From f1f9671bd8f7d2ac6a918bad806ab5bdc0daaf4e Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Sat, 20 May 2006 19:45:26 +0100 Subject: [JFFS2] Introduce jffs2_link_node_ref() function to reduce code duplication The same sequence of code was repeated in many places, to add a new struct jffs2_raw_node_ref to an eraseblock and adjust the space accounting accordingly. Move it out-of-line. Signed-off-by: David Woodhouse --- fs/jffs2/erase.c | 18 ++++---------- fs/jffs2/nodelist.c | 34 +++++++++++++++++++++++++ fs/jffs2/nodelist.h | 2 ++ fs/jffs2/nodemgmt.c | 16 +----------- fs/jffs2/scan.c | 49 +++++++++--------------------------- fs/jffs2/summary.c | 71 +++++++++++------------------------------------------ 6 files changed, 68 insertions(+), 122 deletions(-) (limited to 'fs/jffs2') diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c index dad68fd..fecf558 100644 --- a/fs/jffs2/erase.c +++ b/fs/jffs2/erase.c @@ -373,12 +373,8 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb goto filebad; } - jeb->first_node = jeb->last_node = NULL; + /* Everything else got zeroed before the erase */ jeb->free_size = c->sector_size; - jeb->used_size = 0; - jeb->dirty_size = 0; - jeb->wasted_size = 0; - } else { struct kvec vecs[1]; @@ -412,17 +408,13 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb goto filebad; } + /* Everything else got zeroed before the erase */ + jeb->free_size = c->sector_size; + marker_ref->next_in_ino = NULL; - marker_ref->next_phys = NULL; marker_ref->flash_offset = jeb->offset | REF_NORMAL; - marker_ref->__totlen = c->cleanmarker_size; - - jeb->first_node = jeb->last_node = marker_ref; - jeb->free_size = c->sector_size - c->cleanmarker_size; - jeb->used_size = c->cleanmarker_size; - jeb->dirty_size = 0; - jeb->wasted_size = 0; + jffs2_link_node_ref(c, jeb, marker_ref, c->cleanmarker_size); } spin_lock(&c->erase_completion_lock); diff --git a/fs/jffs2/nodelist.c b/fs/jffs2/nodelist.c index 4973cd6..1fc8aed 100644 --- a/fs/jffs2/nodelist.c +++ b/fs/jffs2/nodelist.c @@ -1046,3 +1046,37 @@ void jffs2_kill_fragtree(struct rb_root *root, struct jffs2_sb_info *c) cond_resched(); } } + +void jffs2_link_node_ref(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, + struct jffs2_raw_node_ref *ref, uint32_t len) +{ + if (!jeb->first_node) + jeb->first_node = ref; + if (jeb->last_node) + jeb->last_node->next_phys = ref; + jeb->last_node = ref; + + switch(ref_flags(ref)) { + case REF_UNCHECKED: + c->unchecked_size += len; + jeb->unchecked_size += len; + break; + + case REF_NORMAL: + case REF_PRISTINE: + c->used_size += len; + jeb->used_size += len; + break; + + case REF_OBSOLETE: + c->dirty_size += len; + jeb->used_size += len; + break; + } + c->free_size -= len; + jeb->free_size -= len; + + /* Set __totlen field... for now */ + ref->__totlen = len; + ref->next_phys = NULL; +} diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index 8dda98f..bac4ec3 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -348,6 +348,8 @@ void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *t int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn); void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size); int jffs2_add_older_frag_to_fragtree(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_tmp_dnode_info *tn); +void jffs2_link_node_ref(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, + struct jffs2_raw_node_ref *ref, uint32_t len); /* nodemgmt.c */ int jffs2_thread_should_wake(struct jffs2_sb_info *c); diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c index 0e1f58a..d6eab1b 100644 --- a/fs/jffs2/nodemgmt.c +++ b/fs/jffs2/nodemgmt.c @@ -403,21 +403,7 @@ int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_r #endif spin_lock(&c->erase_completion_lock); - if (!jeb->first_node) - jeb->first_node = new; - if (jeb->last_node) - jeb->last_node->next_phys = new; - jeb->last_node = new; - - jeb->free_size -= len; - c->free_size -= len; - if (ref_obsolete(new)) { - jeb->dirty_size += len; - c->dirty_size += len; - } else { - jeb->used_size += len; - c->used_size += len; - } + jffs2_link_node_ref(c, jeb, new, len); if (!jeb->free_size && !jeb->dirty_size && !ISDIRTY(jeb->wasted_size)) { /* If it lives on the dirty_list, jffs2_reserve_space will put it there */ diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c index 40d62d0..3cbe9f0 100644 --- a/fs/jffs2/scan.c +++ b/fs/jffs2/scan.c @@ -351,17 +351,11 @@ static int jffs2_scan_xattr_node(struct jffs2_sb_info *c, struct jffs2_erasebloc xd->data_crc = je32_to_cpu(rx->data_crc); xd->node = raw; - raw->__totlen = totlen; raw->flash_offset = ofs | REF_PRISTINE; - raw->next_phys = NULL; raw->next_in_ino = (void *)xd; - if (!jeb->first_node) - jeb->first_node = raw; - if (jeb->last_node) - jeb->last_node->next_phys = raw; - jeb->last_node = raw; - USED_SPACE(PAD(je32_to_cpu(rx->totlen))); + jffs2_link_node_ref(c, jeb, raw, totlen); + if (jffs2_sum_active()) jffs2_sum_add_xattr_mem(s, rx, ofs - jeb->offset); dbg_xattr("scaning xdatum at %#08x (xid=%u, version=%u)\n", @@ -418,17 +412,11 @@ static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock ref->next = c->xref_temp; c->xref_temp = ref; - raw->__totlen = PAD(je32_to_cpu(rr->totlen)); raw->flash_offset = ofs | REF_PRISTINE; - raw->next_phys = NULL; raw->next_in_ino = (void *)ref; - if (!jeb->first_node) - jeb->first_node = raw; - if (jeb->last_node) - jeb->last_node->next_phys = raw; - jeb->last_node = raw; - USED_SPACE(PAD(je32_to_cpu(rr->totlen))); + jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(rr->totlen))); + if (jffs2_sum_active()) jffs2_sum_add_xref_mem(s, rr, ofs - jeb->offset); dbg_xattr("scan xref at %#08x (xid=%u, ino=%u)\n", @@ -827,12 +815,10 @@ scan_more: return -ENOMEM; } marker_ref->next_in_ino = NULL; - marker_ref->next_phys = NULL; marker_ref->flash_offset = ofs | REF_NORMAL; - marker_ref->__totlen = c->cleanmarker_size; - jeb->first_node = jeb->last_node = marker_ref; - USED_SPACE(PAD(c->cleanmarker_size)); + jffs2_link_node_ref(c, jeb, marker_ref, c->cleanmarker_size); + ofs += PAD(c->cleanmarker_size); } break; @@ -971,16 +957,11 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc /* Wheee. It worked */ raw->flash_offset = ofs | REF_UNCHECKED; - raw->__totlen = PAD(je32_to_cpu(ri->totlen)); - raw->next_phys = NULL; - raw->next_in_ino = ic->nodes; + raw->next_in_ino = ic->nodes; ic->nodes = raw; - if (!jeb->first_node) - jeb->first_node = raw; - if (jeb->last_node) - jeb->last_node->next_phys = raw; - jeb->last_node = raw; + + jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(ri->totlen))); D1(printk(KERN_DEBUG "Node is ino #%u, version %d. Range 0x%x-0x%x\n", je32_to_cpu(ri->ino), je32_to_cpu(ri->version), @@ -989,8 +970,6 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc pseudo_random += je32_to_cpu(ri->version); - UNCHECKED_SPACE(PAD(je32_to_cpu(ri->totlen))); - if (jffs2_sum_active()) { jffs2_sum_add_inode_mem(s, ri, ofs - jeb->offset); } @@ -1053,16 +1032,11 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo return -ENOMEM; } - raw->__totlen = PAD(je32_to_cpu(rd->totlen)); raw->flash_offset = ofs | REF_PRISTINE; - raw->next_phys = NULL; raw->next_in_ino = ic->nodes; ic->nodes = raw; - if (!jeb->first_node) - jeb->first_node = raw; - if (jeb->last_node) - jeb->last_node->next_phys = raw; - jeb->last_node = raw; + + jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(rd->totlen))); fd->raw = raw; fd->next = NULL; @@ -1070,7 +1044,6 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo fd->ino = je32_to_cpu(rd->ino); fd->nhash = full_name_hash(fd->name, rd->nsize); fd->type = rd->type; - USED_SPACE(PAD(je32_to_cpu(rd->totlen))); jffs2_add_fd_to_list(c, fd, &ic->scan_dents); if (jffs2_sum_active()) { diff --git a/fs/jffs2/summary.c b/fs/jffs2/summary.c index 5dbe87b..9121897 100644 --- a/fs/jffs2/summary.c +++ b/fs/jffs2/summary.c @@ -410,19 +410,13 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras } raw->flash_offset = (jeb->offset + je32_to_cpu(spi->offset)) | REF_UNCHECKED; - raw->__totlen = PAD(je32_to_cpu(spi->totlen)); - raw->next_phys = NULL; - raw->next_in_ino = ic->nodes; + raw->next_in_ino = ic->nodes; ic->nodes = raw; - if (!jeb->first_node) - jeb->first_node = raw; - if (jeb->last_node) - jeb->last_node->next_phys = raw; - jeb->last_node = raw; - *pseudo_random += je32_to_cpu(spi->version); - UNCHECKED_SPACE(PAD(je32_to_cpu(spi->totlen))); + jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(spi->totlen))); + + *pseudo_random += je32_to_cpu(spi->version); sp += JFFS2_SUMMARY_INODE_SIZE; @@ -457,16 +451,11 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras return -ENOMEM; } - raw->__totlen = PAD(je32_to_cpu(spd->totlen)); raw->flash_offset = (jeb->offset + je32_to_cpu(spd->offset)) | REF_PRISTINE; - raw->next_phys = NULL; raw->next_in_ino = ic->nodes; ic->nodes = raw; - if (!jeb->first_node) - jeb->first_node = raw; - if (jeb->last_node) - jeb->last_node->next_phys = raw; - jeb->last_node = raw; + + jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(spd->totlen))); fd->raw = raw; fd->next = NULL; @@ -474,7 +463,7 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras fd->ino = je32_to_cpu(spd->ino); fd->nhash = full_name_hash(fd->name, spd->nsize); fd->type = spd->type; - USED_SPACE(PAD(je32_to_cpu(spd->totlen))); + jffs2_add_fd_to_list(c, fd, &ic->scan_dents); *pseudo_random += je32_to_cpu(spd->version); @@ -516,17 +505,11 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras xd->node = raw; raw->flash_offset = ofs | REF_UNCHECKED; - raw->__totlen = PAD(je32_to_cpu(spx->totlen)); - raw->next_phys = NULL; raw->next_in_ino = (void *)xd; - if (!jeb->first_node) - jeb->first_node = raw; - if (jeb->last_node) - jeb->last_node->next_phys = raw; - jeb->last_node = raw; + + jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(spx->totlen))); *pseudo_random += je32_to_cpu(spx->xid); - UNCHECKED_SPACE(je32_to_cpu(spx->totlen)); sp += JFFS2_SUMMARY_XATTR_SIZE; break; @@ -559,17 +542,11 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras ref->next = c->xref_temp; c->xref_temp = ref; - raw->__totlen = PAD(sizeof(struct jffs2_raw_xref)); raw->flash_offset = ofs | REF_UNCHECKED; - raw->next_phys = NULL; raw->next_in_ino = (void *)ref; - if (!jeb->first_node) - jeb->first_node = raw; - if (jeb->last_node) - jeb->last_node->next_phys = raw; - jeb->last_node = raw; - UNCHECKED_SPACE(PAD(sizeof(struct jffs2_raw_xref))); + jffs2_link_node_ref(c, jeb, raw, PAD(sizeof(struct jffs2_raw_xref))); + *pseudo_random += ofs; sp += JFFS2_SUMMARY_XREF_SIZE; @@ -653,13 +630,10 @@ int jffs2_sum_scan_sumnode(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb return -ENOMEM; } - marker_ref->next_in_ino = NULL; - marker_ref->next_phys = NULL; marker_ref->flash_offset = jeb->offset | REF_NORMAL; - marker_ref->__totlen = je32_to_cpu(summary->cln_mkr); - jeb->first_node = jeb->last_node = marker_ref; + marker_ref->next_in_ino = NULL; - USED_SPACE( PAD(je32_to_cpu(summary->cln_mkr)) ); + jffs2_link_node_ref(c, jeb, marker_ref, je32_to_cpu(summary->cln_mkr)); } } @@ -682,15 +656,8 @@ int jffs2_sum_scan_sumnode(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb cache_ref->next_in_ino = NULL; cache_ref->next_phys = NULL; cache_ref->flash_offset = ofs | REF_NORMAL; - cache_ref->__totlen = sumsize; - - if (!jeb->first_node) - jeb->first_node = cache_ref; - if (jeb->last_node) - jeb->last_node->next_phys = cache_ref; - jeb->last_node = cache_ref; - USED_SPACE(sumsize); + jffs2_link_node_ref(c, jeb, cache_ref, sumsize); jeb->wasted_size += jeb->free_size; c->wasted_size += jeb->free_size; @@ -888,17 +855,9 @@ int jffs2_sum_write_sumnode(struct jffs2_sb_info *c) } summary_ref->next_in_ino = NULL; - summary_ref->next_phys = NULL; summary_ref->flash_offset = (jeb->offset + c->sector_size - jeb->free_size) | REF_NORMAL; - summary_ref->__totlen = infosize; - - if (!jeb->first_node) - jeb->first_node = summary_ref; - if (jeb->last_node) - jeb->last_node->next_phys = summary_ref; - jeb->last_node = summary_ref; - USED_SPACE(infosize); + jffs2_link_node_ref(c, jeb, summary_ref, infosize); return 0; } -- cgit v1.1