btrfs: open code end_extent_writepage in end_bio_extent_writepage

This prepares for switching to more efficient ordered_extent processing
and already removes the forth and back conversion from len to end back to
len.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index ad536ea..827e8df 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -536,8 +536,6 @@ static void end_bio_extent_writepage(struct btrfs_bio *bbio)
        struct bio *bio = &bbio->bio;
        int error = blk_status_to_errno(bio->bi_status);
        struct bio_vec *bvec;
-       u64 start;
-       u64 end;
        struct bvec_iter_all iter_all;
 
        ASSERT(!bio_flagged(bio, BIO_CLONED));
@@ -546,6 +544,8 @@ static void end_bio_extent_writepage(struct btrfs_bio *bbio)
                struct inode *inode = page->mapping->host;
                struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
                const u32 sectorsize = fs_info->sectorsize;
+               u64 start = page_offset(page) + bvec->bv_offset;
+               u32 len = bvec->bv_len;
 
                /* Our read/write should always be sector aligned. */
                if (!IS_ALIGNED(bvec->bv_offset, sectorsize))
@@ -557,12 +557,13 @@ static void end_bio_extent_writepage(struct btrfs_bio *bbio)
                "incomplete page write with offset %u and length %u",
                                   bvec->bv_offset, bvec->bv_len);
 
-               start = page_offset(page) + bvec->bv_offset;
-               end = start + bvec->bv_len - 1;
-
-               end_extent_writepage(page, error, start, end);
-
-               btrfs_page_clear_writeback(fs_info, page, start, bvec->bv_len);
+               btrfs_writepage_endio_finish_ordered(BTRFS_I(inode), page, start,
+                                                    start + len - 1, !error);
+               if (error) {
+                       btrfs_page_clear_uptodate(fs_info, page, start, len);
+                       mapping_set_error(page->mapping, error);
+               }
+               btrfs_page_clear_writeback(fs_info, page, start, len);
        }
 
        bio_put(bio);