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btrfs: get rid of extent_io_tree::dirty_bytes

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This was used as an optimization for count_range_bits(EXTENT_DIRTY),
which was used by the failed record code.  However this was removed in
this series by patch "btrfs: convert the io_failure_tree to a plain
rb_tree" which was the last user of this optimization.  Remove the
->dirty_bytes as nobody cares anymore.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2022-09-09 17:53:45 -04:00 committed by David Sterba
parent 4374d03d21
commit 71528e9e16
2 changed files with 1 additions and 17 deletions
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17
fs/btrfs/extent-io-tree.c
View File

@ -98,7 +98,6 @@ void extent_io_tree_init(struct btrfs_fs_info *fs_info,
{
tree->fs_info = fs_info;
tree->state = RB_ROOT;
tree->dirty_bytes = 0;
spin_lock_init(&tree->lock);
tree->private_data = private_data;
tree->owner = owner;
@ -378,10 +377,6 @@ static void set_state_bits(struct extent_io_tree *tree,
if (tree->private_data && is_data_inode(tree->private_data))
btrfs_set_delalloc_extent(tree->private_data, state, bits);
if ((bits_to_set & EXTENT_DIRTY) && !(state->state & EXTENT_DIRTY)) {
u64 range = state->end - state->start + 1;
tree->dirty_bytes += range;
}
ret = add_extent_changeset(state, bits_to_set, changeset, 1);
BUG_ON(ret < 0);
state->state |= bits_to_set;
@ -515,12 +510,6 @@ static struct extent_state *clear_state_bit(struct extent_io_tree *tree,
u32 bits_to_clear = bits & ~EXTENT_CTLBITS;
int ret;
if ((bits_to_clear & EXTENT_DIRTY) && (state->state & EXTENT_DIRTY)) {
u64 range = state->end - state->start + 1;
WARN_ON(range > tree->dirty_bytes);
tree->dirty_bytes -= range;
}
if (tree->private_data && is_data_inode(tree->private_data))
btrfs_clear_delalloc_extent(tree->private_data, state, bits);
@ -1515,10 +1504,7 @@ u64 count_range_bits(struct extent_io_tree *tree,
return 0;
spin_lock(&tree->lock);
if (cur_start == 0 && bits == EXTENT_DIRTY) {
total_bytes = tree->dirty_bytes;
goto out;
}
/*
* This search will find all the extents that end after our range
* starts.
@ -1544,7 +1530,6 @@ u64 count_range_bits(struct extent_io_tree *tree,
}
state = next_state(state);
}
out:
spin_unlock(&tree->lock);
return total_bytes;
}

1
fs/btrfs/extent-io-tree.h
View File

@ -69,7 +69,6 @@ struct extent_io_tree {
struct rb_root state;
struct btrfs_fs_info *fs_info;
void *private_data;
u64 dirty_bytes;
/* Who owns this io tree, should be one of IO_TREE_* */
u8 owner;