On Fri, Dec 21, 2012 at 01:28:27PM -0800, Andy Lutomirski wrote:
> The onus is currently on filesystems to call file_update_time
> somewhere in the page_mkwrite path. This is unfortunate for three
> reasons:
>
> 1. page_mkwrite on a locked page should be fast. ext4, for example,
> often sleeps while dirtying inodes. (This could be considered a
> fixable problem with ext4, but this approach makes it
> irrelevant.)
Hi Andy,
Out of curiosity, could you please share more detailed information about
how to reproduce and measure this problem in ext4?
Thanks
- Zheng
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