JFS: Whitespace cleanup and remove some dead code

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>

23 files changed, 1066 insertions, 1098 deletions

diff --git a/fs/jfs/endian24.h b/fs/jfs/endian24.h
index 79494c4f2b10..fa92f7f1d0d0 100644
--- a/fs/jfs/endian24.h
+++ b/fs/jfs/endian24.h
@@ -29,7 +29,7 @@
 	__u32 __x = (x); \
 	((__u32)( \
 		((__x & (__u32)0x000000ffUL) << 16) | \
-		 (__x & (__u32)0x0000ff00UL)        | \
+		 (__x & (__u32)0x0000ff00UL)	    | \
 		((__x & (__u32)0x00ff0000UL) >> 16) )); \
 })
 
diff --git a/fs/jfs/jfs_dinode.h b/fs/jfs/jfs_dinode.h
index 40b20111383c..c387540d3425 100644
--- a/fs/jfs/jfs_dinode.h
+++ b/fs/jfs/jfs_dinode.h
@@ -19,23 +19,23 @@
 #define _H_JFS_DINODE
 
 /*
- *      jfs_dinode.h: on-disk inode manager
+ *	jfs_dinode.h: on-disk inode manager
  */
 
-#define INODESLOTSIZE           128
-#define L2INODESLOTSIZE         7
-#define log2INODESIZE           9	/* log2(bytes per dinode) */
+#define INODESLOTSIZE		128
+#define L2INODESLOTSIZE		7
+#define log2INODESIZE		9	/* log2(bytes per dinode) */
 
 
 /*
- *      on-disk inode : 512 bytes
+ *	on-disk inode : 512 bytes
  *
  * note: align 64-bit fields on 8-byte boundary.
  */
 struct dinode {
 	/*
-	 *      I. base area (128 bytes)
-	 *      ------------------------
+	 *	I. base area (128 bytes)
+	 *	------------------------
 	 *
 	 * define generic/POSIX attributes
 	 */
@@ -70,16 +70,16 @@ struct dinode {
 	__le32 di_acltype;	/* 4: Type of ACL */
 
 	/*
-	 *      Extension Areas.
+	 *	Extension Areas.
 	 *
-	 *      Historically, the inode was partitioned into 4 128-byte areas,
-	 *      the last 3 being defined as unions which could have multiple
-	 *      uses.  The first 96 bytes had been completely unused until
-	 *      an index table was added to the directory.  It is now more
-	 *      useful to describe the last 3/4 of the inode as a single
-	 *      union.  We would probably be better off redesigning the
-	 *      entire structure from scratch, but we don't want to break
-	 *      commonality with OS/2's JFS at this time.
+	 *	Historically, the inode was partitioned into 4 128-byte areas,
+	 *	the last 3 being defined as unions which could have multiple
+	 *	uses.  The first 96 bytes had been completely unused until
+	 *	an index table was added to the directory.  It is now more
+	 *	useful to describe the last 3/4 of the inode as a single
+	 *	union.  We would probably be better off redesigning the
+	 *	entire structure from scratch, but we don't want to break
+	 *	commonality with OS/2's JFS at this time.
 	 */
 	union {
 		struct {
@@ -95,7 +95,7 @@ struct dinode {
 		} _dir;					/* (384) */
 #define di_dirtable	u._dir._table
 #define di_dtroot	u._dir._dtroot
-#define di_parent       di_dtroot.header.idotdot
+#define di_parent	di_dtroot.header.idotdot
 #define di_DASD		di_dtroot.header.DASD
 
 		struct {
@@ -127,14 +127,14 @@ struct dinode {
 #define di_inlinedata	u._file._u2._special._u
 #define di_rdev		u._file._u2._special._u._rdev
 #define di_fastsymlink	u._file._u2._special._u._fastsymlink
-#define di_inlineea     u._file._u2._special._inlineea
+#define di_inlineea	u._file._u2._special._inlineea
 	} u;
 };
 
 /* extended mode bits (on-disk inode di_mode) */
-#define IFJOURNAL       0x00010000	/* journalled file */
-#define ISPARSE         0x00020000	/* sparse file enabled */
-#define INLINEEA        0x00040000	/* inline EA area free */
+#define IFJOURNAL	0x00010000	/* journalled file */
+#define ISPARSE		0x00020000	/* sparse file enabled */
+#define INLINEEA	0x00040000	/* inline EA area free */
 #define ISWAPFILE	0x00800000	/* file open for pager swap space */
 
 /* more extended mode bits: attributes for OS/2 */
diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c
index f3b1ebb22280..e1985066b1c6 100644
--- a/fs/jfs/jfs_dmap.c
+++ b/fs/jfs/jfs_dmap.c
@@ -154,12 +154,12 @@ static const s8 budtab[256] = {
  *		the in-core descriptor is initialized from disk.
  *
  * PARAMETERS:
- *      ipbmap	-  pointer to in-core inode for the block map.
+ *	ipbmap	- pointer to in-core inode for the block map.
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOMEM	- insufficient memory
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOMEM	- insufficient memory
+ *	-EIO	- i/o error
  */
 int dbMount(struct inode *ipbmap)
 {
@@ -232,11 +232,11 @@ int dbMount(struct inode *ipbmap)
  *		the memory for this descriptor is freed.
  *
  * PARAMETERS:
- *      ipbmap	-  pointer to in-core inode for the block map.
+ *	ipbmap	- pointer to in-core inode for the block map.
  *
  * RETURN VALUES:
- *      0	- success
- *      -EIO	- i/o error
+ *	0	- success
+ *	-EIO	- i/o error
  */
 int dbUnmount(struct inode *ipbmap, int mounterror)
 {
@@ -320,13 +320,13 @@ int dbSync(struct inode *ipbmap)
  *		at a time.
  *
  * PARAMETERS:
- *      ip	-  pointer to in-core inode;
- *      blkno	-  starting block number to be freed.
- *      nblocks	-  number of blocks to be freed.
+ *	ip	- pointer to in-core inode;
+ *	blkno	- starting block number to be freed.
+ *	nblocks	- number of blocks to be freed.
  *
  * RETURN VALUES:
- *      0	- success
- *      -EIO	- i/o error
+ *	0	- success
+ *	-EIO	- i/o error
  */
 int dbFree(struct inode *ip, s64 blkno, s64 nblocks)
 {
@@ -395,23 +395,23 @@ int dbFree(struct inode *ip, s64 blkno, s64 nblocks)
 /*
  * NAME:	dbUpdatePMap()
  *
- * FUNCTION:    update the allocation state (free or allocate) of the
+ * FUNCTION:	update the allocation state (free or allocate) of the
  *		specified block range in the persistent block allocation map.
  *
  *		the blocks will be updated in the persistent map one
  *		dmap at a time.
  *
  * PARAMETERS:
- *      ipbmap	-  pointer to in-core inode for the block map.
- *      free	-  'true' if block range is to be freed from the persistent
- *		   map; 'false' if it is to   be allocated.
- *      blkno	-  starting block number of the range.
- *      nblocks	-  number of contiguous blocks in the range.
- *      tblk	-  transaction block;
+ *	ipbmap	- pointer to in-core inode for the block map.
+ *	free	- 'true' if block range is to be freed from the persistent
+ *		  map; 'false' if it is to be allocated.
+ *	blkno	- starting block number of the range.
+ *	nblocks	- number of contiguous blocks in the range.
+ *	tblk	- transaction block;
  *
  * RETURN VALUES:
- *      0	- success
- *      -EIO	- i/o error
+ *	0	- success
+ *	-EIO	- i/o error
  */
 int
 dbUpdatePMap(struct inode *ipbmap,
@@ -573,7 +573,7 @@ dbUpdatePMap(struct inode *ipbmap,
 /*
  * NAME:	dbNextAG()
  *
- * FUNCTION:    find the preferred allocation group for new allocations.
+ * FUNCTION:	find the preferred allocation group for new allocations.
  *
  *		Within the allocation groups, we maintain a preferred
  *		allocation group which consists of a group with at least
@@ -589,10 +589,10 @@ dbUpdatePMap(struct inode *ipbmap,
  *		empty ags around for large allocations.
  *
  * PARAMETERS:
- *      ipbmap	-  pointer to in-core inode for the block map.
+ *	ipbmap	- pointer to in-core inode for the block map.
  *
  * RETURN VALUES:
- *      the preferred allocation group number.
+ *	the preferred allocation group number.
  */
 int dbNextAG(struct inode *ipbmap)
 {
@@ -656,7 +656,7 @@ unlock:
 /*
  * NAME:	dbAlloc()
  *
- * FUNCTION:    attempt to allocate a specified number of contiguous free
+ * FUNCTION:	attempt to allocate a specified number of contiguous free
  *		blocks from the working allocation block map.
  *
  *		the block allocation policy uses hints and a multi-step
@@ -680,16 +680,16 @@ unlock:
  *		size or requests that specify no hint value.
  *
  * PARAMETERS:
- *      ip	-  pointer to in-core inode;
- *      hint	- allocation hint.
- *      nblocks	- number of contiguous blocks in the range.
- *      results	- on successful return, set to the starting block number
+ *	ip	- pointer to in-core inode;
+ *	hint	- allocation hint.
+ *	nblocks	- number of contiguous blocks in the range.
+ *	results	- on successful return, set to the starting block number
  *		  of the newly allocated contiguous range.
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOSPC	- insufficient disk resources
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOSPC	- insufficient disk resources
+ *	-EIO	- i/o error
  */
 int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
 {
@@ -706,12 +706,6 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
 	/* assert that nblocks is valid */
 	assert(nblocks > 0);
 
-#ifdef _STILL_TO_PORT
-	/* DASD limit check                                     F226941 */
-	if (OVER_LIMIT(ip, nblocks))
-		return -ENOSPC;
-#endif				/* _STILL_TO_PORT */
-
 	/* get the log2 number of blocks to be allocated.
 	 * if the number of blocks is not a log2 multiple,
 	 * it will be rounded up to the next log2 multiple.
@@ -720,7 +714,6 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
 
 	bmp = JFS_SBI(ip->i_sb)->bmap;
 
-//retry:        /* serialize w.r.t.extendfs() */
 	mapSize = bmp->db_mapsize;
 
 	/* the hint should be within the map */
@@ -879,17 +872,17 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
 /*
  * NAME:	dbAllocExact()
  *
- * FUNCTION:    try to allocate the requested extent;
+ * FUNCTION:	try to allocate the requested extent;
  *
  * PARAMETERS:
- *      ip	- pointer to in-core inode;
- *      blkno	- extent address;
- *      nblocks	- extent length;
+ *	ip	- pointer to in-core inode;
+ *	blkno	- extent address;
+ *	nblocks	- extent length;
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOSPC	- insufficient disk resources
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOSPC	- insufficient disk resources
+ *	-EIO	- i/o error
  */
 int dbAllocExact(struct inode *ip, s64 blkno, int nblocks)
 {
@@ -946,7 +939,7 @@ int dbAllocExact(struct inode *ip, s64 blkno, int nblocks)
 /*
  * NAME:	dbReAlloc()
  *
- * FUNCTION:    attempt to extend a current allocation by a specified
+ * FUNCTION:	attempt to extend a current allocation by a specified
  *		number of blocks.
  *
  *		this routine attempts to satisfy the allocation request
@@ -959,21 +952,21 @@ int dbAllocExact(struct inode *ip, s64 blkno, int nblocks)
  *		number of blocks required.
  *
  * PARAMETERS:
- *      ip	    -  pointer to in-core inode requiring allocation.
- *      blkno	    -  starting block of the current allocation.
- *      nblocks	    -  number of contiguous blocks within the current
+ *	ip	    -  pointer to in-core inode requiring allocation.
+ *	blkno	    -  starting block of the current allocation.
+ *	nblocks	    -  number of contiguous blocks within the current
  *		       allocation.
- *      addnblocks  -  number of blocks to add to the allocation.
- *      results	-      on successful return, set to the starting block number
+ *	addnblocks  -  number of blocks to add to the allocation.
+ *	results	-      on successful return, set to the starting block number
  *		       of the existing allocation if the existing allocation
  *		       was extended in place or to a newly allocated contiguous
  *		       range if the existing allocation could not be extended
  *		       in place.
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOSPC	- insufficient disk resources
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOSPC	- insufficient disk resources
+ *	-EIO	- i/o error
  */
 int
 dbReAlloc(struct inode *ip,
@@ -1004,7 +997,7 @@ dbReAlloc(struct inode *ip,
 /*
  * NAME:	dbExtend()
  *
- * FUNCTION:    attempt to extend a current allocation by a specified
+ * FUNCTION:	attempt to extend a current allocation by a specified
  *		number of blocks.
  *
  *		this routine attempts to satisfy the allocation request
@@ -1013,16 +1006,16 @@ dbReAlloc(struct inode *ip,
  *		immediately following the current allocation.
  *
  * PARAMETERS:
- *      ip	    -  pointer to in-core inode requiring allocation.
- *      blkno	    -  starting block of the current allocation.
- *      nblocks	    -  number of contiguous blocks within the current
+ *	ip	    -  pointer to in-core inode requiring allocation.
+ *	blkno	    -  starting block of the current allocation.
+ *	nblocks	    -  number of contiguous blocks within the current
  *		       allocation.
- *      addnblocks  -  number of blocks to add to the allocation.
+ *	addnblocks  -  number of blocks to add to the allocation.
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOSPC	- insufficient disk resources
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOSPC	- insufficient disk resources
+ *	-EIO	- i/o error
  */
 static int dbExtend(struct inode *ip, s64 blkno, s64 nblocks, s64 addnblocks)
 {
@@ -1109,19 +1102,19 @@ static int dbExtend(struct inode *ip, s64 blkno, s64 nblocks, s64 addnblocks)
 /*
  * NAME:	dbAllocNext()
  *
- * FUNCTION:    attempt to allocate the blocks of the specified block
+ * FUNCTION:	attempt to allocate the blocks of the specified block
  *		range within a dmap.
  *
  * PARAMETERS:
- *      bmp	-  pointer to bmap descriptor
- *      dp	-  pointer to dmap.
- *      blkno	-  starting block number of the range.
- *      nblocks	-  number of contiguous free blocks of the range.
+ *	bmp	-  pointer to bmap descriptor
+ *	dp	-  pointer to dmap.
+ *	blkno	-  starting block number of the range.
+ *	nblocks	-  number of contiguous free blocks of the range.
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOSPC	- insufficient disk resources
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOSPC	- insufficient disk resources
+ *	-EIO	- i/o error
  *
  * serialization: IREAD_LOCK(ipbmap) held on entry/exit;
  */
@@ -1233,7 +1226,7 @@ static int dbAllocNext(struct bmap * bmp, struct dmap * dp, s64 blkno,
 /*
  * NAME:	dbAllocNear()
  *
- * FUNCTION:    attempt to allocate a number of contiguous free blocks near
+ * FUNCTION:	attempt to allocate a number of contiguous free blocks near
  *		a specified block (hint) within a dmap.
  *
  *		starting with the dmap leaf that covers the hint, we'll
@@ -1242,18 +1235,18 @@ static int dbAllocNext(struct bmap * bmp, struct dmap * dp, s64 blkno,
  *		the desired free space.
  *
  * PARAMETERS:
- *      bmp	-  pointer to bmap descriptor
- *      dp	-  pointer to dmap.
- *      blkno	-  block number to allocate near.
- *      nblocks	-  actual number of contiguous free blocks desired.
- *      l2nb	-  log2 number of contiguous free blocks desired.
- *      results	-  on successful return, set to the starting block number
+ *	bmp	-  pointer to bmap descriptor
+ *	dp	-  pointer to dmap.
+ *	blkno	-  block number to allocate near.
+ *	nblocks	-  actual number of contiguous free blocks desired.
+ *	l2nb	-  log2 number of contiguous free blocks desired.
+ *	results	-  on successful return, set to the starting block number
  *		   of the newly allocated range.
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOSPC	- insufficient disk resources
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOSPC	- insufficient disk resources
+ *	-EIO	- i/o error
  *
  * serialization: IREAD_LOCK(ipbmap) held on entry/exit;
  */
@@ -1316,7 +1309,7 @@ dbAllocNear(struct bmap * bmp,
 /*
  * NAME:	dbAllocAG()
  *
- * FUNCTION:    attempt to allocate the specified number of contiguous
+ * FUNCTION:	attempt to allocate the specified number of contiguous
  *		free blocks within the specified allocation group.
  *
  *		unless the allocation group size is equal to the number
@@ -1353,17 +1346,17 @@ dbAllocNear(struct bmap * bmp,
  *		the allocation group.
  *
  * PARAMETERS:
- *      bmp	-  pointer to bmap descriptor
+ *	bmp	-  pointer to bmap descriptor
  *	agno	- allocation group number.
- *      nblocks	-  actual number of contiguous free blocks desired.
- *      l2nb	-  log2 number of contiguous free blocks desired.
- *      results	-  on successful return, set to the starting block number
+ *	nblocks	-  actual number of contiguous free blocks desired.
+ *	l2nb	-  log2 number of contiguous free blocks desired.
+ *	results	-  on successful return, set to the starting block number
  *		   of the newly allocated range.
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOSPC	- insufficient disk resources
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOSPC	- insufficient disk resources
+ *	-EIO	- i/o error
  *
  * note: IWRITE_LOCK(ipmap) held on entry/exit;
  */
@@ -1546,7 +1539,7 @@ dbAllocAG(struct bmap * bmp, int agno, s64 nblocks, int l2nb, s64 * results)
 /*
  * NAME:	dbAllocAny()
  *
- * FUNCTION:    attempt to allocate the specified number of contiguous
+ * FUNCTION:	attempt to allocate the specified number of contiguous
  *		free blocks anywhere in the file system.
  *
  *		dbAllocAny() attempts to find the sufficient free space by
@@ -1556,16 +1549,16 @@ dbAllocAG(struct bmap * bmp, int agno, s64 nblocks, int l2nb, s64 * results)
  *		desired free space is allocated.
  *
  * PARAMETERS:
- *      bmp	-  pointer to bmap descriptor
- *      nblocks	 -  actual number of contiguous free blocks desired.
- *      l2nb	 -  log2 number of contiguous free blocks desired.
- *      results	-  on successful return, set to the starting block number
+ *	bmp	-  pointer to bmap descriptor
+ *	nblocks	 -  actual number of contiguous free blocks desired.
+ *	l2nb	 -  log2 number of contiguous free blocks desired.
+ *	results	-  on successful return, set to the starting block number
  *		   of the newly allocated range.
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOSPC	- insufficient disk resources
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOSPC	- insufficient disk resources
+ *	-EIO	- i/o error
  *
  * serialization: IWRITE_LOCK(ipbmap) held on entry/exit;
  */
@@ -1598,9 +1591,9 @@ static int dbAllocAny(struct bmap * bmp, s64 nblocks, int l2nb, s64 * results)
 /*
  * NAME:	dbFindCtl()
  *
- * FUNCTION:    starting at a specified dmap control page level and block
+ * FUNCTION:	starting at a specified dmap control page level and block
  *		number, search down the dmap control levels for a range of
- *	        contiguous free blocks large enough to satisfy an allocation
+ *		contiguous free blocks large enough to satisfy an allocation
  *		request for the specified number of free blocks.
  *
  *		if sufficient contiguous free blocks are found, this routine
@@ -1609,17 +1602,17 @@ static int dbAllocAny(struct bmap * bmp, s64 nblocks, int l2nb, s64 * results)
  *		is sufficient in size.
  *
  * PARAMETERS:
- *      bmp	-  pointer to bmap descriptor
- *      level	-  starting dmap control page level.
- *      l2nb	-  log2 number of contiguous free blocks desired.
- *      *blkno	-  on entry, starting block number for conducting the search.
+ *	bmp	-  pointer to bmap descriptor
+ *	level	-  starting dmap control page level.
+ *	l2nb	-  log2 number of contiguous free blocks desired.
+ *	*blkno	-  on entry, starting block number for conducting the search.
  *		   on successful return, the first block within a dmap page
  *		   that contains or starts a range of contiguous free blocks.
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOSPC	- insufficient disk resources
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOSPC	- insufficient disk resources
+ *	-EIO	- i/o error
  *
  * serialization: IWRITE_LOCK(ipbmap) held on entry/exit;
  */
@@ -1699,7 +1692,7 @@ static int dbFindCtl(struct bmap * bmp, int l2nb, int level, s64 * blkno)
 /*
  * NAME:	dbAllocCtl()
  *
- * FUNCTION:    attempt to allocate a specified number of contiguous
+ * FUNCTION:	attempt to allocate a specified number of contiguous
  *		blocks starting within a specific dmap.
  *
  *		this routine is called by higher level routines that search
@@ -1726,18 +1719,18 @@ static int dbFindCtl(struct bmap * bmp, int l2nb, int level, s64 * blkno)
  *		first dmap (i.e. blkno).
  *
  * PARAMETERS:
- *      bmp	-  pointer to bmap descriptor
- *      nblocks	 -  actual number of contiguous free blocks to allocate.
- *      l2nb	 -  log2 number of contiguous free blocks to allocate.
- *      blkno	 -  starting block number of the dmap to start the allocation
+ *	bmp	-  pointer to bmap descriptor
+ *	nblocks	 -  actual number of contiguous free blocks to allocate.
+ *	l2nb	 -  log2 number of contiguous free blocks to allocate.
+ *	blkno	 -  starting block number of the dmap to start the allocation
  *		    from.
- *      results	-  on successful return, set to the starting block number
+ *	results	-  on successful return, set to the starting block number
  *		   of the newly allocated range.
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOSPC	- insufficient disk resources
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOSPC	- insufficient disk resources
+ *	-EIO	- i/o error
  *
  * serialization: IWRITE_LOCK(ipbmap) held on entry/exit;
  */
@@ -1870,7 +1863,7 @@ dbAllocCtl(struct bmap * bmp, s64 nblocks, int l2nb, s64 blkno, s64 * results)
 /*
  * NAME:	dbAllocDmapLev()
  *
- * FUNCTION:    attempt to allocate a specified number of contiguous blocks
+ * FUNCTION:	attempt to allocate a specified number of contiguous blocks
  *		from a specified dmap.
  *
  *		this routine checks if the contiguous blocks are available.
@@ -1878,17 +1871,17 @@ dbAllocCtl(struct bmap * bmp, s64 nblocks, int l2nb, s64 blkno, s64 * results)
  *		returned.
  *
  * PARAMETERS:
- *      mp	-  pointer to bmap descriptor
- *      dp	-  pointer to dmap to attempt to allocate blocks from.
- *      l2nb	-  log2 number of contiguous block desired.
- *      nblocks	-  actual number of contiguous block desired.
- *      results	-  on successful return, set to the starting block number
+ *	mp	-  pointer to bmap descriptor
+ *	dp	-  pointer to dmap to attempt to allocate blocks from.
+ *	l2nb	-  log2 number of contiguous block desired.
+ *	nblocks	-  actual number of contiguous block desired.
+ *	results	-  on successful return, set to the starting block number
  *		   of the newly allocated range.
  *
  * RETURN VALUES:
- *      0	- success
- *      -ENOSPC	- insufficient disk resources
- *      -EIO	- i/o error
+ *	0	- success
+ *	-ENOSPC	- insufficient disk resources
+ *	-EIO	- i/o error
  *
  * serialization: IREAD_LOCK(ipbmap), e.g., from dbAlloc(), or
  *	IWRITE_LOCK(ipbmap), e.g., dbAllocCtl(), held on entry/exit;
@@ -1933,7 +1926,7 @@ dbAllocDmapLev(struct bmap * bmp,
 /*
  * NAME:	dbAllocDmap()
  *
- * FUNCTION:    adjust the disk allocation map to reflect the allocation
+ * FUNCTION:	adjust the disk allocation map to reflect the allocation
  *		of a specified block range within a dmap.
  *
  *		this routine allocates the specified blocks from the dmap
@@ -1946,14 +1939,14 @@ dbAllocDmapLev(struct bmap * bmp,
  *		covers this dmap.
  *
  * PARAMETERS:
- *      bmp	-  pointer to bmap descriptor
- *      dp	-  pointer to dmap to allocate the block range from.
- *      blkno	-  starting block number of the block to be allocated.
- *      nblocks	-  number of blocks to be allocated.
+ *	bmp	-  pointer to bmap descriptor
+ *	dp	-  pointer to dmap to allocate the block range from.
+ *	blkno	-  starting block number of the block to be allocated.
+ *	nblocks	-  number of blocks to be allocated.
  *
  * RETURN VALUES:
- *      0	- success
- *      -EIO	- i/o error
+ *	0	- success
+ *	-EIO	- i/o error
  *
  * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
  */
@@ -1989,7 +1982,7 @@ static int dbAllocDmap(struct bmap * bmp, struct dmap * dp, s64 blkno,
 /*
  * NAME:	dbFreeDmap()
  *
- * FUNCTION:    adjust the disk allocation map to reflect the allocation
+ * FUNCTION:	adjust the disk allocation map to reflect the allocation
  *		of a specified block range within a dmap.
  *
  *		this routine frees the specified blocks from the dmap through
@@ -1997,18 +1990,18 @@ static int dbAllocDmap(struct bmap * bmp, struct dmap * dp, s64 blkno,
  *		causes the maximum string of free blocks within the dmap to
  *		change (i.e. the value of the root of the dmap's dmtree), this
  *		routine will cause this change to be reflected up through the
- *	        appropriate levels of the dmap control pages by a call to
+ *		appropriate levels of the dmap control pages by a call to
  *		dbAdjCtl() for the L0 dmap control page that covers this dmap.
  *
  * PARAMETERS:
- *      bmp	-  pointer to bmap descriptor
- *      dp	-  pointer to dmap to free the block range from.
- *      blkno	-  starting block number of the block to be freed.
- *      nblocks	-  number of blocks to be freed.
+ *	bmp	-  pointer to bmap descriptor
+ *	dp	-  pointer to dmap to free the block range from.
+ *	blkno	-  starting block number of the block to be freed.
+ *	nblocks	-  number of blocks to be freed.
  *
  * RETURN VALUES:
- *      0	- success
- *      -EIO	- i/o error
+ *	0	- success
+ *	-EIO	- i/o error
  *
  * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
  */
@@ -2055,7 +2048,7 @@ static int dbFreeDmap(struct bmap * bmp, struct dmap * dp, s64 blkno,
 /*
  * NAME:	dbAllocBits()
  *
- * FUNCTION:    allocate a specified block range from a dmap.
+ * FUNCTION:	allocate a specified block range from a dmap.
  *
  *		this routine updates the dmap to reflect the working
  *		state allocation of the specified block range. it directly
@@ -2065,10 +2058,10 @@ static int dbFreeDmap(struct bmap * bmp, struct dmap * dp, s64 blkno,
  *		dmap's dmtree, as a whole, to reflect the allocated range.
  *
  * PARAMETERS:
- *      bmp	-  pointer to bmap descriptor
- *      dp	-  pointer to dmap to allocate bits from.
- *      blkno	-  starting block number of the bits to be allocated.
- *      nblocks	-  number of bits to be allocated.
+ *	bmp	-  pointer to bmap descriptor
+ *	dp	-  pointer to dmap to allocate bits from.
+ *	blkno	-  starting block number of the bits to be allocated.
+ *	nblocks	-  number of bits to be allocated.
  *
  * RETURN VALUES: none
  *
@@ -2149,7 +2142,7 @@ static void dbAllocBits(struct bmap * bmp, struct dmap * dp, s64 blkno,
 			 * the allocated words.
 			 */
 			for (; nwords > 0; nwords -= nw) {
-			        if (leaf[word] < BUDMIN) {
+				if (leaf[word] < BUDMIN) {
 					jfs_error(bmp->db_ipbmap->i_sb,
 						  "dbAllocBits: leaf page "
 						  "corrupt");
@@ -2202,7 +2195,7 @@ static void dbAllocBits(struct bmap * bmp, struct dmap * dp, s64 blkno,
 /*
  * NAME:	dbFreeBits()
  *
- * FUNCTION:    free a specified block range from a dmap.
+ * FUNCTION:	free a specified block range from a dmap.
  *
  *		this routine updates the dmap to reflect the working
  *		state allocation of the specified block range. it directly
@@ -2212,10 +2205,10 @@ static void dbAllocBits(struct bmap * bmp, struct dmap * dp, s64 blkno,
  *		dmtree, as a whole, to reflect the deallocated range.
  *
  * PARAMETERS:
- *      bmp	-  pointer to bmap descriptor
- *      dp	-  pointer to dmap to free bits from.
- *      blkno	-  starting block number of the bits to be freed.
- *      nblocks	-  number of bits to be freed.
+ *	bmp	-  pointer to bmap descriptor
+ *	dp	-  pointer to dmap to free bits from.
+ *	blkno	-  starting block number of the bits to be freed.
+ *	nblocks	-  number of bits to be freed.
  *
  * RETURN VALUES: 0 for success
  *
@@ -2388,19 +2381,19 @@ static int dbFreeBits(struct bmap * bmp, struct dmap * dp, s64 blkno,
  *		the new root value and the next dmap control page level to
  *		be adjusted.
  * PARAMETERS:
- *      bmp	-  pointer to bmap descriptor
- *      blkno	-  the first block of a block range within a dmap.  it is
+ *	bmp	-  pointer to bmap descriptor
+ *	blkno	-  the first block of a block range within a dmap.  it is
  *		   the allocation or deallocation of this block range that
  *		   requires the dmap control page to be adjusted.
- *      newval	-  the new value of the lower level dmap or dmap control
+ *	newval	-  the new value of the lower level dmap or dmap control
  *		   page root.
- *      alloc	-  'true' if adjustment is due to an allocation.
- *      level	-  current level of dmap control page (i.e. L0, L1, L2) to
+ *	alloc	-  'true' if adjustment is due to an allocation.
+ *	level	-  current level of dmap control page (i.e. L0, L1, L2) to
  *		   be adjusted.
  *
  * RETURN VALUES:
- *      0	- success
- *      -EIO	- i/o error
+ *	0	- success
+ *	-EIO	- i/o error
  *
  * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
  */
@@ -2544,16 +2537,16 @@ dbAdjCtl(struct bmap * bmp, s64 blkno, int newval, int alloc, int level)
 /*
  * NAME:	dbSplit()
  *
- * FUNCTION:    update the leaf of a dmtree with a new value, splitting
+ * FUNCTION:	update the leaf of a dmtree with a new value, splitting
  *		the leaf from the binary buddy system of the dmtree's
  *		leaves, as required.
  *
  * PARAMETERS:
- *      tp	- pointer to the tree containing the leaf.
- *      leafno	- the number of the leaf to be updated.
- *      splitsz	- the size the binary buddy system starting at the leaf
+ *	tp	- pointer to the tree containing the leaf.
+ *	leafno	- the number of the leaf to be updated.
+ *	splitsz	- the size the binary buddy system starting at the leaf
  *		  must be split to, specified as the log2 number of blocks.
- *      newval	- the new value for the leaf.
+ *	newval	- the new value for the leaf.
  *
  * RETURN VALUES: none
  *
@@ -2600,7 +2593,7 @@ static void dbSplit(dmtree_t * tp, int leafno, int splitsz, int newval)
 /*
  * NAME:	dbBackSplit()
  *
- * FUNCTION:    back split the binary buddy system of dmtree leaves
+ * FUNCTION:	back split the binary buddy system of dmtree leaves
  *		that hold a specified leaf until the specified leaf
  *		starts its own binary buddy system.
  *
@@ -2617,8 +2610,8 @@ static void dbSplit(dmtree_t * tp, int leafno, int splitsz, int newval)
  *		in which a previous join operation must be backed out.
  *
  * PARAMETERS:
- *      tp	- pointer to the tree containing the leaf.
- *      leafno	- the number of the leaf to be updated.
+ *	tp	- pointer to the tree containing the leaf.
+ *	leafno	- the number of the leaf to be updated.
  *
  * RETURN VALUES: none
  *
@@ -2692,14 +2685,14 @@ static int dbBackSplit(dmtree_t * tp, int leafno)
 /*
  * NAME:	dbJoin()
  *
- * FUNCTION:    update the leaf of a dmtree with a new value, joining
+ * FUNCTION:	update the leaf of a dmtree with a new value, joining
  *		the leaf with other leaves of the dmtree into a multi-leaf
  *		binary buddy system, as required.
  *
  * PARAMETERS:
- *      tp	- pointer to the tree containing the leaf.
- *      leafno	- the number of the leaf to be updated.
- *      newval	- the new value for the leaf.
+ *	tp	- pointer to the tree containing the leaf.
+ *	leafno	- the number of the leaf to be updated.
+ *	newval	- the new value for the leaf.
  *
  * RETURN VALUES: none
  */
@@ -2785,15 +2778,15 @@ static int dbJoin(dmtree_t * tp, int leafno, int newval)
 /*
  * NAME:	dbAdjTree()
  *
- * FUNCTION:    update a leaf of a dmtree with a new value, adjusting
+ * FUNCTION:	update a leaf of a dmtree with a new value, adjusting
  *		the dmtree, as required, to reflect the new leaf value.
  *		the combination of any buddies must already be done before
  *		this is called.
  *
  * PARAMETERS:
- *      tp	- pointer to the tree to be adjusted.
- *      leafno	- the number of the leaf to be updated.
- *      newval	- the new value for the leaf.
+ *	tp	- pointer to the tree to be adjusted.
+ *	leafno	- the number of the leaf to be updated.
+ *	newval	- the new value for the leaf.
  *
  * RETURN VALUES: none
  */
@@ -2852,7 +2845,7 @@ static void dbAdjTree(dmtree_t * tp, int leafno, int newval)
 /*
  * NAME:	dbFindLeaf()
  *
- * FUNCTION:    search a dmtree_t for sufficient free blocks, returning
+ * FUNCTION:	search a dmtree_t for sufficient free blocks, returning
  *		the index of a leaf describing the free blocks if
  *		sufficient free blocks are found.
  *
@@ -2861,15 +2854,15 @@ static void dbAdjTree(d