114 void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffer_head *qbh,  in hpfs_map_4sectors()  argument
130 	if (!hpfs_map_sector(s, secno + 0, &qbh->bh[0], 0)) goto bail0;  in hpfs_map_4sectors()
131 	if (!hpfs_map_sector(s, secno + 1, &qbh->bh[1], 0)) goto bail1;  in hpfs_map_4sectors()
132 	if (!hpfs_map_sector(s, secno + 2, &qbh->bh[2], 0)) goto bail2;  in hpfs_map_4sectors()
133 	if (!hpfs_map_sector(s, secno + 3, &qbh->bh[3], 0)) goto bail3;  in hpfs_map_4sectors()
135 	if (likely(qbh->bh[1]->b_data == qbh->bh[0]->b_data + 1 * 512) &&  in hpfs_map_4sectors()
136 	    likely(qbh->bh[2]->b_data == qbh->bh[0]->b_data + 2 * 512) &&  in hpfs_map_4sectors()
137 	    likely(qbh->bh[3]->b_data == qbh->bh[0]->b_data + 3 * 512)) {  in hpfs_map_4sectors()
138 		return qbh->data = qbh->bh[0]->b_data;  in hpfs_map_4sectors()
141 	qbh->data = data = kmalloc(2048, GFP_NOFS);  in hpfs_map_4sectors()
147 	memcpy(data + 0 * 512, qbh->bh[0]->b_data, 512);  in hpfs_map_4sectors()
148 	memcpy(data + 1 * 512, qbh->bh[1]->b_data, 512);  in hpfs_map_4sectors()
149 	memcpy(data + 2 * 512, qbh->bh[2]->b_data, 512);  in hpfs_map_4sectors()
150 	memcpy(data + 3 * 512, qbh->bh[3]->b_data, 512);  in hpfs_map_4sectors()
155 	brelse(qbh->bh[3]);  in hpfs_map_4sectors()
157 	brelse(qbh->bh[2]);  in hpfs_map_4sectors()
159 	brelse(qbh->bh[1]);  in hpfs_map_4sectors()
161 	brelse(qbh->bh[0]);  in hpfs_map_4sectors()
169                           struct quad_buffer_head *qbh)  in hpfs_get_4sectors()  argument
180 	if (!hpfs_get_sector(s, secno + 0, &qbh->bh[0])) goto bail0;  in hpfs_get_4sectors()
181 	if (!hpfs_get_sector(s, secno + 1, &qbh->bh[1])) goto bail1;  in hpfs_get_4sectors()
182 	if (!hpfs_get_sector(s, secno + 2, &qbh->bh[2])) goto bail2;  in hpfs_get_4sectors()
183 	if (!hpfs_get_sector(s, secno + 3, &qbh->bh[3])) goto bail3;  in hpfs_get_4sectors()
185 	if (likely(qbh->bh[1]->b_data == qbh->bh[0]->b_data + 1 * 512) &&  in hpfs_get_4sectors()
186 	    likely(qbh->bh[2]->b_data == qbh->bh[0]->b_data + 2 * 512) &&  in hpfs_get_4sectors()
187 	    likely(qbh->bh[3]->b_data == qbh->bh[0]->b_data + 3 * 512)) {  in hpfs_get_4sectors()
188 		return qbh->data = qbh->bh[0]->b_data;  in hpfs_get_4sectors()
191 	if (!(qbh->data = kmalloc(2048, GFP_NOFS))) {  in hpfs_get_4sectors()
195 	return qbh->data;  in hpfs_get_4sectors()
198 	brelse(qbh->bh[3]);  in hpfs_get_4sectors()
200 	brelse(qbh->bh[2]);  in hpfs_get_4sectors()
202 	brelse(qbh->bh[1]);  in hpfs_get_4sectors()
204 	brelse(qbh->bh[0]);  in hpfs_get_4sectors()
210 void hpfs_brelse4(struct quad_buffer_head *qbh)  in hpfs_brelse4()  argument
212 	if (unlikely(qbh->data != qbh->bh[0]->b_data))  in hpfs_brelse4()
213 		kfree(qbh->data);  in hpfs_brelse4()
214 	brelse(qbh->bh[0]);  in hpfs_brelse4()
215 	brelse(qbh->bh[1]);  in hpfs_brelse4()
216 	brelse(qbh->bh[2]);  in hpfs_brelse4()
217 	brelse(qbh->bh[3]);  in hpfs_brelse4()
220 void hpfs_mark_4buffers_dirty(struct quad_buffer_head *qbh)  in hpfs_mark_4buffers_dirty()  argument
222 	if (unlikely(qbh->data != qbh->bh[0]->b_data)) {  in hpfs_mark_4buffers_dirty()
223 		memcpy(qbh->bh[0]->b_data, qbh->data + 0 * 512, 512);  in hpfs_mark_4buffers_dirty()
224 		memcpy(qbh->bh[1]->b_data, qbh->data + 1 * 512, 512);  in hpfs_mark_4buffers_dirty()
225 		memcpy(qbh->bh[2]->b_data, qbh->data + 2 * 512, 512);  in hpfs_mark_4buffers_dirty()
226 		memcpy(qbh->bh[3]->b_data, qbh->data + 3 * 512, 512);  in hpfs_mark_4buffers_dirty()
228 	mark_buffer_dirty(qbh->bh[0]);  in hpfs_mark_4buffers_dirty()
229 	mark_buffer_dirty(qbh->bh[1]);  in hpfs_mark_4buffers_dirty()
230 	mark_buffer_dirty(qbh->bh[2]);  in hpfs_mark_4buffers_dirty()
231 	mark_buffer_dirty(qbh->bh[3]);  in hpfs_mark_4buffers_dirty()