On 11/18/2010 01:57 AM, Wu Fengguang wrote:
On 32bit kernel, bdi->write_bandwidth can express at most 4GB/s. However the current calculation code can overflow when disk bandwidth reaches 800MB/s. Fix it by using "long long" and swapping the order of multiplication/division. And further, change its unit to pages/second rather than bytes/second. That allows up to 16TB/s bandwidth in 32bit kernel. Signed-off-by: Wu Fengguang<fengguang.wu@xxxxxxxxx>
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