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Btrfs: trace pinned extents
Pinned extents are an important metric to keep track of for enospc. Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>
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1 changed files with 8 additions and 0 deletions
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@ -6246,6 +6246,9 @@ static int update_block_group(struct btrfs_trans_handle *trans,
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spin_unlock(&cache->lock);
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spin_unlock(&cache->space_info->lock);
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trace_btrfs_space_reservation(root->fs_info, "pinned",
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cache->space_info->flags,
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num_bytes, 1);
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set_extent_dirty(info->pinned_extents,
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bytenr, bytenr + num_bytes - 1,
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GFP_NOFS | __GFP_NOFAIL);
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@ -6320,6 +6323,8 @@ static int pin_down_extent(struct btrfs_root *root,
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spin_unlock(&cache->lock);
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spin_unlock(&cache->space_info->lock);
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trace_btrfs_space_reservation(root->fs_info, "pinned",
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cache->space_info->flags, num_bytes, 1);
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set_extent_dirty(root->fs_info->pinned_extents, bytenr,
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bytenr + num_bytes - 1, GFP_NOFS | __GFP_NOFAIL);
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if (reserved)
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@ -6678,6 +6683,9 @@ static int unpin_extent_range(struct btrfs_root *root, u64 start, u64 end,
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spin_lock(&cache->lock);
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cache->pinned -= len;
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space_info->bytes_pinned -= len;
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trace_btrfs_space_reservation(fs_info, "pinned",
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space_info->flags, len, 0);
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space_info->max_extent_size = 0;
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percpu_counter_add(&space_info->total_bytes_pinned, -len);
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if (cache->ro) {
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