fs/sysv/balloc.c

45 	struct sysv_sb_info * sbi = SYSV_SB(sb);
47 	sysv_zone_t *blocks = sbi->s_bcache;
49 	unsigned block = fs32_to_cpu(sbi, nr);
56 	if (sbi->s_type == FSTYPE_AFS)
59 	if (block < sbi->s_firstdatazone || block >= sbi->s_nzones) {
64 	mutex_lock(&sbi->s_lock);
65 	count = fs16_to_cpu(sbi, *sbi->s_bcache_count);
67 	if (count > sbi->s_flc_size) {
69 		mutex_unlock(&sbi->s_lock);
76 	if (count == sbi->s_flc_size || count == 0) {
77 		block += sbi->s_block_base;
81 			mutex_unlock(&sbi->s_lock);
85 		*(__fs16*)bh->b_data = cpu_to_fs16(sbi, count);
92 	sbi->s_bcache[count++] = nr;
94 	*sbi->s_bcache_count = cpu_to_fs16(sbi, count);
95 	fs32_add(sbi, sbi->s_free_blocks, 1);
97 	mutex_unlock(&sbi->s_lock);
102 	struct sysv_sb_info *sbi = SYSV_SB(sb);
108 	mutex_lock(&sbi->s_lock);
109 	count = fs16_to_cpu(sbi, *sbi->s_bcache_count);
113 	nr = sbi->s_bcache[--count];
117 	block = fs32_to_cpu(sbi, nr);
119 	*sbi->s_bcache_count = cpu_to_fs16(sbi, count);
121 	if (block < sbi->s_firstdatazone || block >= sbi->s_nzones) {
130 		block += sbi->s_block_base;
134 			*sbi->s_bcache_count = cpu_to_fs16(sbi, 1);
137 		count = fs16_to_cpu(sbi, *(__fs16*)bh->b_data);
138 		if (count > sbi->s_flc_size) {
143 		*sbi->s_bcache_count = cpu_to_fs16(sbi, count);
144 		memcpy(sbi->s_bcache, get_chunk(sb, bh),
149 	fs32_add(sbi, sbi->s_free_blocks, -1);
151 	mutex_unlock(&sbi->s_lock);
155 	mutex_unlock(&sbi->s_lock);
161 	struct sysv_sb_info * sbi = SYSV_SB(sb);
174 	if (sbi->s_type == FSTYPE_AFS)
177 	mutex_lock(&sbi->s_lock);
178 	sb_count = fs32_to_cpu(sbi, *sbi->s_free_blocks);
185 	n = fs16_to_cpu(sbi, *sbi->s_bcache_count);
186 	blocks = sbi->s_bcache;
189 		if (n > sbi->s_flc_size)
197 		block = fs32_to_cpu(sbi, zone);
201 		if (block < sbi->s_firstdatazone || block >= sbi->s_nzones)
203 		block += sbi->s_block_base;
207 		n = fs16_to_cpu(sbi, *(__fs16*)bh->b_data);
215 	mutex_unlock(&sbi->s_lock);
236 		*sbi->s_free_blocks = cpu_to_fs32(sbi, count);