xfs: Show realtime device stats on statfs calls if realtime flags set

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- Reports realtime device free blocks in statfs calls if (realtime)
  inheritance bit is set on the inode of directory, or realtime flag
  in the case of files.  This is a bit more intuitive, especially for
  use-cases which are using a much larger device for the realtime device.
- Add XFS_IS_REALTIME_MOUNT option to gate based on the existence of a
  realtime device on the mount, similar to the XFS_IS_REALTIME_INODE
  option.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Richard Wareing <rwareing@fb.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

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Richard Wareing 2018-01-08 10:41:33 -08:00 • committed by Darrick J. Wong

parent b2cd1df660

commit a015831596

2 changed files with 10 additions and 0 deletions

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2

fs/xfs/xfs_linux.h

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8

fs/xfs/xfs_super.c

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