提交 ff7d145f 编写于 作者: J Jens Axboe 提交者: Jens Axboe

[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: NJens Axboe <axboe@suse.de>
上级 5380a101
......@@ -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 */
......
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