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: Darrick J. Wong <djwong@kernel.org>

4 files changed, 25 insertions, 9 deletions

diff --git a/fs/xfs/libxfs/xfs_rtbitmap.h b/fs/xfs/libxfs/xfs_rtbitmap.h
index 689f0a7a56ee..fbed9ae19c51 100644
--- a/fs/xfs/libxfs/xfs_rtbitmap.h
+++ b/fs/xfs/libxfs/xfs_rtbitmap.h
@@ -56,6 +56,24 @@ xfs_rtb_to_rtxt(
 	return div_u64(rtbno, mp->m_sb.sb_rextsize);
 }
 
+/* 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.
  */
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index ce2c0639150d..5e204f107f5a 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -685,7 +685,7 @@ 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;
@@ -984,10 +984,8 @@ xfs_free_file_space(
 
 	/* We can only free complete realtime extents. */
 	if (xfs_inode_has_bigrtextents(ip)) {
-		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);
 	}
 
 	/*
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 1953a00755f4..b74ba5e51cf8 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -1552,8 +1552,8 @@ xfs_rtfile_convert_unwritten(
 	if (mp->m_sb.sb_rextsize == 1)
 		return 0;
 
-	off = rounddown_64(XFS_B_TO_FSBT(mp, pos), mp->m_sb.sb_rextsize);
-	endoff = roundup_64(XFS_B_TO_FSB(mp, pos + len), mp->m_sb.sb_rextsize);
+	off = xfs_rtb_rounddown_rtx(mp, XFS_B_TO_FSBT(mp, pos));
+	endoff = xfs_rtb_roundup_rtx(mp, XFS_B_TO_FSB(mp, pos + len));
 
 	trace_xfs_rtfile_convert_unwritten(ip, pos, len);
 
diff --git a/fs/xfs/xfs_xchgrange.c b/fs/xfs/xfs_xchgrange.c
index 5e5380582f53..1951fcfdb1d9 100644
--- a/fs/xfs/xfs_xchgrange.c
+++ b/fs/xfs/xfs_xchgrange.c
@@ -29,6 +29,7 @@
 #include "xfs_icache.h"
 #include "xfs_log.h"
 #include "xfs_rtalloc.h"
+#include "xfs_rtbitmap.h"
 
 /* Lock (and optionally join) two inodes for a file range exchange. */
 void
@@ -802,8 +803,7 @@ xfs_xchg_range(
 	 * offsets and length in @fxr are safe to round up.
 	 */
 	if (XFS_IS_REALTIME_INODE(ip2))
-		req.blockcount = roundup_64(req.blockcount,
-					    mp->m_sb.sb_rextsize);
+		req.blockcount = xfs_rtb_roundup_rtx(mp, req.blockcount);
 
 	error = xfs_xchg_range_estimate(&req);
 	if (error)