diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2018-06-21 18:04:05 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-08-06 13:12:38 +0200 |
| commit | afd48513f0019a2048afed0d98904d3fec7e05dd (patch) | |
| tree | e1d06270a9aff6d87329b7a7ebb4fac2557a7888 | |
| parent | e41ca5897489b1c18af75ff0cc8f5c80260b3281 (diff) | |
| download | linux-afd48513f0019a2048afed0d98904d3fec7e05dd.tar.bz2 | |
btrfs: use monotonic time for transaction handling
The transaction times were changed to ktime_get_real_seconds to avoid
the y2038 overflow, but they still have a minor problem when they go
backwards or jump due to settimeofday() or leap seconds.
This changes the transaction handling to instead use ktime_get_seconds(),
which returns a CLOCK_MONOTONIC timestamp that has neither of those
problems.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/disk-io.c | 2 | ||||
| -rw-r--r-- | fs/btrfs/transaction.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 6318ac2539d3..2de3da7b7bdc 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1805,7 +1805,7 @@ static int transaction_kthread(void *arg) goto sleep; } - now = ktime_get_real_seconds(); + now = ktime_get_seconds(); if (cur->state < TRANS_STATE_BLOCKED && !test_bit(BTRFS_FS_NEED_ASYNC_COMMIT, &fs_info->flags) && (now < cur->start_time || diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 56c8bab0b816..ebe50dfb8947 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -241,7 +241,7 @@ loop: refcount_set(&cur_trans->use_count, 2); atomic_set(&cur_trans->pending_ordered, 0); cur_trans->flags = 0; - cur_trans->start_time = ktime_get_real_seconds(); + cur_trans->start_time = ktime_get_seconds(); memset(&cur_trans->delayed_refs, 0, sizeof(cur_trans->delayed_refs)); |