AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

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

Browse Source 
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>
This commit is contained in:
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
include/linux/blkdev.h
View File

@ -232,7 +232,13 @@ struct request {
struct hlist_node hash; /* merge hash */ struct hlist_node hash; /* merge hash */
struct rb_node rb_node; /* sort/lookup */ 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_private;
void *elevator_private2;
void *completion_data; void *completion_data;
int rq_status; /* should split this into a few status bits */ int rq_status; /* should split this into a few status bits */