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| author | Jens Axboe <jens.axboe@oracle.com> | 2008-05-07 09:09:39 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-05-07 09:09:39 +0200 |
| commit | bf0f97025c7306870b86ccd63669aa278e7ec1c2 (patch) | |
| tree | d8988d1f6d817a1bb31563c9864f616a52c4c0b4 /block | |
| parent | c0a18111e571138747a98af18b3a2124df56a0d1 (diff) | |
| download | linux-bf0f97025c7306870b86ccd63669aa278e7ec1c2.tar.gz linux-bf0f97025c7306870b86ccd63669aa278e7ec1c2.tar.bz2 linux-bf0f97025c7306870b86ccd63669aa278e7ec1c2.zip | |
block: sysfs store function needs to grab queue_lock and use queue_flag_*()
Concurrency isn't a big deal here since we have requests in flight
at this point, but do the locked variant to set a better example.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-sysfs.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index e85c4013e8a2..304ec73ab821 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -146,11 +146,13 @@ static ssize_t queue_nomerges_store(struct request_queue *q, const char *page, unsigned long nm; ssize_t ret = queue_var_store(&nm, page, count); + spin_lock_irq(q->queue_lock); if (nm) - set_bit(QUEUE_FLAG_NOMERGES, &q->queue_flags); + queue_flag_set(QUEUE_FLAG_NOMERGES, q); else - clear_bit(QUEUE_FLAG_NOMERGES, &q->queue_flags); + queue_flag_clear(QUEUE_FLAG_NOMERGES, q); + spin_unlock_irq(q->queue_lock); return ret; } |