Messages in this thread | | | Date | Thu, 26 Mar 2009 02:24:16 -0400 | From | Jeff Garzik <> | Subject | Re: Linux 2.6.29 |
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Kyle Moffett wrote: > Really, I think virtually all of the database programs would be > perfectly happy with an "fsbarrier(fd, flags)" syscall, where if "fd" > points to a regular file or directory then it instructs the underlying > filesystem to do whatever internal barrier it supports, and if not > just fail with -ENOTSUPP (so you can fall back to fdatasync(), etc). > Perhaps "flags" would allow a "data" or "metadata" barrier, but if not > it's not a big issue.
If you want a per-fd barrier call, there is always sync_file_range(2)
> If a user-level tool needs to enforce ordering > between IOs the only tool right now is is a full flush
or sync_file_range(2)...
Jeff
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