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SubjectRe: [fuse-devel] [ANNOUNCE] Filesystem in Userspace - 2.2
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I've just ported my filesystem to 2.2-pre6 and was able to throw away
about 300 lines of code, the filehandle stuff is great. I was hoping to
give it a thorough test and report back before 2.2 was released but you
beat me to it.

It just keeps getting better and better, well done!


On Thu, 2005-02-03 at 12:29 +0100, Miklos Szeredi wrote:
> FUSE version 2.2 is out there:
>
> http://sourceforge.net/project/showfiles.php?group_id=121684&package_id=132802&release_id=301878
>
> This can be used standalone or with recent -mm kernels (with the
> exception of -rc2-mm2).
>
> Most notable changes since 2.1:
>
> - Added file handle parameter to open/read/write/release. This
> should make life easier for filesystems wanting to implement
> stateful I/O.
>
> - Added compatibility to the 2.1 and to some extent to the 1.X API
>
> - Re-added ability to interrupt operations. This time more
> carefully than in 1.X.
>
> Regressions:
>
> - Removed shared-writable mmap support, which could deadlock the
> linux memory subsystem. This should not affect most people, but
> if some application breaks for you, I'd like to hear about it.
>
> - Made the readpages() operation synchronous, again for deadlock
> considerations. This can degrade performance, especially for high
> latency filesystems, since previously parallel read-ahead is now
> serialized.
>
> In the long run I hope to solve both problems, but neither is trivial.
> Ideas are welcome, as well as bugreports of course.
>
> Thanks,
> Miklos
>
>
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