diff options
Diffstat (limited to 'fs/jffs2/readinode.c')
| -rw-r--r-- | fs/jffs2/readinode.c | 29 |
1 files changed, 12 insertions, 17 deletions
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c index bd31d4956c6d..4884d5edfe65 100644 --- a/fs/jffs2/readinode.c +++ b/fs/jffs2/readinode.c @@ -240,20 +240,16 @@ static int jffs2_add_tn_to_tree(struct jffs2_sb_info *c, /* Find the earliest node which _may_ be relevant to this one */ this = jffs2_lookup_tn(&rii->tn_root, tn->fn->ofs); - if (!this) { - /* First addition to empty tree. $DEITY how I love the easy cases */ - rb_link_node(&tn->rb, NULL, &rii->tn_root.rb_node); - rb_insert_color(&tn->rb, &rii->tn_root); - dbg_readinode("keep new frag\n"); - return 0; - } - - /* If the node is coincident with another at a lower address, - back up until the other node is found. It may be relevant */ - while (tn->overlapped) - tn = tn_prev(tn); + if (this) { + /* If the node is coincident with another at a lower address, + back up until the other node is found. It may be relevant */ + while (this->overlapped) + this = tn_prev(this); - dbg_readinode("'this' found %#04x-%#04x (%s)\n", this->fn->ofs, this->fn->ofs + this->fn->size, this->fn ? "data" : "hole"); + /* First node should never be marked overlapped */ + BUG_ON(!this); + dbg_readinode("'this' found %#04x-%#04x (%s)\n", this->fn->ofs, this->fn->ofs + this->fn->size, this->fn ? "data" : "hole"); + } while (this) { if (this->fn->ofs > fn_end) @@ -288,7 +284,7 @@ static int jffs2_add_tn_to_tree(struct jffs2_sb_info *c, return 0; } /* ... and is good. Kill 'this' and any subsequent nodes which are also overlapped */ - while (this && this->fn->ofs + this->fn->size < fn_end) { + while (this && this->fn->ofs + this->fn->size <= fn_end) { struct jffs2_tmp_dnode_info *next = tn_next(this); if (this->version < tn->version) { tn_erase(this, &rii->tn_root); @@ -300,7 +296,7 @@ static int jffs2_add_tn_to_tree(struct jffs2_sb_info *c, this = next; } dbg_readinode("Done killing overlapped nodes\n"); - break; + continue; } if (this->version > tn->version && this->fn->ofs <= tn->fn->ofs && @@ -326,7 +322,7 @@ static int jffs2_add_tn_to_tree(struct jffs2_sb_info *c, { struct rb_node *parent; struct rb_node **link = &rii->tn_root.rb_node; - struct jffs2_tmp_dnode_info *insert_point; + struct jffs2_tmp_dnode_info *insert_point = NULL; while (*link) { parent = *link; @@ -343,7 +339,6 @@ static int jffs2_add_tn_to_tree(struct jffs2_sb_info *c, rb_insert_color(&tn->rb, &rii->tn_root); } - calc_overlaps: /* If there's anything behind that overlaps us, note it */ this = tn_prev(tn); if (this) { |