btrfs: qgroup: Add handler for NOCOW and inline (94ed938a) · Commits · 戴 / test

fs/btrfs/extent-tree.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -4052,7 +4052,12 @@ int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len)
		if (ret < 0)
		return ret;

		/* Use new btrfs_qgroup_reserve_data to reserve precious data space */
		/*
		* Use new btrfs_qgroup_reserve_data to reserve precious data space
		*
		* TODO: Find a good method to avoid reserve data space for NOCOW
		* range, but don't impact performance on quota disable case.
		*/
		ret = btrfs_qgroup_reserve_data(inode, start, len);
		return ret;
		}

+15 −0

Original line number	Diff line number	Diff line
		@@ -310,6 +310,13 @@ static noinline int cow_file_range_inline(struct btrfs_root *root,
		btrfs_delalloc_release_metadata(inode, end + 1 - start);
		btrfs_drop_extent_cache(inode, start, aligned_end - 1, 0);
		out:
		/*
		* Don't forget to free the reserved space, as for inlined extent
		* it won't count as data extent, free them directly here.
		* And at reserve time, it's always aligned to page size, so
		* just free one page here.
		*/
		btrfs_qgroup_free_data(inode, 0, PAGE_CACHE_SIZE);
		btrfs_free_path(path);
		btrfs_end_transaction(trans, root);
		return ret;
		@@ -2838,6 +2845,14 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent)

		if (test_bit(BTRFS_ORDERED_NOCOW, &ordered_extent->flags)) {
		BUG_ON(!list_empty(&ordered_extent->list)); /* Logic error */

		/*
		* For mwrite(mmap + memset to write) case, we still reserve
		* space for NOCOW range.
		* As NOCOW won't cause a new delayed ref, just free the space
		*/
		btrfs_qgroup_free_data(inode, ordered_extent->file_offset,
		ordered_extent->len);
		btrfs_ordered_update_i_size(inode, 0, ordered_extent);
		if (nolock)
		trans = btrfs_join_transaction_nolock(root);