On 02/23/2010 10:10 PM, Wu Fengguang wrote:
Linus reports a _really_ small& slow (505kB, 15kB/s) USB device, on which blkid runs unpleasantly slow. He manages to optimize the blkid reads down to 1kB+16kB, but still kernel read-ahead turns it into 48kB.
CC: Li Shaohua<shaohua.li@xxxxxxxxx> CC: Clemens Ladisch<clemens@xxxxxxxxxx> Acked-by: Jens Axboe<jens.axboe@xxxxxxxxxx> Tested-by: Vivek Goyal<vgoyal@xxxxxxxxxx> Tested-by: Linus Torvalds<torvalds@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Wu Fengguang<fengguang.wu@xxxxxxxxx>
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