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SubjectRe: Regression - /proc/kmsg does not (always) block for 1-byte reads

On Saturday 2012-07-07 23:19, Kay Sievers wrote:
>On Fri, Jul 6, 2012 at 10:30 PM, Linus Torvalds
><torvalds@linux-foundation.org> wrote:
>> Kay, this needs to be fixed.
>>
>> Suggested fix: just use the 'seq_printf()' interfaces, which do the
>> proper buffering, and allow any size reads of various packetized data.
>
>I'll have a look.
>
>> Of course, I'd also suggest that whoever was the genius who thought it
>> was a good idea to read things ONE F*CKING BYTE AT A TIME with system
>> calls for each byte should be retroactively aborted. Who the f*ck does
>> idiotic things like that? How did they noty die as babies, considering
>> that they were likely too stupid to find a tit to suck on?
>
>Maybe the bs=1 in the dd call stands for bullshit. :)

It seems people need to be taught to use ddrescue, stringently.
Having to calculate appropriate values for bs= and count= when
you just want to transfer bytes is already a crime, not to mention
the problem when you have a prime number of bytes to transfer.


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