct affs_sb_info *sbi = AFFS_SB(sb);  in affs_free_bitmap()  local
356 	if (!sbi->s_bitmap)  in affs_free_bitmap()
359 	affs_brelse(sbi->s_bmap_bh);  in affs_free_bitmap()
360 	sbi->s_bmap_bh = NULL;  in affs_free_bitmap()
361 	sbi->s_last_bmap = ~0;  in affs_free_bitmap()
362 	kfree(sbi->s_bitmap);  in affs_free_bitmap()
363 	sbi->s_bitmap = NULL;  in affs_free_bitmap()