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btrfs: open code trivial helper btrfs_header_chunk_tree_uuid

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The helper btrfs_header_chunk_tree_uuid follows naming convention of
other struct accessors but does something compeletly different. As the
offsetof calculation is clear in the context of extent buffer operations
we can remove it.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-03-20 13:17:13 +01:00
parent 9a8658e33d
commit c4ac754198
2 changed files with 2 additions and 6 deletions
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5
fs/btrfs/ctree.h
View file

@ -1973,11 +1973,6 @@ static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb,
btrfs_set_header_flags(eb, flags);
}
static inline unsigned long btrfs_header_chunk_tree_uuid(const struct extent_buffer *eb)
{
return offsetof(struct btrfs_header, chunk_tree_uuid);
}
static inline int btrfs_is_leaf(const struct extent_buffer *eb)
{
return btrfs_header_level(eb) == 0;

3
fs/btrfs/disk-io.c
View file

@ -3106,7 +3106,8 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
chunk_root->commit_root = btrfs_root_node(chunk_root);
read_extent_buffer(chunk_root->node, fs_info->chunk_tree_uuid,
btrfs_header_chunk_tree_uuid(chunk_root->node), BTRFS_UUID_SIZE);
offsetof(struct btrfs_header, chunk_tree_uuid),
BTRFS_UUID_SIZE);
ret = btrfs_read_chunk_tree(fs_info);
if (ret) {