Btrfs-progs: reset chunk state if we restart check

If we hid a corrupt block that we fix and we restart the fsck loop you will get
lots of noise about duplicate block groups and such.  This is because we don't
clear the block group and chunk cache when we do this restart.  This patch fixes
that, which is a little tricky since the structs are linked together with
various linked lists, but this passed with a user who was hitting this problem.
Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.cz>

diff --git a/cmds-check.c b/cmds-check.c
index fede71e..131eba9 100644 (file)
--- a/cmds-check.c
+++ b/cmds-check.c
@@ -3217,6 +3217,8 @@ static void free_chunk_record(struct cache_extent *cache)
        struct chunk_record *rec;
 
        rec = container_of(cache, struct chunk_record, cache);
+       list_del_init(&rec->list);
+       list_del_init(&rec->dextents);
        free(rec);
 }
 
@@ -3253,6 +3255,7 @@ static void free_block_group_record(struct cache_extent *cache)
        struct block_group_record *rec;
 
        rec = container_of(cache, struct block_group_record, cache);
+       list_del_init(&rec->list);
        free(rec);
 }
 
@@ -3286,6 +3289,10 @@ static void free_device_extent_record(struct cache_extent *cache)
        struct device_extent_record *rec;
 
        rec = container_of(cache, struct device_extent_record, cache);
+       if (!list_empty(&rec->chunk_list))
+               list_del_init(&rec->chunk_list);
+       if (!list_empty(&rec->device_list))
+               list_del_init(&rec->device_list);
        free(rec);
 }
 
@@ -6019,7 +6026,7 @@ static int check_device_used(struct device_record *dev_rec,
                if (dev_extent_rec->objectid != dev_rec->devid)
                        break;
 
-               list_del(&dev_extent_rec->device_list);
+               list_del_init(&dev_extent_rec->device_list);
                total_byte += dev_extent_rec->length;
                cache = next_cache_extent(cache);
        }
@@ -6249,6 +6256,10 @@ again:
                free_extent_cache_tree(&pending);
                free_extent_cache_tree(&reada);
                free_extent_cache_tree(&nodes);
+               free_chunk_cache_tree(&chunk_cache);
+               free_block_group_tree(&block_group_cache);
+               free_device_cache_tree(&dev_cache);
+               free_device_extent_tree(&dev_extent_cache);
                free_extent_record_cache(root->fs_info, &extent_cache);
                goto again;
        }