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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 17:45:37 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 17:45:37 +0000 |
| commit | 1c134c659904809d1ca3baf2bb295ca1c7107aee (patch) | |
| tree | c55c18153612f7df8e54d15aa52db97552d7eb78 /block/blk-iocost.c | |
| parent | Releasing progress-linux version 5.10.209-2progress6u1. (diff) | |
| download | linux-1c134c659904809d1ca3baf2bb295ca1c7107aee.tar.xz linux-1c134c659904809d1ca3baf2bb295ca1c7107aee.zip | |
Merging upstream version 5.10.216.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'block/blk-iocost.c')
| -rw-r--r-- | block/blk-iocost.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/block/blk-iocost.c b/block/blk-iocost.c index 7ba7c4e4e..63a8fb456 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -1296,6 +1296,13 @@ static bool iocg_kick_delay(struct ioc_gq *iocg, struct ioc_now *now) lockdep_assert_held(&iocg->waitq.lock); + /* + * If the delay is set by another CPU, we may be in the past. No need to + * change anything if so. This avoids decay calculation underflow. + */ + if (time_before64(now->now, iocg->delay_at)) + return false; + /* calculate the current delay in effect - 1/2 every second */ tdelta = now->now - iocg->delay_at; if (iocg->delay) |