btrfs: cleanup duplicated parameters related to btrfs_alloc_ordered_extent

All parameters after @filepos of btrfs_alloc_ordered_extent() can be
replaced with btrfs_file_extent structure.

This patch does the cleanup, meanwhile some points to note:

- Move btrfs_file_extent structure to ordered-data.h
  The structure is needed by both btrfs_alloc_ordered_extent() and
  can_nocow_extent(), but since btrfs_inode.h includes
  ordered-data.h, so we need to move the structure to ordered-data.h.

- Move the special handling of NOCOW/PREALLOC into
  btrfs_alloc_ordered_extent()
  This is to allow btrfs_split_ordered_extent() to properly split them
  for DIO.
  For now just move the handling into btrfs_alloc_ordered_extent() to
  simplify the callers.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 0 insertions, 13 deletions

diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index be2f66f29b0c..db193b3be8eb 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -514,19 +514,6 @@ int btrfs_check_sector_csum(struct btrfs_fs_info *fs_info, struct page *page,
 			    u32 pgoff, u8 *csum, const u8 * const csum_expected);
 bool btrfs_data_csum_ok(struct btrfs_bio *bbio, struct btrfs_device *dev,
 			u32 bio_offset, struct bio_vec *bv);
-
-/*
- * This represents details about the target file extent item of a write operation.
- */
-struct btrfs_file_extent {
-	u64 disk_bytenr;
-	u64 disk_num_bytes;
-	u64 num_bytes;
-	u64 ram_bytes;
-	u64 offset;
-	u8 compression;
-};
-
 noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
 			      struct btrfs_file_extent *file_extent,
 			      bool nowait, bool strict);