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[PATCH] Add one more pointer to struct request for IO scheduler usage 

Then we have enough room in the request to get rid of the dynamic
allocations in CFQ/AS.

Signed-off-by: Jens Axboe <axboe@suse.de>
hifive-unleashed-5.1
Jens Axboe 2006-07-12 14:04:37 +02:00 committed by Jens Axboe
parent 5380a101d3
commit ff7d145fd9
1 changed files with 6 additions and 0 deletions
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6
include/linux/blkdev.h
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@ -232,7 +232,13 @@ struct request {
struct hlist_node hash; /* merge hash */
struct rb_node rb_node; /* sort/lookup */
/*
* two pointers are available for the IO schedulers, if they need
* more they have to dynamically allocate it.
*/
void *elevator_private;
void *elevator_private2;
void *completion_data;
int rq_status; /* should split this into a few status bits */