btrfs: update comment for btrfs_dirty_pages

}

/*

 * after copy_from_user, pages need to be dirtied and we need to make

 * sure holes are created between the current EOF and the start of

 * any next extents (if required).

 *

 * this also makes the decision about creating an inline extent vs

 * doing real data extents, marking pages dirty and delalloc as required.

 * After btrfs_copy_from_user(), update the following things for delalloc:

 * - Mark newly dirtied pages as DELALLOC in the io tree.

 *   Used to advise which range is to be written back.

 * - Mark modified pages as Uptodate/Dirty and not needing COW fixup

 * - Update inode size for past EOF write

 */

int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages,

		      size_t num_pages, loff_t pos, size_t write_bytes,