Re: [fuse-devel] [ANNOUNCE] Filesystem in Userspace - 2.2

[Franco Broi <franco@cltechnet.com>]

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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