Commit e09caaf9 authored by Qu Wenruo's avatar Qu Wenruo Committed by David Sterba
Browse files

btrfs: introduce helper to handle page status update in end_bio_extent_readpage() 



Introduce a new helper to handle update page status in
end_bio_extent_readpage(). This will be later used for subpage support
where the page status update can be more complex than now.

Signed-off-by: default avatarQu Wenruo <wqu@suse.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 94e8c95c

fs/btrfs/extent_io.c

+13 −5
Original line number Diff line number Diff line
@@ -2842,6 +2842,17 @@ static void endio_readpage_release_extent(struct processed_extent *processed, 
	processed->uptodate = uptodate;

}



static void endio_readpage_update_page_status(struct page *page, bool uptodate)

{

	if (uptodate) {

		SetPageUptodate(page);

	} else {

		ClearPageUptodate(page);

		SetPageError(page);

	}

	unlock_page(page);

}



/*

 * after a readpage IO is done, we need to:

 * clear the uptodate bits on error
@@ -2964,14 +2975,11 @@ static void end_bio_extent_readpage(struct bio *bio) 
			off = offset_in_page(i_size);

			if (page->index == end_index && off)

				zero_user_segment(page, off, PAGE_SIZE);

			SetPageUptodate(page);

		} else {

			ClearPageUptodate(page);

			SetPageError(page);

		}

		unlock_page(page);

		offset += len;



		/* Update page status and unlock */

		endio_readpage_update_page_status(page, uptodate);

		endio_readpage_release_extent(&processed, BTRFS_I(inode),

					      start, end, uptodate);

	}