summaryrefslogtreecommitdiff
path: root/include/linux/backing-dev.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/backing-dev.h')
-rw-r--r--include/linux/backing-dev.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 439815cc1ab9..fbad4fcd408e 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -102,8 +102,18 @@ static inline unsigned long wb_stat_error(void)
#endif
}
+/* BDI ratio is expressed as part per 1000000 for finer granularity. */
+#define BDI_RATIO_SCALE 10000
+
+u64 bdi_get_min_bytes(struct backing_dev_info *bdi);
+u64 bdi_get_max_bytes(struct backing_dev_info *bdi);
int bdi_set_min_ratio(struct backing_dev_info *bdi, unsigned int min_ratio);
int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio);
+int bdi_set_min_ratio_no_scale(struct backing_dev_info *bdi, unsigned int min_ratio);
+int bdi_set_max_ratio_no_scale(struct backing_dev_info *bdi, unsigned int max_ratio);
+int bdi_set_min_bytes(struct backing_dev_info *bdi, u64 min_bytes);
+int bdi_set_max_bytes(struct backing_dev_info *bdi, u64 max_bytes);
+int bdi_set_strict_limit(struct backing_dev_info *bdi, unsigned int strict_limit);
/*
* Flags in backing_dev_info::capability