diff --git a/block/blk-core.c b/block/blk-core.c
index d17d71c..f6452f6 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -884,9 +884,10 @@
 
 /**
  * blk_make_request - given a bio, allocate a corresponding struct request.
- *
+ * @q: target request queue
  * @bio:  The bio describing the memory mappings that will be submitted for IO.
  *        It may be a chained-bio properly constructed by block/bio layer.
+ * @gfp_mask: gfp flags to be used for memory allocation
  *
  * blk_make_request is the parallel of generic_make_request for BLOCK_PC
  * type commands. Where the struct request needs to be farther initialized by
@@ -1872,14 +1873,14 @@
 
 /**
  * blk_update_request - Special helper function for request stacking drivers
- * @rq:	      the request being processed
+ * @req:      the request being processed
  * @error:    %0 for success, < %0 for error
- * @nr_bytes: number of bytes to complete @rq
+ * @nr_bytes: number of bytes to complete @req
  *
  * Description:
- *     Ends I/O on a number of bytes attached to @rq, but doesn't complete
- *     the request structure even if @rq doesn't have leftover.
- *     If @rq has leftover, sets it up for the next range of segments.
+ *     Ends I/O on a number of bytes attached to @req, but doesn't complete
+ *     the request structure even if @req doesn't have leftover.
+ *     If @req has leftover, sets it up for the next range of segments.
  *
  *     This special helper function is only for request stacking drivers
  *     (e.g. request-based dm) so that they can handle partial completion.
@@ -2145,7 +2146,7 @@
 /**
  * blk_end_request_all - Helper function for drives to finish the request.
  * @rq: the request to finish
- * @err: %0 for success, < %0 for error
+ * @error: %0 for success, < %0 for error
  *
  * Description:
  *     Completely finish @rq.
@@ -2166,7 +2167,7 @@
 /**
  * blk_end_request_cur - Helper function to finish the current request chunk.
  * @rq: the request to finish the current chunk for
- * @err: %0 for success, < %0 for error
+ * @error: %0 for success, < %0 for error
  *
  * Description:
  *     Complete the current consecutively mapped chunk from @rq.
@@ -2203,7 +2204,7 @@
 /**
  * __blk_end_request_all - Helper function for drives to finish the request.
  * @rq: the request to finish
- * @err: %0 for success, < %0 for error
+ * @error: %0 for success, < %0 for error
  *
  * Description:
  *     Completely finish @rq.  Must be called with queue lock held.
@@ -2224,7 +2225,7 @@
 /**
  * __blk_end_request_cur - Helper function to finish the current request chunk.
  * @rq: the request to finish the current chunk for
- * @err: %0 for success, < %0 for error
+ * @error: %0 for success, < %0 for error
  *
  * Description:
  *     Complete the current consecutively mapped chunk from @rq.  Must