Re: [PATCH v4 02/28] mm: Add an unlock function for PG_private_2/PG_fscache

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote:

> So ... a page with both flags cleared should have a refcount of N.
> A page with one or both flags set should have a refcount of N+1.
> ...
> How is a poor filesystem supposed to make that true?  Also btrfs has this
> problem since it uses private_2 for its own purposes.

It's simpler if it's N+2 for both patches set.  Btw, patch 13 adds that - and
possibly that should be merged into an earlier patch.

David




[Index of Archives]     [Linux Filesystem Development]     [Linux USB Development]     [Linux Media Development]     [Video for Linux]     [Linux NILFS]     [Linux Audio Users]     [Yosemite Info]     [Linux SCSI]

  Powered by Linux