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btrfs: extent-tree: Use btrfs_ref to refactor add_pinned_bytes()

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Since add_pinned_bytes() only needs to know if the extent is metadata
and if it's a chunk tree extent, btrfs_ref is a perfect match for it, as
we don't need various owner/level trick to determine extent type.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2019-04-04 14:45:34 +08:00 committed by David Sterba
parent 8a5040f7d9
commit ddf30cf03f
1 changed files with 10 additions and 16 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

26
fs/btrfs/extent-tree.c
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@ -756,14 +756,15 @@ static struct btrfs_space_info *__find_space_info(struct btrfs_fs_info *info,
return NULL;
}
static void add_pinned_bytes(struct btrfs_fs_info *fs_info, s64 num_bytes,
bool metadata, u64 root_objectid)
static void add_pinned_bytes(struct btrfs_fs_info *fs_info,
struct btrfs_ref *ref)
{
struct btrfs_space_info *space_info;
s64 num_bytes = -ref->len;
u64 flags;
if (metadata) {
if (root_objectid == BTRFS_CHUNK_TREE_OBJECTID)
if (ref->type == BTRFS_REF_METADATA) {
if (ref->tree_ref.root == BTRFS_CHUNK_TREE_OBJECTID)
flags = BTRFS_BLOCK_GROUP_SYSTEM;
else
flags = BTRFS_BLOCK_GROUP_METADATA;
@ -2069,11 +2070,8 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
btrfs_ref_tree_mod(fs_info, &generic_ref);
if (ret == 0 && old_ref_mod < 0 && new_ref_mod >= 0) {
bool metadata = owner < BTRFS_FIRST_FREE_OBJECTID;
add_pinned_bytes(fs_info, -num_bytes, metadata, root_objectid);
}
if (ret == 0 && old_ref_mod < 0 && new_ref_mod >= 0)
add_pinned_bytes(fs_info, &generic_ref);
return ret;
}
@ -7221,8 +7219,7 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
}
out:
if (pin)
add_pinned_bytes(fs_info, buf->len, true,
root->root_key.objectid);
add_pinned_bytes(fs_info, &generic_ref);
if (last_ref) {
/*
@ -7273,11 +7270,8 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans,
if (root_objectid != BTRFS_TREE_LOG_OBJECTID)
btrfs_ref_tree_mod(fs_info, &generic_ref);
if (ret == 0 && old_ref_mod >= 0 && new_ref_mod < 0) {
bool metadata = owner < BTRFS_FIRST_FREE_OBJECTID;
add_pinned_bytes(fs_info, num_bytes, metadata, root_objectid);
}
if (ret == 0 && old_ref_mod >= 0 && new_ref_mod < 0)
add_pinned_bytes(fs_info, &generic_ref);
return ret;
}