btrfs: Remove extent_io_ops::fill_delalloc

This callback is called only from writepage_delalloc which in turn is
guaranteed to be called from the data page writeout path. In the end
there is no reason to have the call to this function to be indrected via
the extent_io_ops structure. This patch removes the callback definition,
exports the function and calls it directly. No functional changes.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ rename to btrfs_run_delalloc_range ]
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 68f322f600a0..3a4d19e6a8e9 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3189,6 +3189,9 @@ int btrfs_prealloc_file_range_trans(struct inode *inode,
                                     struct btrfs_trans_handle *trans, int mode,
                                     u64 start, u64 num_bytes, u64 min_size,
                                     loff_t actual_len, u64 *alloc_hint);
+int btrfs_run_delalloc_range(void *private_data, struct page *locked_page,
+                u64 start, u64 end, int *page_started, unsigned long *nr_written,
+                struct writeback_control *wbc);
 extern const struct dentry_operations btrfs_dentry_operations;
 
 /* ioctl.c */