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kernel: use lockless list for smp_call_function_single

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Make smp_call_function_single and friends more efficient by using a
lockless list.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2014-01-30 15:45:47 -08:00 • committed by Linus Torvalds
parent 0c692d0784
commit 6897fc22ea
3 changed files with 19 additions and 43 deletions
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5
include/linux/blkdev.h
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@ -95,10 +95,7 @@ enum rq_cmd_type_bits {
* as well!
*/
struct request {
union {
struct list_head queuelist;
struct llist_node ll_list;
};
struct list_head queuelist;
union {
struct call_single_data csd;
struct work_struct mq_flush_data;