blktrace: small cleanup in blk_msg_write()
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: "Alan D. Brunelle" <alan.brunelle@hp.com> Cc: Jens Axboe <jens.axboe@oracle.com> LKML-Reference: <49D5BB56.7000807@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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a4b3ada83d
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7635b03adf
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@ -327,7 +327,7 @@ static ssize_t blk_msg_write(struct file *filp, const char __user *buffer,
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char *msg;
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struct blk_trace *bt;
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if (count > BLK_TN_MAX_MSG - 1)
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if (count >= BLK_TN_MAX_MSG)
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return -EINVAL;
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msg = kmalloc(count + 1, GFP_KERNEL);
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