Re: [PATCH] blk: fix possible queue stall in blk_do_ordered

Tejun Heo wrote:

Previously, if a fs request which was being drained failed and got
requeued, blk_do_ordered() didn't allow it to be reissued, which
causes queue stall.  This patch makes blk_do_ordered() use the
sequence of each request to determine whether a request can be issued
or not.  This fixes the bug and simplifies code.

What kernel(s) is this against?  The patch seems to fail on 2.6.15.

Thanks
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