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authorJens Axboe <jens.axboe@oracle.com>2009-02-02 10:42:32 +0300
committerJens Axboe <jens.axboe@oracle.com>2009-02-02 10:42:32 +0300
commitfb8ec18c316d869271137c97320dbfd2def56569 (patch)
tree8cf6a84747e10f0cf78a1cb73b1ea69681da0d70 /block/blk.h
parent45c82b5a770be66845687a7d027c8b52946d59af (diff)
downloadlinux-fb8ec18c316d869271137c97320dbfd2def56569.tar.xz
block: fix oops in blk_queue_io_stat()
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 <jens.axboe@oracle.com>
Diffstat (limited to 'block/blk.h')
-rw-r--r--block/blk.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/block/blk.h b/block/blk.h
index 6e1ed40534e9..0dce92c37496 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -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