Hi,
What happens if a file (on a FUSE mountpoint) is opened without
O_DIRECT, has some data in the page cache, and is then opened a second
with O_DIRECT?
Will reads with O_DIRECT come from the page cache (if there's a hit), or
be passed through to the fuse daemon?
What happens to writes (with and without O_DIRECT, and assuming that
writeback caching is active)? It seems to me that in order to keep
consistent, either caching has to be disabled for both file descriptors
or enabled for both...
Thanks!
-Nikolaus
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