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authorChris Mason <chris.mason@oracle.com>2011-12-15 09:29:43 -0500
committerChris Mason <chris.mason@oracle.com>2011-12-15 10:50:38 -0500
commit8f3b65a3d66bcc086e1eb040b7545e70681f2ed1 (patch)
tree3111f24d0e0391f8a1dac3f0a7fb9bff05e2b4bd
parent306424cc880a0fbbdc99eee1f43d056a301a180f (diff)
downloadlwn-8f3b65a3d66bcc086e1eb040b7545e70681f2ed1.tar.gz
lwn-8f3b65a3d66bcc086e1eb040b7545e70681f2ed1.zip
Btrfs: add a cond_resched() into the worker loop
If we have a constant stream of end_io completions or crc work, we can hit softlockup messages from the async helper threads. This adds a cond_resched() into the loop to avoid them. Signed-off-by: Chris Mason <chris.mason@oracle.com>
-rw-r--r--fs/btrfs/async-thread.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index 7ec14097fef1..203e849dc9c9 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -331,7 +331,7 @@ again:
run_ordered_completions(worker->workers, work);
check_pending_worker_creates(worker);
-
+ cond_resched();
}
spin_lock_irq(&worker->lock);