base/SOURCES/xfsprogs-4.12.0-xfs_db-improve-argument-naming-in-set_cur-and-set_io.patch

From db23e0f431a77d228b5f68ef0a8587c25c689133 Mon Sep 17 00:00:00 2001
From: Bill O'Donnell <billodo@redhat.com>
Date: Thu, 29 Jun 2017 13:05:00 -0500
Subject: [PATCH] xfs_db: improve argument naming in set_cur and set_iocur_type

In set_cur and set_iocur_type, the current naming for arguments
type, block number, and length are t, d, and c, respectively.
Replace these with more intuitive and descriptive names:
type, blknum, and len. Fix type of blknum (xfs_daddr_t) to be
consistent with that of libxfs_readbuf where it's used.
Additionally remove extra blank line in io.c.

Signed-off-by: Bill O'Donnell <billodo@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
---
 db/io.c | 38 +++++++++++++++++++-------------------
 db/io.h |  6 +++---
 2 files changed, 22 insertions(+), 22 deletions(-)

Index: xfsprogs-rhel7.5/db/io.c
===================================================================
--- xfsprogs-rhel7.5.orig/db/io.c
+++ xfsprogs-rhel7.5/db/io.c
@@ -487,9 +487,9 @@ write_cur(void)

 void
 set_cur(
-	const typ_t	*t,
-	__int64_t	d,
-	int		c,
+	const typ_t	*type,
+	xfs_daddr_t	blknum,
+	int		len,
	int             ring_flag,
	bbmap_t		*bbmap)
 {
@@ -497,14 +497,13 @@ set_cur(
	xfs_ino_t	dirino;
	xfs_ino_t	ino;
	__uint16_t	mode;
-	const struct xfs_buf_ops *ops = t ? t->bops : NULL;
+	const struct xfs_buf_ops *ops = type ? type->bops : NULL;

	if (iocur_sp < 0) {
		dbprintf(_("set_cur no stack element to set\n"));
		return;
	}

-
	ino = iocur_top->ino;
	dirino = iocur_top->dirino;
	mode = iocur_top->mode;
@@ -514,7 +513,7 @@ set_cur(
	if (bbmap) {
 #ifdef DEBUG_BBMAP
		int i;
-		printf(_("xfs_db got a bbmap for %lld\n"), (long long)d);
+		printf(_("xfs_db got a bbmap for %lld\n"), (long long)blknum);
		printf(_("\tblock map"));
		for (i = 0; i < bbmap->nmaps; i++)
			printf(" %lld:%d", (long long)bbmap->b[i].bm_bn,
@@ -528,7 +527,7 @@ set_cur(
		bp = libxfs_readbuf_map(mp->m_ddev_targp, bbmap->b,
					bbmap->nmaps, 0, ops);
	} else {
-		bp = libxfs_readbuf(mp->m_ddev_targp, d, c, 0, ops);
+		bp = libxfs_readbuf(mp->m_ddev_targp, blknum, len, 0, ops);
		iocur_top->bbmap = NULL;
	}

@@ -544,13 +543,13 @@ set_cur(
	if (!ops)
		bp->b_flags |= LIBXFS_B_UNCHECKED;

-	iocur_top->bb = d;
-	iocur_top->blen = c;
+	iocur_top->bb = blknum;
+	iocur_top->blen = len;
	iocur_top->boff = 0;
	iocur_top->data = iocur_top->buf;
-	iocur_top->len = BBTOB(c);
-	iocur_top->off = d << BBSHIFT;
-	iocur_top->typ = cur_typ = t;
+	iocur_top->len = BBTOB(len);
+	iocur_top->off = blknum << BBSHIFT;
+	iocur_top->typ = cur_typ = type;
	iocur_top->ino = ino;
	iocur_top->dirino = dirino;
	iocur_top->mode = mode;
@@ -564,23 +563,24 @@ set_cur(

 void
 set_iocur_type(
-	const typ_t	*t)
+	const typ_t	*type)
 {
	struct xfs_buf	*bp = iocur_top->bp;

	/* adjust buffer size for types with fields & hence fsize() */
-	if (t->fields) {
+	if (type->fields) {
		int bb_count;	/* type's size in basic blocks */

-		bb_count = BTOBB(byteize(fsize(t->fields, iocur_top->data, 0, 0)));
-		set_cur(t, iocur_top->bb, bb_count, DB_RING_IGN, NULL);
+		bb_count = BTOBB(byteize(fsize(type->fields,
+					       iocur_top->data, 0, 0)));
+		set_cur(type, iocur_top->bb, bb_count, DB_RING_IGN, NULL);
	}
-	iocur_top->typ = t;
+	iocur_top->typ = type;

	/* verify the buffer if the type has one. */
	if (!bp)
		return;
-	if (!t->bops) {
+	if (!type->bops) {
		bp->b_ops = NULL;
		bp->b_flags |= LIBXFS_B_UNCHECKED;
		return;
@@ -588,7 +588,7 @@ set_iocur_type(
	if (!(bp->b_flags & LIBXFS_B_UPTODATE))
		return;
	bp->b_error = 0;
-	bp->b_ops = t->bops;
+	bp->b_ops = type->bops;
	bp->b_ops->verify_read(bp);
	bp->b_flags &= ~LIBXFS_B_UNCHECKED;
 }
Index: xfsprogs-rhel7.5/db/io.h
===================================================================
--- xfsprogs-rhel7.5.orig/db/io.h
+++ xfsprogs-rhel7.5/db/io.h
@@ -59,10 +59,10 @@ extern void	print_iocur(char *tag, iocur
 extern void	push_cur(void);
 extern int	read_buf(__int64_t daddr, int count, void *bufp);
 extern void     write_cur(void);
-extern void	set_cur(const struct typ *t, __int64_t d, int c, int ring_add,
-			bbmap_t *bbmap);
+extern void	set_cur(const struct typ *type, xfs_daddr_t blknum,
+			int len, int ring_add, bbmap_t *bbmap);
 extern void     ring_add(void);
-extern void	set_iocur_type(const struct typ *t);
+extern void	set_iocur_type(const struct typ *type);
 extern void	xfs_dummy_verify(struct xfs_buf *bp);

 /*