[PATCH 13/13] xfs_{db,repair}: use m_blockwsize instead of sb_blocksize for rt blocks

["Darrick J. Wong" <djwong@xxxxxxxxxx>]

From: Darrick J. Wong <djwong@xxxxxxxxxx>

In preparation to add block headers to rt bitmap and summary blocks,
convert all the relevant calculations in the userspace tools to use the
per-block word count instead of the raw blocksize.  This is key to
adding this support outside of libxfs.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Bill O'Donnell <bodonnel@xxxxxxxxxx>
---
 db/check.c      |    4 ++--
 repair/phase6.c |    4 ++--
 repair/rt.c     |    9 +++++----
 3 files changed, 9 insertions(+), 8 deletions(-)


diff --git a/db/check.c b/db/check.c
index 103ea4022c3b..2f2fbc7cbd81 100644
--- a/db/check.c
+++ b/db/check.c
@@ -3630,7 +3630,7 @@ process_rtbitmap(
 	int		t;
 	xfs_rtword_t	*words;
 
-	bitsperblock = mp->m_sb.sb_blocksize * NBBY;
+	bitsperblock = mp->m_blockwsize << XFS_NBWORDLOG;
 	words = malloc(mp->m_blockwsize << XFS_WORDLOG);
 	if (!words) {
 		dbprintf(_("could not allocate rtwords buffer\n"));
@@ -3749,7 +3749,7 @@ process_rtsummary(
 
 		args.sumbp = iocur_top->bp;
 		ondisk = xfs_rsumblock_infoptr(&args, 0);
-		memcpy(sfile, ondisk, mp->m_sb.sb_blocksize);
+		memcpy(sfile, ondisk, mp->m_blockwsize << XFS_WORDLOG);
 		pop_cur();
 		sfile += mp->m_blockwsize;
 	}
diff --git a/repair/phase6.c b/repair/phase6.c
index 0818ee1a1501..fcb26d594b10 100644
--- a/repair/phase6.c
+++ b/repair/phase6.c
@@ -626,7 +626,7 @@ _("can't access block %" PRIu64 " (fsbno %" PRIu64 ") of realtime bitmap inode %
 
 		args.rbmbp = bp;
 		ondisk = xfs_rbmblock_wordptr(&args, 0);
-		memcpy(ondisk, bmp, mp->m_sb.sb_blocksize);
+		memcpy(ondisk, bmp, mp->m_blockwsize << XFS_WORDLOG);
 
 		libxfs_trans_log_buf(tp, bp, 0, mp->m_sb.sb_blocksize - 1);
 
@@ -705,7 +705,7 @@ _("can't access block %" PRIu64 " (fsbno %" PRIu64 ") of realtime summary inode
 
 		args.sumbp = bp;
 		ondisk = xfs_rsumblock_infoptr(&args, 0);
-		memcpy(ondisk, smp, mp->m_sb.sb_blocksize);
+		memcpy(ondisk, smp, mp->m_blockwsize << XFS_WORDLOG);
 
 		libxfs_trans_log_buf(tp, bp, 0, mp->m_sb.sb_blocksize - 1);
 
diff --git a/repair/rt.c b/repair/rt.c
index 9aff5a0d3d58..e49487829af2 100644
--- a/repair/rt.c
+++ b/repair/rt.c
@@ -25,8 +25,9 @@ rtinit(xfs_mount_t *mp)
 		return;
 
 	/*
-	 * realtime init -- blockmap initialization is
-	 * handled by incore_init()
+	 * Allocate buffers for formatting the collected rt free space
+	 * information.  The rtbitmap buffer must be large enough to compare
+	 * against any unused bytes in the last block of the file.
 	 */
 	wordcnt = libxfs_rtbitmap_wordcount(mp, mp->m_sb.sb_rextents);
 	btmcompute = calloc(wordcnt, sizeof(union xfs_rtword_raw));
@@ -87,7 +88,7 @@ generate_rtinfo(
 
 	ASSERT(mp->m_rbmip == NULL);
 
-	bitsperblock = mp->m_sb.sb_blocksize * NBBY;
+	bitsperblock = mp->m_blockwsize << XFS_NBWORDLOG;
 	extno = start_ext = 0;
 	bmbno = in_extent = start_bmbno = 0;
 
@@ -199,7 +200,7 @@ check_rtfile_contents(
 			break;
 		}
 
-		if (memcmp(bp->b_addr, buf, mp->m_sb.sb_blocksize))
+		if (memcmp(bp->b_addr, buf, mp->m_blockwsize << XFS_WORDLOG))
 			do_warn(_("discrepancy in %s at dblock 0x%llx\n"),
 					filename, (unsigned long long)bno);