From b8b3d625ce67e4d4b994ae8d09308b3ab4f651d8 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Mon, 12 Jun 2017 19:50:41 +0200 Subject: [PATCH] btrfs: document more parameters of submit_extent_page Signed-off-by: David Sterba --- fs/btrfs/extent_io.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index fecf1e5c4f97..f27bad003f8e 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2746,7 +2746,19 @@ static int __must_check submit_one_bio(struct bio *bio, int mirror_num, /* * @opf: bio REQ_OP_* and REQ_* flags as one value + * @tree: tree so we can call our merge_bio hook + * @wbc: optional writeback control for io accounting + * @page: page to add to the bio + * @pg_offset: offset of the new bio or to check whether we are adding + * a contiguous page to the previous one + * @size: portion of page that we want to write + * @offset: starting offset in the page + * @bdev: attach newly created bios to this bdev * @bio_ret: must be valid pointer, newly allocated bio will be stored there + * @end_io_func: end_io callback for new bio + * @mirror_num: desired mirror to read/write + * @prev_bio_flags: flags of previous bio to see if we can merge the current one + * @bio_flags: flags of the current bio to see if we can merge them */ static int submit_extent_page(unsigned int opf, struct extent_io_tree *tree, struct writeback_control *wbc, -- 2.45.2