RHEL7 's XFS and Oracle database

Under RHEL7, when you install Oracle database, you have the ability to select XFS files, such as the following:
Requirements for installing Oracle Database 12.1on RHEL7 or OL7 64-bit (x86-64) (document ID 1961997.1)
Requirements for installing Oracle 11.2.0.4 RDBMS on RHEL7 or OL7 64-bit (x86-64) (document ID 1962100.1)
As in the last two articles, XFS is not mentioned. But there are words such as the following:

However, in certification information for Oracle Database on Linux x86-64 (document ID 1304727.1) article. There are, for example, the following words:

XFS-XFS is supported when using OL7 or RHEL 7. Oracle has no tested XFS with earlier versions of OL or RHEL.

Attention. XFS is not supported for X86-64bit,linux 32bit only.

RHEL7 's XFS and Oracle database