A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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blkio: Take care of cgroup deletion and cfq group reference counting

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o One can choose to change elevator or delete a cgroup. Implement group
  reference counting so that both elevator exit and cgroup deletion can
  take place gracefully.

Signed-off-by: Vivek Goyal <[email protected]>
Signed-off-by: Nauman Rafique <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Vivek Goyal 2009-12-03 12:59:47 -05:00 • committed by Jens Axboe
commit b1c3576961
3 changed files with 160 additions and 2 deletions
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1
block/blk-cgroup.h
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@ -26,6 +26,7 @@ struct blkio_group {
/* An rcu protected unique identifier for the group */
void *key;
struct hlist_node blkcg_node;
unsigned short blkcg_id;
};
#define BLKIO_WEIGHT_MIN 100