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| author | NeilBrown <neilb@suse.de> | 2013-11-19 12:02:01 +1100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2013-11-19 15:19:17 +1100 |
| commit | c91abf5a3546a4ff0838d2905f4d7eae2795f724 (patch) | |
| tree | 39b3735cebfa73ff370f2738bd8578a113fe4215 /drivers/md/raid10.c | |
| parent | 29f097c4d968021ee4fad1b033be5825ff78330e (diff) | |
| download | blackbird-op-linux-c91abf5a3546a4ff0838d2905f4d7eae2795f724.tar.gz blackbird-op-linux-c91abf5a3546a4ff0838d2905f4d7eae2795f724.zip | |
md: use MD_RECOVERY_INTR instead of kthread_should_stop in resync thread.
We currently use kthread_should_stop() in various places in the
sync/reshape code to abort early.
However some places set MD_RECOVERY_INTR but don't immediately call
md_reap_sync_thread() (and we will shortly get another one).
When this happens we are relying on md_check_recovery() to reap the
thread and that only happen when it finishes normally.
So MD_RECOVERY_INTR must lead to a normal finish without the
kthread_should_stop() test.
So replace all relevant tests, and be more careful when the thread is
interrupted not to acknowledge that latest step in a reshape as it may
not be fully committed yet.
Also add a test on MD_RECOVERY_INTR in the 'is_mddev_idle' loop
so we don't wait have to wait for the speed to drop before we can abort.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid10.c')
| -rw-r--r-- | drivers/md/raid10.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 73dc8a377522..4f87ba5f3a66 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -4386,7 +4386,11 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, set_bit(MD_CHANGE_DEVS, &mddev->flags); md_wakeup_thread(mddev->thread); wait_event(mddev->sb_wait, mddev->flags == 0 || - kthread_should_stop()); + test_bit(MD_RECOVERY_INTR, &mddev->recovery)); + if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) { + allow_barrier(conf); + return sectors_done; + } conf->reshape_safe = mddev->reshape_position; allow_barrier(conf); } |
