diff options
| author | Li Nan <linan122@huawei.com> | 2024-05-07 10:31:03 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-05-07 07:34:08 -0600 |
| commit | 504fbcffea649cad69111e7597081dd8adc3b395 (patch) | |
| tree | 851214c14a43795216c583b3bb527b8f4dd25ebd /drivers/md/md.c | |
| parent | 719c15a75ebf3bda3ca718fe8e0ce63d262ec7ae (diff) | |
md: Revert "md: Fix overflow in is_mddev_idle"
This reverts commit 3f9f231236ce7e48780d8a4f1f8cb9fae2df1e4e.
Using 64bit for 'sync_io' is unnecessary from the gendisk side. This
overflow will not cause any functional impact, except for a UBSAN
warning. Solving this overflow requires introducing additional
calculations and checks which are not necessary. So just keep using
32bit for 'sync_io'.
Signed-off-by: Li Nan <linan122@huawei.com>
Link: https://lore.kernel.org/r/20240507023103.781816-1-linan666@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 00bbafcd27bb..aff9118ff697 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -8577,7 +8577,7 @@ static int is_mddev_idle(struct mddev *mddev, int init) { struct md_rdev *rdev; int idle; - long long curr_events; + int curr_events; idle = 1; rcu_read_lock(); @@ -8587,9 +8587,8 @@ static int is_mddev_idle(struct mddev *mddev, int init) if (!init && !blk_queue_io_stat(disk->queue)) continue; - curr_events = - (long long)part_stat_read_accum(disk->part0, sectors) - - atomic64_read(&disk->sync_io); + curr_events = (int)part_stat_read_accum(disk->part0, sectors) - + atomic_read(&disk->sync_io); /* sync IO will cause sync_io to increase before the disk_stats * as sync_io is counted when a request starts, and * disk_stats is counted when it completes. |