FreeBSD

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des         2004/05/18 23:40:52 PDT

  FreeBSD src repository

  Modified files:        (Branch: RELENG_4_7)
    .                    UPDATING 
  Modified files:        (Branch: RELENG_4_8)
    .                    UPDATING 
  Modified files:        (Branch: RELENG_4_9)
    .                    UPDATING 
  Modified files:        (Branch: RELENG_5_0)
    .                    UPDATING 
  Modified files:        (Branch: RELENG_5_1)
    .                    UPDATING 
  Modified files:        (Branch: RELENG_5_2)
    .                    UPDATING 
  Modified files:        (Branch: RELENG_4_7)
    sys/conf             newvers.sh 
  Log:
  Bump and document patch level.
  
  Approved by:    so
  
  Revision        Changes    Path
  1.73.2.74.2.31  +3 -0      src/UPDATING
  1.73.2.80.2.24  +3 -0      src/UPDATING
  1.73.2.89.2.9   +3 -0      src/UPDATING
  1.229.2.27      +3 -0      src/UPDATING
  1.251.2.19      +3 -0      src/UPDATING
  1.282.2.15      +3 -0      src/UPDATING
  1.44.2.26.2.29  +1 -1      src/sys/conf/newvers.sh

很想知道是怎么commit的……

If everything goes ok, then FreeBSD 4.10-RELEASE would be released by the end of this week. Now we are at RC3.

To quote Matthew Dillon:

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    You can actually run gdb on a live kernel like this:

    gdb -k /dev/mem /path/to/kernel.debug

    You can then use the 'proc' command to switch to a process (give it a
    pid), and do a stack backtrace.  That part only really works if the
    process is blocked on something (i.e. not running).

    But you can also dig around kernel globals and various data structures
    and that can be quite useful on a live system.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>

Yes, it is long awaited and Kirk recently announced that his new book (written with George Neville-Neil) about the design and implementation of the FreeBSD 5.2 Operating System has been finished, and will be ready for sale in early August 2004 (ISBN 0-201-70245-2, Addison-Wesley).

To summarize the release engineering process: 4.10-RC3 has delayed again so 4.10-RELEASE won’t be released soon. Recently, RELENG_4_10 branch has received several critical bugfixes. I personally requested a MFC for a security vulnerablity related with timedc, and Tim has MFC’ed some other security related fixes. Matthew Dillon has submitted some VM patches (committed by Ken Smith) and they all get into RC3.

Olivier Houchard (cognet) has just committed several files to support the ARM architecture. I have already slipped tags for this change.

From the commit log:

Close an interrupt race between vm_page_lookup() and (typically) a vm_page_sleep_busy() check by using the correct spl protection. An interrupt can occur inbetween the two operations and unbusy/free the page in question, causing the busy check to fail and for the code to fall through and then operate on a page that may have been freed and possibly even reused. Also note that vm_page_grab() had the same issue between the lookup, busy check, and vm_page_busy() call.

以前觉得Ruslan Ermilov (ru at FreeBSD dot org, mdoc(7) maintainer)一般只是commit一些Makefile，在整个project里面不过是一个做简单maintain工作的角色，真到自己动手写Makefile的时候才发现，想把Makefile写好可真是太难了。

I am thinking of the possiblity of backporting / porting several DragonFly and NetBSD, even OpenBSD’s features, to FreeBSD, to increase its performance, stablity, and the code readablity.