xfs: convert the rtbitmap block and bit macros to static inline functions

Darrick J. Wong · Darrick J. Wong · commit 90d98a6ada1d · 2023-10-17T16:26:25.000-07:00
Replace these macros with typechecked helper functions.  Eventually
we're going to add more logic to the helpers and it'll be easier if we
don't have to macro it up.

Signed-off-by: Darrick J. Wong &lt;djwong@kernel.org&gt;
Reviewed-by: Christoph Hellwig &lt;hch@lst.de&gt;
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
@@ -1155,11 +1155,6 @@ static inline bool xfs_dinode_has_large_extent_counts(
 	((xfs_suminfo_t *)((bp)->b_addr + \
 		(((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp))))
 
-#define	XFS_BITTOBLOCK(mp,bi)	((bi) >> (mp)->m_blkbit_log)
-#define	XFS_BLOCKTOBIT(mp,bb)	((bb) << (mp)->m_blkbit_log)
-#define	XFS_BITTOWORD(mp,bi)	\
-	((int)(((bi) >> XFS_NBWORDLOG) & XFS_BLOCKWMASK(mp)))
-
 #define	XFS_RTMIN(a,b)	((a) < (b) ? (a) : (b))
 #define	XFS_RTMAX(a,b)	((a) > (b) ? (a) : (b))
 
diff --git a/fs/xfs/libxfs/xfs_rtbitmap.c b/fs/xfs/libxfs/xfs_rtbitmap.c
@@ -111,12 +111,12 @@ xfs_rtfind_back(
 	xfs_rtword_t	mask;		/* mask of relevant bits for value */
 	xfs_rtword_t	want;		/* mask for "good" values */
 	xfs_rtword_t	wdiff;		/* difference from wanted value */
-	int		word;		/* word number in the buffer */
+	unsigned int	word;		/* word number in the buffer */
 
 	/*
 	 * Compute and read in starting bitmap block for starting block.
 	 */
-	block = XFS_BITTOBLOCK(mp, start);
+	block = xfs_rtx_to_rbmblock(mp, start);
 	error = xfs_rtbuf_get(mp, tp, block, 0, &bp);
 	if (error) {
 		return error;
@@ -125,7 +125,7 @@ xfs_rtfind_back(
 	/*
 	 * Get the first word's index & point to it.
 	 */
-	word = XFS_BITTOWORD(mp, start);
+	word = xfs_rtx_to_rbmword(mp, start);
 	b = &bufp[word];
 	bit = (int)(start & (XFS_NBWORD - 1));
 	len = start - limit + 1;
@@ -286,12 +286,12 @@ xfs_rtfind_forw(
 	xfs_rtword_t	mask;		/* mask of relevant bits for value */
 	xfs_rtword_t	want;		/* mask for "good" values */
 	xfs_rtword_t	wdiff;		/* difference from wanted value */
-	int		word;		/* word number in the buffer */
+	unsigned int	word;		/* word number in the buffer */
 
 	/*
 	 * Compute and read in starting bitmap block for starting block.
 	 */
-	block = XFS_BITTOBLOCK(mp, start);
+	block = xfs_rtx_to_rbmblock(mp, start);
 	error = xfs_rtbuf_get(mp, tp, block, 0, &bp);
 	if (error) {
 		return error;
@@ -300,7 +300,7 @@ xfs_rtfind_forw(
 	/*
 	 * Get the first word's index & point to it.
 	 */
-	word = XFS_BITTOWORD(mp, start);
+	word = xfs_rtx_to_rbmword(mp, start);
 	b = &bufp[word];
 	bit = (int)(start & (XFS_NBWORD - 1));
 	len = limit - start + 1;
@@ -547,12 +547,12 @@ xfs_rtmodify_range(
 	int		i;		/* current bit number rel. to start */
 	int		lastbit;	/* last useful bit in word */
 	xfs_rtword_t	mask;		/* mask o frelevant bits for value */
-	int		word;		/* word number in the buffer */
+	unsigned int	word;		/* word number in the buffer */
 
 	/*
 	 * Compute starting bitmap block number.
 	 */
-	block = XFS_BITTOBLOCK(mp, start);
+	block = xfs_rtx_to_rbmblock(mp, start);
 	/*
 	 * Read the bitmap block, and point to its data.
 	 */
@@ -564,7 +564,7 @@ xfs_rtmodify_range(
 	/*
 	 * Compute the starting word's address, and starting bit.
 	 */
-	word = XFS_BITTOWORD(mp, start);
+	word = xfs_rtx_to_rbmword(mp, start);
 	first = b = &bufp[word];
 	bit = (int)(start & (XFS_NBWORD - 1));
 	/*
@@ -730,7 +730,7 @@ xfs_rtfree_range(
 	if (preblock < start) {
 		error = xfs_rtmodify_summary(mp, tp,
 			XFS_RTBLOCKLOG(start - preblock),
-			XFS_BITTOBLOCK(mp, preblock), -1, rbpp, rsb);
+			xfs_rtx_to_rbmblock(mp, preblock), -1, rbpp, rsb);
 		if (error) {
 			return error;
 		}
@@ -742,7 +742,7 @@ xfs_rtfree_range(
 	if (postblock > end) {
 		error = xfs_rtmodify_summary(mp, tp,
 			XFS_RTBLOCKLOG(postblock - end),
-			XFS_BITTOBLOCK(mp, end + 1), -1, rbpp, rsb);
+			xfs_rtx_to_rbmblock(mp, end + 1), -1, rbpp, rsb);
 		if (error) {
 			return error;
 		}
@@ -753,7 +753,7 @@ xfs_rtfree_range(
 	 */
 	error = xfs_rtmodify_summary(mp, tp,
 		XFS_RTBLOCKLOG(postblock + 1 - preblock),
-		XFS_BITTOBLOCK(mp, preblock), 1, rbpp, rsb);
+		xfs_rtx_to_rbmblock(mp, preblock), 1, rbpp, rsb);
 	return error;
 }
 
@@ -781,12 +781,12 @@ xfs_rtcheck_range(
 	xfs_rtxnum_t	lastbit;	/* last useful bit in word */
 	xfs_rtword_t	mask;		/* mask of relevant bits for value */
 	xfs_rtword_t	wdiff;		/* difference from wanted value */
-	int		word;		/* word number in the buffer */
+	unsigned int	word;		/* word number in the buffer */
 
 	/*
 	 * Compute starting bitmap block number
 	 */
-	block = XFS_BITTOBLOCK(mp, start);
+	block = xfs_rtx_to_rbmblock(mp, start);
 	/*
 	 * Read the bitmap block.
 	 */
@@ -798,7 +798,7 @@ xfs_rtcheck_range(
 	/*
 	 * Compute the starting word's address, and starting bit.
 	 */
-	word = XFS_BITTOWORD(mp, start);
+	word = xfs_rtx_to_rbmword(mp, start);
 	b = &bufp[word];
 	bit = (int)(start & (XFS_NBWORD - 1));
 	/*
diff --git a/fs/xfs/libxfs/xfs_rtbitmap.h b/fs/xfs/libxfs/xfs_rtbitmap.h
@@ -131,6 +131,33 @@ xfs_rtb_rounddown_rtx(
 	return rounddown_64(rtbno, mp->m_sb.sb_rextsize);
 }
 
+/* Convert an rt extent number to a file block offset in the rt bitmap file. */
+static inline xfs_fileoff_t
+xfs_rtx_to_rbmblock(
+	struct xfs_mount	*mp,
+	xfs_rtxnum_t		rtx)
+{
+	return rtx >> mp->m_blkbit_log;
+}
+
+/* Convert an rt extent number to a word offset within an rt bitmap block. */
+static inline unsigned int
+xfs_rtx_to_rbmword(
+	struct xfs_mount	*mp,
+	xfs_rtxnum_t		rtx)
+{
+	return (rtx >> XFS_NBWORDLOG) & XFS_BLOCKWMASK(mp);
+}
+
+/* Convert a file block offset in the rt bitmap file to an rt extent number. */
+static inline xfs_rtxnum_t
+xfs_rbmblock_to_rtx(
+	struct xfs_mount	*mp,
+	xfs_fileoff_t		rbmoff)
+{
+	return rbmoff << mp->m_blkbit_log;
+}
+
 /*
  * Functions for walking free space rtextents in the realtime bitmap.
  */
diff --git a/fs/xfs/scrub/rtsummary.c b/fs/xfs/scrub/rtsummary.c
@@ -130,7 +130,7 @@ xchk_rtsum_record_free(
 		return error;
 
 	/* Compute the relevant location in the rtsum file. */
-	rbmoff = XFS_BITTOBLOCK(mp, rec->ar_startext);
+	rbmoff = xfs_rtx_to_rbmblock(mp, rec->ar_startext);
 	lenlog = XFS_RTBLOCKLOG(rec->ar_extcount);
 	offs = XFS_SUMOFFS(mp, lenlog, rbmoff);
 
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
@@ -177,7 +177,7 @@ xfs_rtallocate_range(
 	 */
 	error = xfs_rtmodify_summary(mp, tp,
 		XFS_RTBLOCKLOG(postblock + 1 - preblock),
-		XFS_BITTOBLOCK(mp, preblock), -1, rbpp, rsb);
+		xfs_rtx_to_rbmblock(mp, preblock), -1, rbpp, rsb);
 	if (error) {
 		return error;
 	}
@@ -188,7 +188,7 @@ xfs_rtallocate_range(
 	if (preblock < start) {
 		error = xfs_rtmodify_summary(mp, tp,
 			XFS_RTBLOCKLOG(start - preblock),
-			XFS_BITTOBLOCK(mp, preblock), 1, rbpp, rsb);
+			xfs_rtx_to_rbmblock(mp, preblock), 1, rbpp, rsb);
 		if (error) {
 			return error;
 		}
@@ -200,7 +200,7 @@ xfs_rtallocate_range(
 	if (postblock > end) {
 		error = xfs_rtmodify_summary(mp, tp,
 			XFS_RTBLOCKLOG(postblock - end),
-			XFS_BITTOBLOCK(mp, end + 1), 1, rbpp, rsb);
+			xfs_rtx_to_rbmblock(mp, end + 1), 1, rbpp, rsb);
 		if (error) {
 			return error;
 		}
@@ -261,8 +261,8 @@ xfs_rtallocate_extent_block(
 	 * Loop over all the extents starting in this bitmap block,
 	 * looking for one that's long enough.
 	 */
-	for (i = XFS_BLOCKTOBIT(mp, bbno), besti = -1, bestlen = 0,
-		end = XFS_BLOCKTOBIT(mp, bbno + 1) - 1;
+	for (i = xfs_rbmblock_to_rtx(mp, bbno), besti = -1, bestlen = 0,
+		end = xfs_rbmblock_to_rtx(mp, bbno + 1) - 1;
 	     i <= end;
 	     i++) {
 		/* Make sure we don't scan off the end of the rt volume. */
@@ -489,7 +489,7 @@ xfs_rtallocate_extent_near(
 		*rtx = r;
 		return 0;
 	}
-	bbno = XFS_BITTOBLOCK(mp, start);
+	bbno = xfs_rtx_to_rbmblock(mp, start);
 	i = 0;
 	ASSERT(minlen != 0);
 	log2len = xfs_highbit32(minlen);
@@ -708,8 +708,8 @@ xfs_rtallocate_extent_size(
 			 * allocator is beyond the next bitmap block,
 			 * skip to that bitmap block.
 			 */
-			if (XFS_BITTOBLOCK(mp, n) > i + 1)
-				i = XFS_BITTOBLOCK(mp, n) - 1;
+			if (xfs_rtx_to_rbmblock(mp, n) > i + 1)
+				i = xfs_rtx_to_rbmblock(mp, n) - 1;
 		}
 	}
 	/*
@@ -771,8 +771,8 @@ xfs_rtallocate_extent_size(
 			 * allocator is beyond the next bitmap block,
 			 * skip to that bitmap block.
 			 */
-			if (XFS_BITTOBLOCK(mp, n) > i + 1)
-				i = XFS_BITTOBLOCK(mp, n) - 1;
+			if (xfs_rtx_to_rbmblock(mp, n) > i + 1)
+				i = xfs_rtx_to_rbmblock(mp, n) - 1;
 		}
 	}
 	/*
