Messages in this thread Patch in this message |  | | | Date | Sat, 21 Nov 2009 14:16:11 +0900 | | From | Hiroyasu OHYAMA <> | | Subject | [PATCH] (Documentation) append more detail explanation to the I/O scheduler API. |
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This patch append more detail explanation to the Documentation of API of I/O scheduler.
Thank you for reading.
--- diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt index 8d2158a..7c04f54 100644 --- a/Documentation/block/biodoc.txt +++ b/Documentation/block/biodoc.txt @@ -935,7 +935,12 @@ keeping work. 4.1. I/O scheduler API
The functions an elevator may implement are: (* are mandatory) -elevator_merge_fn called to query requests for merge with a bio +elevator_merge_fn called to query requests for merge with a bio. This method + have two following works. One is to indicate how to merge request + with bio from head or tail. This function doesn't merge them actually, + but just indicate direction for merging from head or tail, or that + there is no request with that bio can merge. Another work is to get + the request object which is merged, if the bio can do.
elevator_merge_req_fn called when two requests get merged. the one which gets merged into the other one will be
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