treewide: Fix comment and string typo 'bufer'

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

fs/ext4/inode.c

@@ -1878,7 +1878,7 @@ static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate);
  * a[0] = 'a';
  * truncate(f, 4096);
  * we have in the page first buffer_head mapped via page_mkwrite call back
- * but other bufer_heads would be unmapped but dirty(dirty done via the
+ * but other buffer_heads would be unmapped but dirty (dirty done via the
  * do_wp_page). So writepage should write the first block. If we modify
  * the mmap area beyond 1024 we will again get a page_fault and the
  * page_mkwrite callback will do the block allocation and mark the

fs/jbd/checkpoint.c

@@ -537,7 +537,7 @@ int cleanup_journal_tail(journal_t *journal)
  * them.
  *
  * Called with j_list_lock held.
- * Returns number of bufers reaped (for debug)
+ * Returns number of buffers reaped (for debug)
  */
 
 static int journal_clean_one_cp_list(struct journal_head *jh, int *released)

fs/jbd2/checkpoint.c

@@ -565,7 +565,7 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
  *
  * Called with the journal locked.
  * Called with j_list_lock held.
- * Returns number of bufers reaped (for debug)
+ * Returns number of buffers reaped (for debug)
  */
 
 static int journal_clean_one_cp_list(struct journal_head *jh, int *released)

fs/xfs/xfs_buf.c

@@ -1370,7 +1370,7 @@ restart:
 			goto restart;
 		}
 		/*
-		 * clear the LRU reference count so the bufer doesn't get
+		 * clear the LRU reference count so the buffer doesn't get
 		 * ignored in xfs_buf_rele().
 		 */
 		atomic_set(&bp->b_lru_ref, 0);