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Subject[RFC][PATCH 2.6.0-test2] get rid of unused request_queue field queue_wait
Are we going to use the queue_wait field of struct request_queue 
someday? As of 2.6.0-test2, I don't see any use of it. If it's not
needed anymore, the following patch gets rid of it. Tested this patch by
compiling for i386 and also doing a grep through all .h and .c files to
see if it's used somewhere else (admittedly weak).
diff -urN linux-2.6.0-test2/drivers/block/ll_rw_blk.c linux-2.6.0-test2-no_queue_wait/drivers/block/ll_rw_blk.c
--- linux-2.6.0-test2/drivers/block/ll_rw_blk.c 2003-07-27 19:02:48.000000000 -0600
+++ linux-2.6.0-test2-no_queue_wait/drivers/block/ll_rw_blk.c 2003-07-27 22:36:16.000000000 -0600
@@ -225,7 +225,6 @@
*/
blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);

- init_waitqueue_head(&q->queue_wait);
INIT_LIST_HEAD(&q->plug_list);
}

diff -urN linux-2.6.0-test2/include/linux/blkdev.h linux-2.6.0-test2-no_queue_wait/include/linux/blkdev.h
--- linux-2.6.0-test2/include/linux/blkdev.h 2003-07-27 19:02:52.000000000 -0600
+++ linux-2.6.0-test2-no_queue_wait/include/linux/blkdev.h 2003-07-27 22:18:19.000000000 -0600
@@ -337,8 +337,6 @@
unsigned long seg_boundary_mask;
unsigned int dma_alignment;

- wait_queue_head_t queue_wait;
-
struct blk_queue_tag *queue_tags;

/*
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