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Linux kernel 2.2.13aa3 released

Date: Sun, 31 Oct 1999 17:05:17 +0100 (CET)
From: Andrea Arcangeli <<a href="mailto:[email protected]">[email protected]>
To: [email protected]

I released a 2.2.13aa3 mainly to fix an interesting bigmem bug spotted and
fixed by Leonard N. Zubkoff. His fix is obviously right and strictly
necessary. Unfortunately such bug can trigger only on real bigmem hardware
and as I don't have access to a real bigmem hardware I couldn't reproduce
and debug it here. I'll take care to fix such bigmem bug in the
2.3.25pre2 kernel as well ASAP (I verifyed the bug is present into the 2.3
bigmem stuff as well).

Many thanks Leonard!! ;))

This bugfix release is interesting for you _only_ if one of the below
conditions is true:

o        you are using the bigmem code and you have more than 2gigabyte of
        RAM and you have CONFIG_2G set
o        you are using the bigmem code and you have more than 1gigabyte of
        RAM and you have CONFIG_1G set
o        you are taking advantage of the fdset patch to increase the fdset
        to more than 1024 files descriptors

The differences between 2.2.13aa2 and 2.2.13aa3 are:

z-bigmem-2.2.13aa3-7.gz          -> fixed a obvious silly bigmem
                            bug that will lead
                            to processes killed randomly.
                            (all the credit goes to Leonard N.
                            Zubkoff)
fdset-fix.gz                     -> fixed a fdset bug that may lead to
                            memory corruption and Oopses
                            (credits goes to
                            Savochkin Andrey Vladimirovich,
                            I only backported the 2.3.x patch
                            to a four liner against 2.3.13)
dcache-hashfn.gz                 -> use only the dentry noise for
                            randomizing the dcache hashfn
                            (all the credit goes to David S.
                            Miller)

To go in sync with 2.2.13aa3 you can:

 mkdir 2.2.13aa3
 cd 2.2.13aa3
 wget --retr-symlinks -A*.gz ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.2/2.2.13aa3/*
 cd ..

and now you'll have all the interesting patches in the directory
2.2.13aa3.

At this point rename the 2.2.13 sources to 2.2.13aa3:

 mv linux-2.2.13 linux-2.2.13aa3
 cd linux-2.2.13aa3

and apply all the 2.2.13aa3 patches that you previously downloaded from
the ftp site:

 apply-patches.sh ../2.2.13aa3

At this point your tree will be in sync with 2.2.13aa3. Just configure
recompile and boot the new kernel.


You can find the `apply-patches.sh` bash script I written to easily apply
my kernel patches here:

 ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/tools/apply-patches/apply-patches.sh.gz

There is also a README on how to use it:

 ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/tools/apply-patches/README.gz

The 2.2.13aa3 kernel is placed here:

 ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.2/2.2.13aa3/

Have fun!

------ stuff present since 2.2.13aa2 --------

SMP-scheduler-2.2.11-E.gz        -> rewrote of reschedule_idle. (me)
buffer-hash.gz                   -> fixes lowmem box hash size. (me)
buffer-races-2.2.10-A.gz         -> fixes of race condition that may lead
                            to bad things in invalidate_buffers()
                            and set_blocksize(). (me)
clear-backlog-2.gz               -> fixes for a SMP race condition in
                            the main network backlog handling. (me)
dcache-hash.gz                   -> dcache hash dynamic (with my
                            own heuristc). (started from 2.2.13ac1 
                but then reimplemented by me)
free_page.gz                     -> cleanup of the __free_pages
                            interface. (me)
hashed-buffers-2.2.10.gz         -> minor fix to increase the debugging
                            information in the right place. (me)
inode-leak-2.2.10-A.gz           -> make sure to not leak memory
                            by allocating lots of sockets (DoS),
                            and let know the admin to enlarge
                            the max-inodes if the admin really 
                            wants more unfreeable memory in the
                            icache. (me)
kupdate-sigstop-2.2.11-1.gz      -> allow kupdate to be stopped via
                            SIGSTOP (currently it must be stopped
                            by setting interval to zero via
                            sysctl). (me)
no-swapout-2.2.10-B.gz           -> avoid swapin/swapouts during heavy
                            I/O (strictly necessary for decent
                            performances on very I/O and MM loaded
                            servers). (me)
oom-2.2.12-I.gz                  -> assorted OOM fixes (deadlocks in
                            pagein, Alpha SIGBUS fix, avoid
                            sigkilling iopl() application send
                            a sigterm instead, avoid init
                            to be killed), it's the same
                            patch merged by Alan into 2.2.14pre2. (me)
pagecache-hash.gz                -> pagecache hash dynamic (I think
                            it's DaveM's work, literally I took it
                            from 2.2.13ac1). I agree with the
                            heuristc used. It allocates
                            num_physpages buckets for the pagecache
                            and this basically means all the
                            buckets will be filled supposing a
                            perfect hash distribution with all the memory
                            allocated in the cache. (all credits
                            to David S. Miller)
probe-irq-2.3.14-pre2-1.gz       -> avoid a pending irq to be mistaken
                            for a spurious irq. (me)
shrink_all_cache-2.2.10-A.gz     -> make sure that big memory boxes will
                            shrink the cache well enough. (me)
trashing-mem-2.2.10-A.gz         -> heuristic to penalize memory hogs,
                            the system will remains responsive
                            also during heavy swapout. (me)
version.gz                       -> set the EXTRAVERSION to aa2 ;)
wait-event-smp-races.gz          -> Put the two mb() after setting the
                            task state as blocking and before
                            checking if the event is just happend
                            (SMP race fix). (me)
wait4-smp-race.gz                -> _Critical_ SMP race fix.
                            Without this one liner each time you
                            run `ls` from bash, the bash is going
                            to deadlock in wait4 if you are unlucky
                            enough. The race is very small
                            but there are machine under heavy
                            fork load load that reproduced this
                            race regularly after some day of load.
                            The SMP race can happen only
                            with an SMP kernel on a SMP hardware. (me)
wakeup_bdflush-2.2.10-A.gz       -> avoid deadlocking in wakeup_bdflush
                            (the run_task_queue() can sleep for
                            example while running the loop
                            request function). (me)
z-bigmem-2.2.13aa2-6.gz          -> 4GB support on x86. (me and
                            Gerhard Wichert)
z-bigmem-nodebug.gz              -> turn the bigmem code into production
                            mode.
z-bigmem-rawio-2.2.13aa2-1.gz    -> rawio working even with bigmem memory
                            (I started with rawio from 2.2.13ac1
                            and SCT's 2.3.x rawio bounce buffers,
                            all the credits go to Stephen C.
                            Tweedie)
zmagic-all-blocksize.gz          -> allow zmagic binaries to run
                            also on 4k filesystems (it's the same
                            that gone into 2.2.14pre2). (me)

------ stuff present since 2.2.13aa2 --------

Andrea