diff options
Diffstat (limited to 'include/linux/writeback.h')
| -rw-r--r-- | include/linux/writeback.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 797100e10010..a3c0cbd7c888 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -9,6 +9,9 @@ #include <linux/fs.h> #include <linux/flex_proportions.h> #include <linux/backing-dev-defs.h> +#include <linux/blk_types.h> + +struct bio; DECLARE_PER_CPU(int, dirty_throttle_leaks); @@ -43,7 +46,7 @@ enum writeback_sync_modes { */ enum wb_reason { WB_REASON_BACKGROUND, - WB_REASON_TRY_TO_FREE_PAGES, + WB_REASON_VMSCAN, WB_REASON_SYNC, WB_REASON_PERIODIC, WB_REASON_LAPTOP_TIMER, @@ -100,6 +103,16 @@ struct writeback_control { #endif }; +static inline int wbc_to_write_flags(struct writeback_control *wbc) +{ + if (wbc->sync_mode == WB_SYNC_ALL) + return REQ_SYNC; + else if (wbc->for_kupdate || wbc->for_background) + return REQ_BACKGROUND; + + return 0; +} + /* * A wb_domain represents a domain that wb's (bdi_writeback's) belong to * and are measured against each other in. There always is one global @@ -362,7 +375,6 @@ void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty); unsigned long wb_calc_thresh(struct bdi_writeback *wb, unsigned long thresh); void wb_update_bandwidth(struct bdi_writeback *wb, unsigned long start_time); -void page_writeback_init(void); void balance_dirty_pages_ratelimited(struct address_space *mapping); bool wb_over_bg_thresh(struct bdi_writeback *wb); |