Commit 5f57f730 authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

xfs: create rt extent rounding helpers for realtime extent blocks 



Create a pair of functions to round rtblock numbers up or down to the
nearest rt extent.

Signed-off-by: default avatarDarrick J. Wong <djwong@kernel.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
parent 05564124

fs/xfs/libxfs/xfs_rtbitmap.h

+18 −0
Original line number Diff line number Diff line
@@ -84,6 +84,24 @@ xfs_rtb_to_rtxup( 
	return rtbno;

}



/* Round this rtblock up to the nearest rt extent size. */

static inline xfs_rtblock_t

xfs_rtb_roundup_rtx(

	struct xfs_mount	*mp,

	xfs_rtblock_t		rtbno)

{

	return roundup_64(rtbno, mp->m_sb.sb_rextsize);

}



/* Round this rtblock down to the nearest rt extent size. */

static inline xfs_rtblock_t

xfs_rtb_rounddown_rtx(

	struct xfs_mount	*mp,

	xfs_rtblock_t		rtbno)

{

	return rounddown_64(rtbno, mp->m_sb.sb_rextsize);

}



/*

 * Functions for walking free space rtextents in the realtime bitmap.

 */

fs/xfs/xfs_bmap_util.c

+3 −5
Original line number Diff line number Diff line
@@ -684,7 +684,7 @@ xfs_can_free_eofblocks( 
	 */

	end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_ISIZE(ip));

	if (XFS_IS_REALTIME_INODE(ip) && mp->m_sb.sb_rextsize > 1)

		end_fsb = roundup_64(end_fsb, mp->m_sb.sb_rextsize);

		end_fsb = xfs_rtb_roundup_rtx(mp, end_fsb);

	last_fsb = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes);

	if (last_fsb <= end_fsb)

		return false;
@@ -983,10 +983,8 @@ xfs_free_file_space( 


	/* We can only free complete realtime extents. */

	if (XFS_IS_REALTIME_INODE(ip) && mp->m_sb.sb_rextsize > 1) {

		startoffset_fsb = roundup_64(startoffset_fsb,

					     mp->m_sb.sb_rextsize);

		endoffset_fsb = rounddown_64(endoffset_fsb,

					     mp->m_sb.sb_rextsize);

		startoffset_fsb = xfs_rtb_roundup_rtx(mp, startoffset_fsb);

		endoffset_fsb = xfs_rtb_rounddown_rtx(mp, endoffset_fsb);

	}



	/*