Messages in this thread Patch in this message | | | From | Vivek Goyal <> | Subject | [PATCH 8/8] blk-throttle: enable throttling of task while dirtying pages | Date | Fri, 3 Jun 2011 17:06:49 -0400 |
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Put the blk_throtl_dirty_pages() hook in balance_dirty_pages_ratelimited_nr() to enable task throttling.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com> --- include/linux/blkdev.h | 5 +++++ mm/page-writeback.c | 3 +++ 2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index ae9091a..3ad8f5f 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1180,12 +1180,17 @@ static inline uint64_t rq_io_start_time_ns(struct request *req) extern int blk_throtl_init(struct request_queue *q); extern void blk_throtl_exit(struct request_queue *q); extern int blk_throtl_bio(struct request_queue *q, struct bio **bio); +extern void blk_throtl_dirty_pages(struct address_space *mapping, + unsigned long nr_dirty); #else /* CONFIG_BLK_DEV_THROTTLING */ static inline int blk_throtl_bio(struct request_queue *q, struct bio **bio) { return 0; } +static inline void blk_throtl_dirty_pages(struct address_space *mapping, + unsigned long nr_dirty) {} + static inline int blk_throtl_init(struct request_queue *q) { return 0; } static inline int blk_throtl_exit(struct request_queue *q) { return 0; } #endif /* CONFIG_BLK_DEV_THROTTLING */ diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 31f6988..943e551 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -629,6 +629,9 @@ void balance_dirty_pages_ratelimited_nr(struct address_space *mapping, unsigned long ratelimit; unsigned long *p; + /* Subject writes to IO controller throttling */ + blk_throtl_dirty_pages(mapping, nr_pages_dirtied); + ratelimit = ratelimit_pages; if (mapping->backing_dev_info->dirty_exceeded) ratelimit = 8; -- 1.7.4.4
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