Documentation: remove duplicated words

[mirror_ubuntu-artful-kernel.git] / Documentation / block / biodoc.txt

diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt
index 8e63831971d5e4dc1eaf8622e4b9828cd679e1d5..34bf8f60d8f827a9b83f27747c265a27fe38928d 100644 (file)
--- a/Documentation/block/biodoc.txt
+++ b/Documentation/block/biodoc.txt
@@ -132,8 +132,18 @@ Some new queue property settings:
                limit. No highmem default.
 
        blk_queue_max_sectors(q, max_sectors)
-               Maximum size request you can handle in units of 512 byte
-               sectors. 255 default.
+               Sets two variables that limit the size of the request.
+
+               - The request queue's max_sectors, which is a soft size in
+               units of 512 byte sectors, and could be dynamically varied
+               by the core kernel.
+
+               - The request queue's max_hw_sectors, which is a hard limit
+               and reflects the maximum size request a driver can handle
+               in units of 512 byte sectors.
+
+               The default for both max_sectors and max_hw_sectors is
+               255. The upper limit of max_sectors is 1024.
 
        blk_queue_max_phys_segments(q, max_segments)
                Maximum physical segments you can handle in a request. 128
@@ -773,7 +783,7 @@ all the outstanding requests. There's a third helper to do that:
 
        blk_queue_invalidate_tags(request_queue_t *q)
 
-       Clear the internal block tag queue and readd all the pending requests
+       Clear the internal block tag queue and re-add all the pending requests
        to the request queue. The driver will receive them again on the
        next request_fn run, just like it did the first time it encountered
        them.
@@ -880,7 +890,7 @@ Aside:
 
   Kvec i/o:
 
-  Ben LaHaise's aio code uses a slighly different structure instead
+  Ben LaHaise's aio code uses a slightly different structure instead
   of kiobufs, called a kvec_cb. This contains an array of <page, offset, len>
   tuples (very much like the networking code), together with a callback function
   and data pointer. This is embedded into a brw_cb structure when passed
@@ -978,7 +988,7 @@ elevator_exit_fn            Allocate and free any elevator specific storage
                                for a queue.
 
 4.2 Request flows seen by I/O schedulers
-All requests seens by I/O schedulers strictly follow one of the following three
+All requests seen by I/O schedulers strictly follow one of the following three
 flows.
 
  set_req_fn ->
@@ -1193,6 +1203,6 @@ temporarily map a bio into the virtual address space.
 and Linus' comments - Jan 2001)
 9.2 Discussions about kiobuf and bh design on lkml between sct, linus, alan
 et al - Feb-March 2001 (many of the initial thoughts that led to bio were
-brought up in this discusion thread)
+brought up in this discussion thread)
 9.3 Discussions on mempool on lkml - Dec 2001.