Re: [PATCH 1/2] Avoid bio_endio recursion

[Jens Axboe]

On Tue, Jun 24 2008, Mikulas Patocka wrote:
> Hi
> 
> bio_endio calls bi_end_io callback. In case of stacked devices (raid, dm), 
> bio_end_io may call bio_endio again, up to an unspecified length.
> 
> The crash because of stack overflow was really observed on sparc64. And 
> this recursion was one of the contributing factors (using 9 stack frames 
> --- that is 1728 bytes).

Looks good, I like the concept. Can you please make it a little less
goto driven, though? The next_bio and goto next_bio could just be a
while().

-- 
Jens Axboe

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