[51/67] xfs: split xfs_rtmodify_summary_int

Commit Message

Darrick J. Wong April 17, 2024, 9:35 p.m. UTC

From: Christoph Hellwig <[e-mail]>

Source kernel commit: b271b314119eca1fb98a2c4e15304ce562802f0c

Inline the logic of xfs_rtmodify_summary_int into xfs_rtmodify_summary
and xfs_rtget_summary instead of having a somewhat awkward helper to
share a little bit of code.

Signed-off-by: Christoph Hellwig <[e-mail]>
Reviewed-by: "Darrick J. Wong" <[e-mail]>
Signed-off-by: Chandan Babu R <[e-mail]>
Reviewed-by: Bill O'Donnell <[e-mail]>
---
 libxfs/xfs_rtbitmap.c |   90 +++++++++++++++++--------------------------------
 1 file changed, 32 insertions(+), 58 deletions(-)

Patch

diff --git a/libxfs/xfs_rtbitmap.c b/libxfs/xfs_rtbitmap.c
index adeaffed7..bbf955be8 100644
--- a/libxfs/xfs_rtbitmap.c
+++ b/libxfs/xfs_rtbitmap.c
@@ -450,63 +450,9 @@  xfs_trans_log_rtsummary(
 }
 
 /*
- * Read and/or modify the summary information for a given extent size,
- * bitmap block combination.
- * Keeps track of a current summary block, so we don't keep reading
- * it from the buffer cache.
- *
- * Summary information is returned in *sum if specified.
- * If no delta is specified, returns summary only.
+ * Modify the summary information for a given extent size, bitmap block
+ * combination.
  */
-int
-xfs_rtmodify_summary_int(
-	struct xfs_rtalloc_args	*args,
-	int			log,	/* log2 of extent size */
-	xfs_fileoff_t		bbno,	/* bitmap block number */
-	int			delta,	/* change to make to summary info */
-	xfs_suminfo_t		*sum)	/* out: summary info for this block */
-{
-	struct xfs_mount	*mp = args->mp;
-	int			error;
-	xfs_fileoff_t		sb;	/* summary fsblock */
-	xfs_rtsumoff_t		so;	/* index into the summary file */
-	unsigned int		infoword;
-
-	/*
-	 * Compute entry number in the summary file.
-	 */
-	so = xfs_rtsumoffs(mp, log, bbno);
-	/*
-	 * Compute the block number in the summary file.
-	 */
-	sb = xfs_rtsumoffs_to_block(mp, so);
-
-	error = xfs_rtsummary_read_buf(args, sb);
-	if (error)
-		return error;
-
-	/*
-	 * Point to the summary information, modify/log it, and/or copy it out.
-	 */
-	infoword = xfs_rtsumoffs_to_infoword(mp, so);
-	if (delta) {
-		xfs_suminfo_t	val = xfs_suminfo_add(args, infoword, delta);
-
-		if (mp->m_rsum_cache) {
-			if (val == 0 && log + 1 == mp->m_rsum_cache[bbno])
-				mp->m_rsum_cache[bbno] = log;
-			if (val != 0 && log >= mp->m_rsum_cache[bbno])
-				mp->m_rsum_cache[bbno] = log + 1;
-		}
-		xfs_trans_log_rtsummary(args, infoword);
-		if (sum)
-			*sum = val;
-	} else if (sum) {
-		*sum = xfs_suminfo_get(args, infoword);
-	}
-	return 0;
-}
-
 int
 xfs_rtmodify_summary(
 	struct xfs_rtalloc_args	*args,
@@ -514,7 +460,28 @@  xfs_rtmodify_summary(
 	xfs_fileoff_t		bbno,	/* bitmap block number */
 	int			delta)	/* in/out: summary block number */
 {
-	return xfs_rtmodify_summary_int(args, log, bbno, delta, NULL);
+	struct xfs_mount	*mp = args->mp;
+	xfs_rtsumoff_t		so = xfs_rtsumoffs(mp, log, bbno);
+	unsigned int		infoword;
+	xfs_suminfo_t		val;
+	int			error;
+
+	error = xfs_rtsummary_read_buf(args, xfs_rtsumoffs_to_block(mp, so));
+	if (error)
+		return error;
+
+	infoword = xfs_rtsumoffs_to_infoword(mp, so);
+	val = xfs_suminfo_add(args, infoword, delta);
+
+	if (mp->m_rsum_cache) {
+		if (val == 0 && log + 1 == mp->m_rsum_cache[bbno])
+			mp->m_rsum_cache[bbno] = log;
+		if (val != 0 && log >= mp->m_rsum_cache[bbno])
+			mp->m_rsum_cache[bbno] = log + 1;
+	}
+
+	xfs_trans_log_rtsummary(args, infoword);
+	return 0;
 }
 
 /*
@@ -528,7 +495,14 @@  xfs_rtget_summary(
 	xfs_fileoff_t		bbno,	/* bitmap block number */
 	xfs_suminfo_t		*sum)	/* out: summary info for this block */
 {
-	return xfs_rtmodify_summary_int(args, log, bbno, 0, sum);
+	struct xfs_mount	*mp = args->mp;
+	xfs_rtsumoff_t		so = xfs_rtsumoffs(mp, log, bbno);
+	int			error;
+
+	error = xfs_rtsummary_read_buf(args, xfs_rtsumoffs_to_block(mp, so));
+	if (!error)
+		*sum = xfs_suminfo_get(args, xfs_rtsumoffs_to_infoword(mp, so));
+	return error;
 }
 
 /* Log rtbitmap block from the word @from to the byte before @next. */