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- Path: sparky!uunet!mcsun!news.funet.fi!hydra!klaava!torvalds
- From: torvalds@klaava.Helsinki.FI (Linus Torvalds)
- Newsgroups: comp.os.linux
- Subject: Linux version 0.98-pl4
- Message-ID: <1992Nov9.112201.14250@klaava.Helsinki.FI>
- Date: 9 Nov 92 11:22:01 GMT
- Organization: University of Helsinki
- Lines: 50
-
- As the subject probably tells you, pl4 is out. It's currently available
- at least on nic.funet.fi: pub/OS/Linux/PEOPLE/Linus/, but will probably
- show up on the other major sites very soon.
-
- pl4 is available both as complete source (linux-0.98.4.tar.Z) and as
- patches against pl3 (linux-0.98.patch4.Z) and against the pre-version
- that was released for limited testing (pre-patch4.Z or something like
- that). Things that have changed:
-
- - the inode caching bug (resulting in bad filesystem info when
- mounting/umounting devices) should be gone for good.
-
- - an elusive race-condition in the fs is fixed: this may have been the
- reason some people got fsck errors once in a while. The
- race-condition was pretty hard to find, and depends on a lot of
- things (buffer cache size, speed of the disk and computer speed).
-
- - fpu emulator patches (mainly for the re-entrancy problem) by me and
- W. Metzenthen.
-
- - various wait-queue changes - the kernel uses the waiting mechanism
- more efficiently now.
-
- - the NFS client support code is there: the actual nfs code is still in
- alpha (although reported to be pretty stable) and has to be gotten
- separately.
-
- - NR_OPEN was changed from 32 to 256 (which is what SunOS seems to use,
- so I hope it won't need any further changes). This has lead to some
- incompatibilities (GNU emacs and the term program seem to need
- recompilation to work correctly), as the 'select()' system call has a
- slightly changed interface due to the new fd_set definition.
-
- - the process kernel stack is now on a separate page (needed due to the
- fact that the task_struct has now grown to almost 3kB due to the
- NR_OPEN changes). This also means 'ps' needs patches.. My patches
- to ps-0.98 are available as 'ps-diff.Z' in the same directory as the
- kernel sources and diffs.
-
- - various other changes: system call tracing by Ross Biro. Changed
- ll_rw_block interface (performance reasons: it will eventually be
- changed to accept several requests at once). Malloc() was changed
- and renamed to kmalloc() due to the new interface. Some tcp/ip
- patches (inode counting correction and some other changes).
-
- 0.98.4 should hopefully be pretty stable: the main problem areas are
- probably still tcp/ip and some of the tty code. I'd appreciate
- comments, bug-reports etc.
-
- Linus
-