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block: fix oops in blk_queue_io_stat()

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Some initial probe requests don't have disk->queue mapped yet, so we
can't rely on a non-NULL queue in blk_queue_io_stat(). Wrap it in
blk_do_io_stat().

Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Jens Axboe 2009-02-02 08:42:32 +01:00
commit fb8ec18c31
2 changed files with 11 additions and 3 deletions
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8
block/blk.h
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@ -108,4 +108,12 @@ static inline int blk_cpu_to_group(int cpu)
#endif
}
static inline int blk_do_io_stat(struct request_queue *q)
{
if (q)
return blk_queue_io_stat(q);
return 0;
}
#endif