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- Path: sparky!uunet!mcsun!news.funet.fi!hydra!klaava!torvalds
- From: torvalds@klaava.Helsinki.FI (Linus Benedict Torvalds)
- Newsgroups: comp.os.linux
- Subject: linux-0.97 patchlevel 2
- Message-ID: <1992Aug23.221741.6989@klaava.Helsinki.FI>
- Date: 23 Aug 92 22:17:41 GMT
- Organization: University of Helsinki
- Lines: 56
-
- As promised, 0.97.pl2 is out today (well, over here it's already
- tomorrow, so I guess I'm 35 minutes late. Naughty, naughty). Right
- now, the patch (and full source for those that don't like to patch up
- the system) is available at "nic.funet.fi: pub/OS/Linux/testing/Linus",
- but I'll try to put it on some other sites as well if I'm able and
- energetic enough. Probably tomorrow - together with a binary for those
- that aren't willing to comple the kernel on their own.
-
- 0.97.2 has mostly my mm/fs patches, along with some relatively minor
- diffs by others (including file locking by Doug Evans). User-level
- changes are minor: but the mm has changed a lot, and the vfs routines
- have been changed to keep track of the error-messages a bit better.
- Also, the vfs-interface to "follow_link()" changed slightly: people who
- are making filesystems should look at the changes (but they are
- relatively minor, and shouldn't result in any problems - both the
- extended fs and minix fs needed just a simple change in their respective
- symlink.c files).
-
- The mm changes /might/ lower performance slightly, as the paging TLB's
- are now flushed at every task-switch due to the new system, but I doubt
- it's noticeable. The other performance changes (dynamic buffers etc) in
- 0.97(.pl1) should overshadow that particular problem.
-
- I hope this release means that these kinds of low-level rewrites aren't
- needed for a while: the last couple of releases have changed some very
- fundamental things. Nothing seems to have suffered too badly, but I'd
- be happier if it all got tested more thoroughly. Anyway, discounting
- the ps/free etc suite of programs, everything I have tried has worked
- flawlessly despite the big kernel changes.
-
- I'm still worried about the reports about messed-up buffers, but have
- been unable to reproduce the problem, and nobody has so far
- disillusioned me about my guess that it's a problem with the SCSI code
- (which at least gives me an excuse for not doing anything about it :-).
- Other problems include at least one report of spontaneous re-booting,
- which is totally inexplicable, so I'm blaming hardware once more until I
- can get better data on the thing.
-
- As to patches sent by others: 0.97.2 contains very little of that kind
- of code. I've been too busy either working, or implementing my own
- changes that I have simply ignored them for the most part. Remind me
- (or resend them relative to the new kernel) if you have a patch that is
- still needed.
-
- There is one new system call: 'vm86(struct vm86_struct * info)'. It's
- not ready for general use yet - it works, but will probably need some
- tweaking before being practical. But supporting a virtual 86 mode was
- so easy after the mm rewrite that I felt it was worth implementing: the
- vm86 code is less than 50 lines of C right now.
-
- Linus
-
- PS. The bright spot of the week goes to "The Oxford Beer Trolls" - all
- UK inhabitants should probably be locked into some (big) mental
- institution and TOBT should probably have a wing of their own, but
- thanks to them linux can now call itself "beerware" :-)
-