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authorQu Wenruo <quwenruo@cn.fujitsu.com>2017-06-13 17:19:30 +0800
committerDavid Sterba <dsterba@suse.com>2017-07-12 17:53:41 +0200
commit5b4c9ccce9b6f9a94431f1a571e2299f46c74bf6 (patch)
treefb3a61fcf9c2a41330e2dd9ba4f3b3d7845bcd6b /volumes.c
parentde5d0cea24a716d0fa9fcab6b9cae858fadd8568 (diff)
btrfs-progs: Refactor btrfs_read_sys_array/chunk_tree to use btrfs_fs_info
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'volumes.c')
-rw-r--r--volumes.c25
1 files changed, 11 insertions, 14 deletions
diff --git a/volumes.c b/volumes.c
index e4f67d3..db8b931 100644
--- a/volumes.c
+++ b/volumes.c
@@ -1783,11 +1783,10 @@ int btrfs_check_chunk_valid(struct btrfs_fs_info *fs_info,
*
* For sys chunk in superblock, pass -1 to indicate sys chunk.
*/
-static int read_one_chunk(struct btrfs_root *root, struct btrfs_key *key,
+static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key,
struct extent_buffer *leaf,
struct btrfs_chunk *chunk, int slot)
{
- struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_mapping_tree *map_tree = &fs_info->mapping_tree;
struct map_lookup *map;
struct cache_extent *ce;
@@ -1846,7 +1845,7 @@ static int read_one_chunk(struct btrfs_root *root, struct btrfs_key *key,
printf("warning, device %llu is missing\n",
(unsigned long long)devid);
list_add(&map->stripes[i].dev->dev_list,
- &root->fs_info->fs_devices->devices);
+ &fs_info->fs_devices->devices);
}
}
@@ -1913,11 +1912,10 @@ out:
return ret;
}
-static int read_one_dev(struct btrfs_root *root,
+static int read_one_dev(struct btrfs_fs_info *fs_info,
struct extent_buffer *leaf,
struct btrfs_dev_item *dev_item)
{
- struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_device *device;
u64 devid;
int ret = 0;
@@ -1953,9 +1951,9 @@ static int read_one_dev(struct btrfs_root *root,
return ret;
}
-int btrfs_read_sys_array(struct btrfs_root *root)
+int btrfs_read_sys_array(struct btrfs_fs_info *fs_info)
{
- struct btrfs_super_block *super_copy = root->fs_info->super_copy;
+ struct btrfs_super_block *super_copy = fs_info->super_copy;
struct extent_buffer *sb;
struct btrfs_disk_key *disk_key;
struct btrfs_chunk *chunk;
@@ -1968,7 +1966,7 @@ int btrfs_read_sys_array(struct btrfs_root *root)
u32 cur_offset;
struct btrfs_key key;
- sb = btrfs_find_create_tree_block(root->fs_info,
+ sb = btrfs_find_create_tree_block(fs_info,
BTRFS_SUPER_INFO_OFFSET,
BTRFS_SUPER_INFO_SIZE);
if (!sb)
@@ -2016,7 +2014,7 @@ int btrfs_read_sys_array(struct btrfs_root *root)
if (cur_offset + len > array_size)
goto out_short_read;
- ret = read_one_chunk(root, &key, sb, chunk, -1);
+ ret = read_one_chunk(fs_info, &key, sb, chunk, -1);
if (ret)
break;
} else {
@@ -2040,17 +2038,16 @@ out_short_read:
return -EIO;
}
-int btrfs_read_chunk_tree(struct btrfs_root *root)
+int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info)
{
struct btrfs_path *path;
struct extent_buffer *leaf;
struct btrfs_key key;
struct btrfs_key found_key;
+ struct btrfs_root *root = fs_info->chunk_root;
int ret;
int slot;
- root = root->fs_info->chunk_root;
-
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
@@ -2083,12 +2080,12 @@ int btrfs_read_chunk_tree(struct btrfs_root *root)
struct btrfs_dev_item *dev_item;
dev_item = btrfs_item_ptr(leaf, slot,
struct btrfs_dev_item);
- ret = read_one_dev(root, leaf, dev_item);
+ ret = read_one_dev(fs_info, leaf, dev_item);
BUG_ON(ret);
} else if (found_key.type == BTRFS_CHUNK_ITEM_KEY) {
struct btrfs_chunk *chunk;
chunk = btrfs_item_ptr(leaf, slot, struct btrfs_chunk);
- ret = read_one_chunk(root, &found_key, leaf, chunk,
+ ret = read_one_chunk(fs_info, &found_key, leaf, chunk,
slot);
BUG_ON(ret);
}