- if (dev->eraseBlockInNAND(dev, i - dev->blockOffset /* realign */)) {
- bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
- dev->nErasedBlocks++;
- dev->nFreeChunks += dev->nChunksPerBlock;
+static int yaffs2_checkpt_space_ok(struct yaffs_dev *dev)
+{
+ int blocks_avail = dev->n_erased_blocks - dev->param.n_reserved_blocks;
+
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "checkpt blocks_avail = %d", blocks_avail);
+
+ return (blocks_avail <= 0) ? 0 : 1;
+}
+
+static int yaffs_checkpt_erase(struct yaffs_dev *dev)
+{
+ u32 i;
+
+ if (!dev->drv.drv_erase_fn)
+ return 0;
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "checking blocks %d to %d",
+ dev->internal_start_block, dev->internal_end_block);
+
+ for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
+ struct yaffs_block_info *bi = yaffs_get_block_info(dev, i);
+ int offset_i = apply_block_offset(dev, i);
+ int result;
+
+ if (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT) {
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "erasing checkpt block %d", i);
+
+ dev->n_erasures++;
+
+ result = dev->drv.drv_erase_fn(dev, offset_i);
+ if(result) {
+ bi->block_state = YAFFS_BLOCK_STATE_EMPTY;
+ dev->n_erased_blocks++;
+ dev->n_free_chunks +=
+ dev->param.chunks_per_block;