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| author | Tejun Heo <tj@kernel.org> | 2011-01-03 15:01:48 +0100 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-01-03 15:01:48 +0100 |
| commit | a6e8dc46ff0b7defbfa4f29a71aee263377ec573 (patch) | |
| tree | a7c8ecf4a5fa52893d8a3e17200ae890ae3a1036 /fs/bio-integrity.c | |
| parent | 89b90be2d877a904b1704e4029db65655bfc6282 (diff) | |
| download | lwn-a6e8dc46ff0b7defbfa4f29a71aee263377ec573.tar.gz lwn-a6e8dc46ff0b7defbfa4f29a71aee263377ec573.zip | |
bio-integrity: mark kintegrityd_wq highpri and CPU intensive
Work items processed by kintegrityd_wq won't block much, may burn a
lot of CPU cycles and affect IO latency. Use alloc_workqueue() to
mark it highpri and CPU intensive with max concurrency of 1.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'fs/bio-integrity.c')
| -rw-r--r-- | fs/bio-integrity.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c index 4d0ff5ee27b8..e49cce234c65 100644 --- a/fs/bio-integrity.c +++ b/fs/bio-integrity.c @@ -782,7 +782,12 @@ void __init bio_integrity_init(void) { unsigned int i; - kintegrityd_wq = create_workqueue("kintegrityd"); + /* + * kintegrityd won't block much but may burn a lot of CPU cycles. + * Make it highpri CPU intensive wq with max concurrency of 1. + */ + kintegrityd_wq = alloc_workqueue("kintegrityd", WQ_MEM_RECLAIM | + WQ_HIGHPRI | WQ_CPU_INTENSIVE, 1); if (!kintegrityd_wq) panic("Failed to create kintegrityd\n"); |