jfs: delete duplicated words + other fixes

Delete repeated words in fs/jfs/.
{for, allocation, if, the}
Insert "is" in one place to correct the grammar.

Signed-off-by: Randy Dunlap <[e-mail]>
Signed-off-by: Dave Kleikamp <[e-mail]>
To: [e-mail]
Cc: [e-mail]

fs/jfs/jfs_dmap.c

···
  *		this does not succeed, we finally try to allocate anywhere
  *		within the aggregate.
  *
- *		we also try to allocate anywhere within the aggregate for
+ *		we also try to allocate anywhere within the aggregate
  *		for allocation requests larger than the allocation group
  *		size or requests that specify no hint value.
  *

fs/jfs/jfs_extent.c

···
  *	blkno	 - starting block number of the extents current allocation.
  *	nblks	 - number of blocks within the extents current allocation.
  *	newnblks - pointer to a s64 value.  on entry, this value is the
- *		   the new desired extent size (number of blocks).  on
+ *		   new desired extent size (number of blocks).  on
  *		   successful exit, this value is set to the extent's actual
  *		   new size (new number of blocks).
  *	newblkno - the starting block number of the extents new allocation.

fs/jfs/jfs_extent.h

···
 #ifndef	_H_JFS_EXTENT
 #define _H_JFS_EXTENT
 
-/*  get block allocation allocation hint as location of disk inode */
+/*  get block allocation hint as location of disk inode */
 #define	INOHINT(ip)	\
 	(addressPXD(&(JFS_IP(ip)->ixpxd)) + lengthPXD(&(JFS_IP(ip)->ixpxd)) - 1)
 

fs/jfs/jfs_logmgr.h

···
  * (this comment should be rewritten !)
  * jfs uses only "after" log records (only a single writer is allowed
  * in a page, pages are written to temporary paging space if
- * if they must be written to disk before commit, and i/o is
+ * they must be written to disk before commit, and i/o is
  * scheduled for modified pages to their home location after
  * the log records containing the after values and the commit
  * record is written to the log on disk, undo discards the copy

fs/jfs/jfs_txnmgr.c

···
 		 * For the LOG_NOREDOINOEXT record, we need
 		 * to pass the IAG number and inode extent
 		 * index (within that IAG) from which the
-		 * the extent being released.  These have been
+		 * extent is being released.  These have been
 		 * passed to us in the iplist[1] and iplist[2].
 		 */
 		lrd->log.noredoinoext.iagnum =

fs/jfs/jfs_xtree.c

···
  *
  * function:
  *	Perform truncate to zero length for deleted file, leaving the
- *	the xtree and working map untouched.  This allows the file to
+ *	xtree and working map untouched.  This allows the file to
  *	be accessed via open file handles, while the delete of the file
  *	is committed to disk.
  *