diff options
| -rw-r--r-- | fs/btrfs/extent_io.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index f2fdc262534f..10ce1689adca 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -1548,11 +1548,13 @@ error: * @size: portion of page that we want to write to * @pg_offset: offset of the new bio or to check whether we are adding * a contiguous page to the previous one - * @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 * @compress_type: compress type for current bio + * + * The will either add the page into the existing @bio_ctrl->bio, or allocate a + * new one in @bio_ctrl->bio. + * The mirror number for this IO should already be initizlied in + * @bio_ctrl->mirror_num. */ static int submit_extent_page(blk_opf_t opf, struct writeback_control *wbc, |