Messages in this thread | | | Date | Sun, 31 Oct 1999 17:05:17 +0100 (CET) | From | Andrea Arcangeli <> | Subject | 2.2.13aa3 (bugfix release) |
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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
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