X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=yaffs_yaffs2.c;h=8c31a661ff1d756778b25931233efa575f838b28;hp=32840e76566803c2b50cd2d955252597d8624edd;hb=6f398a8b6eab8d0c61010c144f01d706dc0dad8b;hpb=6500cebaa2c93512d544719956af259ca13f83b7 diff --git a/yaffs_yaffs2.c b/yaffs_yaffs2.c index 32840e7..8c31a66 100644 --- a/yaffs_yaffs2.c +++ b/yaffs_yaffs2.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning @@ -20,6 +20,7 @@ #include "yaffs_getblockinfo.h" #include "yaffs_verify.h" #include "yaffs_attribs.h" +#include "yaffs_summary.h" /* * Checkpoints are really no benefit on very small partitions. @@ -573,7 +574,7 @@ static int yaffs2_wr_checkpt_objs(struct yaffs_dev *dev) } /* Dump end of list */ - memset(&cp, 0xFF, sizeof(struct yaffs_checkpt_obj)); + memset(&cp, 0xff, sizeof(struct yaffs_checkpt_obj)); cp.struct_type = sizeof(cp); if (ok) @@ -835,7 +836,7 @@ int yaffs2_handle_hole(struct yaffs_obj *obj, loff_t new_size) * of hole marker. */ loff_t old_file_size; - int increase; + loff_t increase; int small_hole; int result = YAFFS_OK; struct yaffs_dev *dev = NULL; @@ -868,11 +869,11 @@ int yaffs2_handle_hole(struct yaffs_obj *obj, loff_t new_size) small_hole = 0; if (small_hole) - local_buffer = yaffs_get_temp_buffer(dev, __LINE__); + local_buffer = yaffs_get_temp_buffer(dev); if (local_buffer) { /* fill hole with zero bytes */ - int pos = old_file_size; + loff_t pos = old_file_size; int this_write; int written; memset(local_buffer, 0, dev->data_bytes_per_chunk); @@ -893,7 +894,7 @@ int yaffs2_handle_hole(struct yaffs_obj *obj, loff_t new_size) } } - yaffs_release_temp_buffer(dev, local_buffer, __LINE__); + yaffs_release_temp_buffer(dev, local_buffer); /* If out of space then reverse any chunks we've added */ if (!small_increase_ok) @@ -934,13 +935,14 @@ static inline int yaffs2_scan_chunk(struct yaffs_dev *dev, int blk, int chunk_in_block, int *found_chunks, u8 *chunk_data, - struct list_head *hard_list) + struct list_head *hard_list, + int summary_available) { struct yaffs_obj_hdr *oh; struct yaffs_obj *in; struct yaffs_obj *parent; int equiv_id; - int file_size; + loff_t file_size; int is_shrink; int is_unlinked; struct yaffs_ext_tags tags; @@ -951,7 +953,17 @@ static inline int yaffs2_scan_chunk(struct yaffs_dev *dev, struct yaffs_hardlink_var *hl_var; struct yaffs_symlink_var *sl_var; - result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, &tags); + if (summary_available) { + result = yaffs_summary_fetch(dev, &tags, chunk_in_block); + tags.seq_number = bi->seq_number; + } + + if (!summary_available || tags.obj_id == 0) { + result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, &tags); + dev->tags_used++; + } else { + dev->summary_used++; + } /* Let's have a good look at this chunk... */ @@ -1011,6 +1023,7 @@ static inline int yaffs2_scan_chunk(struct yaffs_dev *dev, dev->n_free_chunks++; } else if (tags.obj_id > YAFFS_MAX_OBJECT_ID || tags.chunk_id > YAFFS_MAX_CHUNK_ID || + tags.obj_id == YAFFS_OBJECTID_SUMMARY || (tags.chunk_id > 0 && tags.n_bytes > dev->data_bytes_per_chunk) || tags.seq_number != bi->seq_number) { @@ -1021,8 +1034,8 @@ static inline int yaffs2_scan_chunk(struct yaffs_dev *dev, dev->n_free_chunks++; } else if (tags.chunk_id > 0) { /* chunk_id > 0 so it is a data chunk... */ - unsigned int endpos; - u32 chunk_base = (tags.chunk_id - 1) * + loff_t endpos; + loff_t chunk_base = (tags.chunk_id - 1) * dev->data_bytes_per_chunk; *found_chunks = 1; @@ -1144,9 +1157,9 @@ static inline int yaffs2_scan_chunk(struct yaffs_dev *dev, (tags.extra_available && tags.extra_obj_type == YAFFS_OBJECT_TYPE_FILE) )) { - u32 this_size = (oh) ? - oh->file_size : - tags.extra_length; + loff_t this_size = (oh) ? + yaffs_oh_to_size(oh) : + tags.extra_file_size; u32 parent_obj_id = (oh) ? oh->parent_obj_id : tags.extra_parent_id; @@ -1180,12 +1193,14 @@ static inline int yaffs2_scan_chunk(struct yaffs_dev *dev, } if (!in->valid && in->variant_type != - (oh ? oh->type : tags.extra_obj_type)) + (oh ? oh->type : tags.extra_obj_type)) { yaffs_trace(YAFFS_TRACE_ERROR, - "yaffs tragedy: Bad object type, %d != %d, for object %d at chunk %d during scan", + "yaffs tragedy: Bad type, %d != %d, for object %d at chunk %d during scan", oh ? oh->type : tags.extra_obj_type, in->variant_type, tags.obj_id, chunk); + in = yaffs_retype_obj(in, oh ? oh->type : tags.extra_obj_type); + } if (!in->valid && (tags.obj_id == YAFFS_OBJECTID_ROOT || @@ -1220,7 +1235,7 @@ static inline int yaffs2_scan_chunk(struct yaffs_dev *dev, parent = yaffs_find_or_create_by_number(dev, oh->parent_obj_id, YAFFS_OBJECT_TYPE_DIRECTORY); - file_size = oh->file_size; + file_size = yaffs_oh_to_size(oh); is_shrink = oh->is_shrink; equiv_id = oh->equiv_id; } else { @@ -1228,7 +1243,7 @@ static inline int yaffs2_scan_chunk(struct yaffs_dev *dev, parent = yaffs_find_or_create_by_number(dev, tags.extra_parent_id, YAFFS_OBJECT_TYPE_DIRECTORY); - file_size = tags.extra_length; + file_size = tags.extra_file_size; is_shrink = tags.extra_is_shrink; equiv_id = tags.extra_equiv_id; in->lazy_loaded = 1; @@ -1346,6 +1361,7 @@ int yaffs2_scan_backwards(struct yaffs_dev *dev) int alloc_failed = 0; struct yaffs_block_index *block_index = NULL; int alt_block_index = 0; + int summary_available; yaffs_trace(YAFFS_TRACE_SCAN, "yaffs2_scan_backwards starts intstartblk %d intendblk %d...", @@ -1371,7 +1387,7 @@ int yaffs2_scan_backwards(struct yaffs_dev *dev) dev->blocks_in_checkpt = 0; - chunk_data = yaffs_get_temp_buffer(dev, __LINE__); + chunk_data = yaffs_get_temp_buffer(dev); /* Scan all the blocks to determine their state */ bi = dev->block_info; @@ -1425,7 +1441,7 @@ int yaffs2_scan_backwards(struct yaffs_dev *dev) bi++; } - yaffs_trace(YAFFS_TRACE_SCAN, "%d blocks to be sorted...", n_to_scan); + yaffs_trace(YAFFS_TRACE_ALWAYS, "%d blocks to be sorted...", n_to_scan); cond_resched(); @@ -1455,18 +1471,27 @@ int yaffs2_scan_backwards(struct yaffs_dev *dev) bi = yaffs_get_block_info(dev, blk); deleted = 0; + summary_available = yaffs_summary_read(dev, dev->sum_tags, blk); + /* For each chunk in each block that needs scanning.... */ found_chunks = 0; - for (c = dev->param.chunks_per_block - 1; + if (summary_available) + c = dev->chunks_per_summary - 1; + else + c = dev->param.chunks_per_block - 1; + + for (/* c is already initialised */; !alloc_failed && c >= 0 && (bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCAN || - bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { + bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING); + c--) { /* Scan backwards... * Read the tags and decide what to do */ if (yaffs2_scan_chunk(dev, bi, blk, c, &found_chunks, chunk_data, - &hard_list) == YAFFS_FAIL) + &hard_list, summary_available) == + YAFFS_FAIL) alloc_failed = 1; } @@ -1498,7 +1523,7 @@ int yaffs2_scan_backwards(struct yaffs_dev *dev) */ yaffs_link_fixup(dev, &hard_list); - yaffs_release_temp_buffer(dev, chunk_data, __LINE__); + yaffs_release_temp_buffer(dev, chunk_data); if (alloc_failed) return YAFFS_FAIL;