Re: [linus:master] [filemap] 9aac777aaf: phoronix-test-suite.iozone.1MB.512MB.WritePerformance.mb_s -14.0% regression

[Christoph Hellwig]

On Wed, Jul 24, 2024 at 10:40:33PM +0800, kernel test robot wrote:
> 
> 
> Hello,
> 
> kernel test robot noticed a -14.0% regression of phoronix-test-suite.iozone.1MB.512MB.WritePerformance.mb_s on:
> 
> 
> commit: 9aac777aaf9459786bc8463e6cbfc7e7e1abd1f9 ("filemap: Convert generic_perform_write() to support large folios")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

This is really weird as it shouldn't make a different for file systems
not using large folios.  What file system is this test run with?