Re: [PATCH RFC 3/8] dcache: sweep cached negative dentries to the end of list of siblings

2020-05-08 Thread Waiman Long
On 5/8/20 8:23 AM, Konstantin Khlebnikov wrote: For disk filesystems result of every negative lookup is cached, content of directories is usually cached too. Production of negative dentries isn't limited with disk speed. It's really easy to generate millions of them if system has enough memory. N

[PATCH RFC 3/8] dcache: sweep cached negative dentries to the end of list of siblings

2020-05-08 Thread Konstantin Khlebnikov
For disk filesystems result of every negative lookup is cached, content of directories is usually cached too. Production of negative dentries isn't limited with disk speed. It's really easy to generate millions of them if system has enough memory. Negative dentries are linked into siblings list alo