diff options
Diffstat (limited to 'Documentation/block/biodoc.txt')
| -rw-r--r-- | Documentation/block/biodoc.txt | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt index b9a83dd2473..c6d84cfd2f5 100644 --- a/Documentation/block/biodoc.txt +++ b/Documentation/block/biodoc.txt @@ -497,7 +497,7 @@ The scatter gather list is in the form of an array of <page, offset, len> entries with their corresponding dma address mappings filled in at the appropriate time. As an optimization, contiguous physical pages can be covered by a single entry where <page> refers to the first page and <len> -covers the range of pages (upto 16 contiguous pages could be covered this +covers the range of pages (up to 16 contiguous pages could be covered this way). There is a helper routine (blk_rq_map_sg) which drivers can use to build the sg list. @@ -565,7 +565,7 @@ struct request { . int tag; /* command tag associated with request */ void *special; /* same as before */ - char *buffer; /* valid only for low memory buffers upto + char *buffer; /* valid only for low memory buffers up to current_nr_sectors */ . . @@ -963,11 +963,6 @@ elevator_dispatch_fn* fills the dispatch queue with ready requests. elevator_add_req_fn* called to add a new request into the scheduler -elevator_queue_empty_fn returns true if the merge queue is empty. - Drivers shouldn't use this, but rather check - if elv_next_request is NULL (without losing the - request if one exists!) - elevator_former_req_fn elevator_latter_req_fn These return the request before or after the one specified in disk sort order. Used by the |