btrfs: change root->root_key.objectid to btrfs_root_id()

A comment from Filipe on one of my previous cleanups brought my
attention to a new helper we have for getting the root id of a root,
which makes it easier to read in the code.

The changes where made with the following Coccinelle semantic patch:

// <smpl>
@@
expression E,E1;
@@
(
 E->root_key.objectid = E1
|
- E->root_key.objectid
+ btrfs_root_id(E)
)
// </smpl>

Reviewed-by: Filipe Manana <[email protected]>
Signed-off-by: Josef Bacik <[email protected]>
Reviewed-by: David Sterba <[email protected]>
[ minor style fixups ]
Signed-off-by: David Sterba <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index c981903c8cd7..6441e47d8a5e 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -992,7 +992,7 @@ int btrfs_compress_filemap_get_folio(struct address_space *mapping, u64 start,
 
 		btrfs_crit(inode->root->fs_info,
 		"failed to get page cache, root %lld ino %llu file offset %llu",
-			   inode->root->root_key.objectid, btrfs_ino(inode), start);
+			   btrfs_root_id(inode->root), btrfs_ino(inode), start);
 		return -ENOENT;
 	}
 	*in_folio_ret = in_folio;