Messages in this thread |  | | Date | Tue, 6 Feb 2001 19:35:17 +0100 (CET) | From | Ingo Molnar <> | Subject | Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait |
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On Tue, 6 Feb 2001, Ben LaHaise wrote:
> > - higher levels do not have the kind of state to eg. merge requests done > > by different users. The only chance for merging is often the lowest > > level, where we already know what disk, which sector. > > That's what a readaround buffer is for, [...]
If you are merging based on (device, offset) values, then that's lowlevel - and this is what we have been doing for years.
If you are merging based on (inode, offset), then it has flaws like not being able to merge through a loopback or stacked filesystem.
Ingo
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