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btrfs: always use delayed_refs local variable at btrfs_qgroup_trace_extent()

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Instead of dereferencing the delayed refs from the transaction multiple
times, store it early in the local variable and then always use the
variable.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana
2024-09-24 17:43:56 +01:00
committed by David Sterba
parent c5e2680224
commit db58e152a2
1 changed files with 2 additions and 3 deletions
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5
fs/btrfs/qgroup.c
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@@ -2140,7 +2140,7 @@ int btrfs_qgroup_trace_extent(struct btrfs_trans_handle *trans, u64 bytenr,
{
struct btrfs_fs_info *fs_info = trans->fs_info;
struct btrfs_qgroup_extent_record *record;
struct btrfs_delayed_ref_root *delayed_refs;
struct btrfs_delayed_ref_root *delayed_refs = &trans->transaction->delayed_refs;
const unsigned long index = (bytenr >> fs_info->sectorsize_bits);
int ret;
@@ -2150,12 +2150,11 @@ int btrfs_qgroup_trace_extent(struct btrfs_trans_handle *trans, u64 bytenr,
if (!record)
return -ENOMEM;
if (xa_reserve(&trans->transaction->delayed_refs.dirty_extents, index, GFP_NOFS)) {
if (xa_reserve(&delayed_refs->dirty_extents, index, GFP_NOFS)) {
kfree(record);
return -ENOMEM;
}
delayed_refs = &trans->transaction->delayed_refs;
record->num_bytes = num_bytes;
record->old_roots = NULL;