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NVSL / linux-nova

NOVA is a log-structured file system designed for byte-addressable non-volatile memories, developed at the University of California, San Diego.
http://nvsl.ucsd.edu/index.php?path=projects/nova
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XFStests generic/080: mtime and ctime not updated for dax mmap access #25

Open stevenjswanson opened 7 years ago

stevenjswanson commented 7 years ago

mtime and ctime are not updated in response to mmap() updates.

It's clear that they should be updated. If not, then programs like make will fail if rules use mmap to modify files.

Interesting article discussing the issue of mtime/ctime on mmap files.

https://lwn.net/Articles/564120/

It's not quite clear if the approach described got upstreamed or not.