Cross Reference: /drivers/mtd/mtdblock.c

Lines Matching refs:mtdblk
114 static int write_cached_data (struct mtdblk_dev *mtdblk)
116 	struct mtd_info *mtd = mtdblk->mbd.mtd;
119 	if (mtdblk->cache_state != STATE_DIRTY)
124 			mtdblk->cache_offset, mtdblk->cache_size);
126 	ret = erase_write (mtd, mtdblk->cache_offset,
127 			   mtdblk->cache_size, mtdblk->cache_data);
138 	mtdblk->cache_state = STATE_EMPTY;
143 static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
146 	struct mtd_info *mtd = mtdblk->mbd.mtd;
147 	unsigned int sect_size = mtdblk->cache_size;
176 			if (mtdblk->cache_state == STATE_DIRTY &&
177 			    mtdblk->cache_offset != sect_start) {
178 				ret = write_cached_data(mtdblk);
183 			if (mtdblk->cache_state == STATE_EMPTY ||
184 			    mtdblk->cache_offset != sect_start) {
186 				mtdblk->cache_state = STATE_EMPTY;
188 					       &retlen, mtdblk->cache_data);
194 				mtdblk->cache_offset = sect_start;
195 				mtdblk->cache_size = sect_size;
196 				mtdblk->cache_state = STATE_CLEAN;
200 			memcpy (mtdblk->cache_data + offset, buf, size);
201 			mtdblk->cache_state = STATE_DIRTY;
213 static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
216 	struct mtd_info *mtd = mtdblk->mbd.mtd;
217 	unsigned int sect_size = mtdblk->cache_size;
240 		if (mtdblk->cache_state != STATE_EMPTY &&
241 		    mtdblk->cache_offset == sect_start) {
242 			memcpy (buf, mtdblk->cache_data + offset, size);
262 	struct mtdblk_dev *mtdblk = container_of(dev, struct mtdblk_dev, mbd);
263 	return do_cached_read(mtdblk, block<<9, 512, buf);
269 	struct mtdblk_dev *mtdblk = container_of(dev, struct mtdblk_dev, mbd);
270 	if (unlikely(!mtdblk->cache_data && mtdblk->cache_size)) {
271 		mtdblk->cache_data = vmalloc(mtdblk->mbd.mtd->erasesize);
272 		if (!mtdblk->cache_data)
279 	return do_cached_write(mtdblk, block<<9, 512, buf);
284 	struct mtdblk_dev *mtdblk = container_of(mbd, struct mtdblk_dev, mbd);
289 	if (mtdblk->count) {
290 		mtdblk->count++;
296 	mtdblk->count = 1;
297 	mutex_init(&mtdblk->cache_mutex);
298 	mtdblk->cache_state = STATE_EMPTY;
300 		mtdblk->cache_size = mbd->mtd->erasesize;
301 		mtdblk->cache_data = NULL;
313 	struct mtdblk_dev *mtdblk = container_of(mbd, struct mtdblk_dev, mbd);
319 	mutex_lock(&mtdblk->cache_mutex);
320 	write_cached_data(mtdblk);
321 	mutex_unlock(&mtdblk->cache_mutex);
323 	if (!--mtdblk->count) {
330 		vfree(mtdblk->cache_data);
342 	struct mtdblk_dev *mtdblk = container_of(dev, struct mtdblk_dev, mbd);
344 	mutex_lock(&mtdblk->cache_mutex);
345 	write_cached_data(mtdblk);
346 	mutex_unlock(&mtdblk->cache_mutex);