diff options
| -rw-r--r-- | mm/page-writeback.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 9d9a896fa7b5..a7ba5cee950b 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -1749,15 +1749,22 @@ EXPORT_SYMBOL(balance_dirty_pages_ratelimited); */ bool wb_over_bg_thresh(struct bdi_writeback *wb) { - unsigned long background_thresh, dirty_thresh; + struct dirty_throttle_control gdtc_stor = { GDTC_INIT(wb) }; + struct dirty_throttle_control * const gdtc = &gdtc_stor; - global_dirty_limits(&background_thresh, &dirty_thresh); + /* + * Similar to balance_dirty_pages() but ignores pages being written + * as we're trying to decide whether to put more under writeback. + */ + gdtc->avail = global_dirtyable_memory(); + gdtc->dirty = global_page_state(NR_FILE_DIRTY) + + global_page_state(NR_UNSTABLE_NFS); + domain_dirty_limits(gdtc); - if (global_page_state(NR_FILE_DIRTY) + - global_page_state(NR_UNSTABLE_NFS) > background_thresh) + if (gdtc->dirty > gdtc->bg_thresh) return true; - if (wb_stat(wb, WB_RECLAIMABLE) > wb_calc_thresh(wb, background_thresh)) + if (wb_stat(wb, WB_RECLAIMABLE) > __wb_calc_thresh(gdtc)) return true; return false; |