xfs: Show realtime device stats on statfs calls if realtime flags set (a0158315) · Commits · 戴 / test

- 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>

fs/xfs/xfs_linux.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -285,8 +285,10 @@ static inline uint64_t howmany_64(uint64_t x, uint32_t y)
		#define XFS_IS_REALTIME_INODE(ip) \
		(((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) && \
		(ip)->i_mount->m_rtdev_targp)
		#define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0)
		#else
		#define XFS_IS_REALTIME_INODE(ip) (0)
		#define XFS_IS_REALTIME_MOUNT(mp) (0)
		#endif

		#endif /* __XFS_LINUX__ */

fs/xfs/xfs_super.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -1153,6 +1153,14 @@ xfs_fs_statfs(
		((mp->m_qflags & (XFS_PQUOTA_ACCT\|XFS_PQUOTA_ENFD))) ==
		(XFS_PQUOTA_ACCT\|XFS_PQUOTA_ENFD))
		xfs_qm_statvfs(ip, statp);

		if (XFS_IS_REALTIME_MOUNT(mp) &&
		(ip->i_d.di_flags & (XFS_DIFLAG_RTINHERIT \| XFS_DIFLAG_REALTIME))) {
		statp->f_blocks = sbp->sb_rblocks;
		statp->f_bavail = statp->f_bfree =
		sbp->sb_frextents * sbp->sb_rextsize;
		}

		return 0;
		}

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