xfs: change return value of xfs_inode_need_cow to int

Fixes coccicheck warning:

fs/xfs/xfs_reflink.c:236:9-10: WARNING: return of 0/1 in function 'xfs_inode_need_cow' with return type bool

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
[darrick: rename the function so it doesn't sound like a predicate]
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index 7a6c942..e723b26 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -223,8 +223,8 @@ xfs_reflink_trim_around_shared(
 	}
 }
 
-bool
-xfs_inode_need_cow(
+int
+xfs_bmap_trim_cow(
 	struct xfs_inode	*ip,
 	struct xfs_bmbt_irec	*imap,
 	bool			*shared)
@@ -327,7 +327,7 @@ xfs_find_trim_cow_extent(
 	if (cmap->br_startoff > offset_fsb) {
 		xfs_trim_extent(imap, imap->br_startoff,
 				cmap->br_startoff - imap->br_startoff);
-		return xfs_inode_need_cow(ip, imap, shared);
+		return xfs_bmap_trim_cow(ip, imap, shared);
 	}
 
 	*shared = true;