git: 68dc94c7d314 - main - Correct and add some comments.

[Kirk McKusick]

The branch main has been updated by mckusick:

URL: https://cgit.FreeBSD.org/src/commit/?id=68dc94c7d314b02ef80fe972f524a2b3c6e68a1c

commit 68dc94c7d314b02ef80fe972f524a2b3c6e68a1c
Author:     Kirk McKusick <mckusick at FreeBSD.org>
AuthorDate: 2020-12-31 23:15:44 +0000
Commit:     Kirk McKusick <mckusick at FreeBSD.org>
CommitDate: 2020-12-31 23:36:33 +0000

    Correct and add some comments.
    
    Sponsored by: Netflix
---
 sbin/fsck_ffs/fsck.h | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/sbin/fsck_ffs/fsck.h b/sbin/fsck_ffs/fsck.h
index 8c7fe6d693c9..a471d1979438 100644
--- a/sbin/fsck_ffs/fsck.h
+++ b/sbin/fsck_ffs/fsck.h
@@ -137,11 +137,11 @@ extern struct inostatlist {
  */
 struct bufarea {
 	TAILQ_ENTRY(bufarea) b_list;		/* buffer list */
-	ufs2_daddr_t b_bno;
-	int b_size;
-	int b_errs;
-	int b_flags;
-	int b_type;
+	ufs2_daddr_t b_bno;			/* disk block number */
+	int b_size;				/* size of I/O */
+	int b_errs;				/* I/O error */
+	int b_flags;				/* B_ flags below */
+	int b_type;				/* BT_ type below */
 	union {
 		char *b_buf;			/* buffer space */
 		ufs1_daddr_t *b_indir1;		/* UFS1 indirect block */
@@ -172,14 +172,14 @@ struct bufarea {
 /*
  * Type of data in buffer
  */
-#define	BT_UNKNOWN 	 0	/* Buffer holds a superblock */
+#define	BT_UNKNOWN 	 0	/* Buffer type is unknown */
 #define	BT_SUPERBLK 	 1	/* Buffer holds a superblock */
 #define	BT_CYLGRP 	 2	/* Buffer holds a cylinder group map */
 #define	BT_LEVEL1 	 3	/* Buffer holds single level indirect */
 #define	BT_LEVEL2 	 4	/* Buffer holds double level indirect */
 #define	BT_LEVEL3 	 5	/* Buffer holds triple level indirect */
 #define	BT_EXTATTR 	 6	/* Buffer holds external attribute data */
-#define	BT_INODES 	 7	/* Buffer holds external attribute data */
+#define	BT_INODES 	 7	/* Buffer holds inodes */
 #define	BT_DIRDATA 	 8	/* Buffer holds directory data */
 #define	BT_DATA	 	 9	/* Buffer holds user data */
 #define BT_NUMBUFTYPES	10