diff options
Diffstat (limited to 'mm/page-writeback.c')
-rw-r--r-- | mm/page-writeback.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 5daf5568b9e1..eb59f7eea508 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c | |||
@@ -580,7 +580,7 @@ static long long pos_ratio_polynom(unsigned long setpoint, | |||
580 | long x; | 580 | long x; |
581 | 581 | ||
582 | x = div64_s64(((s64)setpoint - (s64)dirty) << RATELIMIT_CALC_SHIFT, | 582 | x = div64_s64(((s64)setpoint - (s64)dirty) << RATELIMIT_CALC_SHIFT, |
583 | limit - setpoint + 1); | 583 | (limit - setpoint) | 1); |
584 | pos_ratio = x; | 584 | pos_ratio = x; |
585 | pos_ratio = pos_ratio * x >> RATELIMIT_CALC_SHIFT; | 585 | pos_ratio = pos_ratio * x >> RATELIMIT_CALC_SHIFT; |
586 | pos_ratio = pos_ratio * x >> RATELIMIT_CALC_SHIFT; | 586 | pos_ratio = pos_ratio * x >> RATELIMIT_CALC_SHIFT; |
@@ -807,7 +807,7 @@ static unsigned long bdi_position_ratio(struct backing_dev_info *bdi, | |||
807 | * scale global setpoint to bdi's: | 807 | * scale global setpoint to bdi's: |
808 | * bdi_setpoint = setpoint * bdi_thresh / thresh | 808 | * bdi_setpoint = setpoint * bdi_thresh / thresh |
809 | */ | 809 | */ |
810 | x = div_u64((u64)bdi_thresh << 16, thresh + 1); | 810 | x = div_u64((u64)bdi_thresh << 16, thresh | 1); |
811 | bdi_setpoint = setpoint * (u64)x >> 16; | 811 | bdi_setpoint = setpoint * (u64)x >> 16; |
812 | /* | 812 | /* |
813 | * Use span=(8*write_bw) in single bdi case as indicated by | 813 | * Use span=(8*write_bw) in single bdi case as indicated by |
@@ -822,7 +822,7 @@ static unsigned long bdi_position_ratio(struct backing_dev_info *bdi, | |||
822 | 822 | ||
823 | if (bdi_dirty < x_intercept - span / 4) { | 823 | if (bdi_dirty < x_intercept - span / 4) { |
824 | pos_ratio = div64_u64(pos_ratio * (x_intercept - bdi_dirty), | 824 | pos_ratio = div64_u64(pos_ratio * (x_intercept - bdi_dirty), |
825 | x_intercept - bdi_setpoint + 1); | 825 | (x_intercept - bdi_setpoint) | 1); |
826 | } else | 826 | } else |
827 | pos_ratio /= 4; | 827 | pos_ratio /= 4; |
828 | 828 | ||