btrfs: comment and minor simplifications in run_delalloc_nocow (e8e21007) · Commits · 戴 / test

Add a comment explaining why we keep the BUG also use the already read and cached value of extent ram bytes stored in 'ram_bytes'. Signed-off-by:

fs/btrfs/inode.c

+3 −4

Original line number	Diff line number	Diff line
		@@ -1503,16 +1503,15 @@ next_slot:
		goto out_check;
		nocow = true;
		} else if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
		extent_end = found_key.offset +
		btrfs_file_extent_ram_bytes(leaf, fi);
		extent_end = ALIGN(extent_end,
		fs_info->sectorsize);
		extent_end = found_key.offset + ram_bytes;
		extent_end = ALIGN(extent_end, fs_info->sectorsize);
		/* Skip extents outside of our requested range */
		if (extent_end <= start) {
		path->slots[0]++;
		goto next_slot;
		}
		} else {
		/* If this triggers then we have a memory corruption */
		BUG();
		}
		out_check: