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authorQu Wenruo <quwenruo.btrfs@gmx.com>2017-09-11 15:36:06 +0900
committerDavid Sterba <dsterba@suse.com>2017-09-25 15:17:48 +0200
commit02b58051e60658abb0387bec7063e77d2941923b (patch)
treec9df3ed9895d12ca40b19dbf88bdbdd798fc08dc /volumes.c
parent3efd322db238abcee7f8dddd6d5af7f69fc3fac4 (diff)
btrfs-progs: Refactor find_next_chunk to get rid of parameter root and objectid
Function find_next_chunk() is used to find next chunk start position, which should only do search on chunk tree and objectid is set to BTRFS_FIRST_CHUNK_TREE_OBJECTID. So refactor the parameter list to get rid of @root, which should be obtained from fs_info->chunk_root, and @objectid, which is set to BTRFS_FIRST_CHUNK_TREE_OBJECTID. Signed-off-by: Qu Wenruo <quwenruo.btrfs@gmx.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'volumes.c')
-rw-r--r--volumes.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/volumes.c b/volumes.c
index 2ae2d1b..2209e5a 100644
--- a/volumes.c
+++ b/volumes.c
@@ -505,8 +505,9 @@ err:
return ret;
}
-static int find_next_chunk(struct btrfs_root *root, u64 objectid, u64 *offset)
+static int find_next_chunk(struct btrfs_fs_info *fs_info, u64 *offset)
{
+ struct btrfs_root *root = fs_info->chunk_root;
struct btrfs_path *path;
int ret;
struct btrfs_key key;
@@ -517,7 +518,7 @@ static int find_next_chunk(struct btrfs_root *root, u64 objectid, u64 *offset)
if (!path)
return -ENOMEM;
- key.objectid = objectid;
+ key.objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID;
key.offset = (u64)-1;
key.type = BTRFS_CHUNK_ITEM_KEY;
@@ -533,7 +534,7 @@ static int find_next_chunk(struct btrfs_root *root, u64 objectid, u64 *offset)
} else {
btrfs_item_key_to_cpu(path->nodes[0], &found_key,
path->slots[0]);
- if (found_key.objectid != objectid)
+ if (found_key.objectid != BTRFS_FIRST_CHUNK_TREE_OBJECTID)
*offset = 0;
else {
chunk = btrfs_item_ptr(path->nodes[0], path->slots[0],
@@ -995,8 +996,7 @@ again:
}
return -ENOSPC;
}
- ret = find_next_chunk(chunk_root, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
- &offset);
+ ret = find_next_chunk(info, &offset);
if (ret)
return ret;
key.objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID;
@@ -1129,9 +1129,7 @@ int btrfs_alloc_data_chunk(struct btrfs_trans_handle *trans,
} else {
u64 tmp;
- ret = find_next_chunk(chunk_root,
- BTRFS_FIRST_CHUNK_TREE_OBJECTID,
- &tmp);
+ ret = find_next_chunk(info, &tmp);
key.offset = tmp;
if (ret)
return ret;