The original comment is from the initial merge, which has several problems: - No holes check any more - No inline decision is made
Update the out-of-date comment with more correct one. Signed-off-by: Qu Wenruo <[email protected]> --- fs/btrfs/file.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index e65223e3510d..1602975ddb88 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -453,12 +453,11 @@ static void btrfs_drop_pages(struct page **pages, size_t num_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. + * - Marks modified pages as Uptodate/Dirty and not needing cowfixup + * - 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, -- 2.29.2
