Re: [PATCH v3] fs: ratelimit __find_get_block_slow() failure message.

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On 1/21/19 6:49 AM, Tetsuo Handa wrote:
> When something let __find_get_block_slow() hit all_mapped path, it calls
> printk() for 100+ times per a second. But there is no need to print same
> message with such high frequency; it is just asking for stall warning, or
> at least bloating log files.
> 
>   [  399.866302][T15342] __find_get_block_slow() failed. block=1, b_blocknr=8
>   [  399.873324][T15342] b_state=0x00000029, b_size=512
>   [  399.878403][T15342] device loop0 blocksize: 4096
>   [  399.883296][T15342] __find_get_block_slow() failed. block=1, b_blocknr=8
>   [  399.890400][T15342] b_state=0x00000029, b_size=512
>   [  399.895595][T15342] device loop0 blocksize: 4096
>   [  399.900556][T15342] __find_get_block_slow() failed. block=1, b_blocknr=8
>   [  399.907471][T15342] b_state=0x00000029, b_size=512
>   [  399.912506][T15342] device loop0 blocksize: 4096
> 
> This patch reduces frequency to up to once per a second, in addition to
> concatenating three lines into one.

Applied, thanks.

-- 
Jens Axboe




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