Messages in this thread | | | From | Jeff Moyer <> | Subject | Re: [PATCH v11 00/21] Add support for NV-DIMMs to ext4 | Date | Wed, 01 Oct 2014 11:45:47 -0400 |
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Valdis.Kletnieks@vt.edu writes:
> As long as we're at it, if we go that route we probably *also* want a > way for a program to specify it at open() time (for instance, for the > use of backup programs) - that should minimize the infamous "everything > runs like a pig after the backup finishes running because the *useful* > pages are all cache-cold".
This sounds an awful lot like posix_fadvise' POSIX_FADV_NOREUSE flag. Whether the implementation lives up to your expectations is another matter, but at least the interface is already there.
Cheers, Jeff
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