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Konstantin Belousov 724ce55b5b While fixing the looping of a thread while devfs vnode is reclaimed,
r179247 introduced a possibility of devfs_allocv() returning spurious
ENOENT. If the vnode is selected by vnlru daemon for reclamation, then
devfs_allocv() can get ENOENT from vget() due to devfs_close() dropping
vnode lock around the call to cdevsw d_close method.

Use LK_RETRY in the vget() call, and do some part of the devfs_reclaim()
work in devfs_allocv(), clearing vp->v_data and de->de_vnode. Retry the
allocation of the vnode, now with de->de_vnode == NULL.

The check vp->v_data == NULL at the start of devfs_close() cannot be
affected by the change, since vnode lock must be held while VI_DOOMED
is set, and only dropped after the check.

Reported and tested by:	Kohji Okuno <okuno.kohji jp panasonic com>
Reviewed by:	attilio
MFC after:	3 weeks
2011-07-13 21:07:41 +00:00
bin sh(1): Extend documentation about subshells. 2011-07-10 15:02:25 +00:00
cddl Add a new "REFCOMPRESSRATIO" property. 2011-06-28 07:52:01 +00:00
contrib Add a leading space to the status messages output after toggling the 2011-07-11 16:51:29 +00:00
crypto Fix clang warning (why is there nowhere yyparse() is declared?). 2011-05-18 20:57:23 +00:00
etc Make sure we load kernel modules from the same path as the running kernel 2011-07-10 23:47:03 +00:00
games Minor typo, fix 2 attributions 2011-06-09 06:10:39 +00:00
gnu Provide a simple manual page for libprocstat(3). 2011-07-12 13:46:13 +00:00
include Revert the previous change and add xdr_sizeof 2011-07-10 14:03:13 +00:00
kerberos5 The kerberos5 tools are only used as build tools but not otherwise and 2011-06-25 16:13:56 +00:00
lib Document RFTSIGZMB. Fix spelling of SIGCHLD. Note that signals are 2011-07-12 20:38:42 +00:00
libexec Acknowledge Edwin Groothuis for the major rewrite he 2011-06-24 05:41:38 +00:00
release Per request of the docs team, install docs as packages, instead of via 2011-07-09 23:01:54 +00:00
rescue Finally... Import the latest open-source ZFS version - (SPA) 28. 2011-02-27 19:41:40 +00:00
sbin When exiting with error because of an invalid command line argument 2011-07-13 05:56:51 +00:00
secure Upgrade to OpenSSH 5.8p2. 2011-05-04 07:34:44 +00:00
share Sort Xr's by number then by name 2011-07-12 14:18:54 +00:00
sys While fixing the looping of a thread while devfs vnode is reclaimed, 2011-07-13 21:07:41 +00:00
tools posix_spawn: If an error is detected in the child process, reap the zombie. 2011-07-10 14:20:11 +00:00
usr.bin Truncate link addresses like it is done for any 2011-07-12 11:47:08 +00:00
usr.sbin Run newaliases at the end of the install process. 2011-07-13 13:25:12 +00:00
COPYRIGHT Happy New Year 2011. 2010-12-31 18:07:16 +00:00
LOCKS
MAINTAINERS Encourage Ben Laurie to finish getting his commit bit by appointing him 2011-05-14 17:44:12 +00:00
Makefile It's a bit odd, but "make update" in src/ can also update the ports/, 2011-06-16 12:28:37 +00:00
Makefile.inc1 It's a bit odd, but "make update" in src/ can also update the ports/, 2011-06-16 12:28:37 +00:00
Makefile.mips Retire TARGET_ABI. 2011-01-07 20:26:33 +00:00
ObsoleteFiles.inc Add more obsolete files. 2011-07-10 15:01:14 +00:00
README Vendor import of OpenSSH 5.8p2 2011-05-03 11:22:37 +00:00
UPDATING Clarify that we broke pfsync(4) backward compat with the pf commit r223637. 2011-06-29 13:12:15 +00:00

This is the top level of the FreeBSD source directory.  This file
was last revised on:
$FreeBSD$

For copyright information, please see the file COPYRIGHT in this
directory (additional copyright information also exists for some
sources in this tree - please see the specific source directories for
more information).

The Makefile in this directory supports a number of targets for
building components (or all) of the FreeBSD source tree, the most
commonly used one being ``world'', which rebuilds and installs
everything in the FreeBSD system from the source tree except the
kernel, the kernel-modules and the contents of /etc.  The ``world''
target should only be used in cases where the source tree has not
changed from the currently running version.  See:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html
for more information, including setting make(1) variables.

The ``buildkernel'' and ``installkernel'' targets build and install
the kernel and the modules (see below).  Please see the top of
the Makefile in this directory for more information on the
standard build targets and compile-time flags.

Building a kernel is a somewhat more involved process, documentation
for which can be found at:
   http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html
And in the config(8) man page.
Note: If you want to build and install the kernel with the
``buildkernel'' and ``installkernel'' targets, you might need to build
world before.  More information is available in the handbook.

The sample kernel configuration files reside in the sys/<arch>/conf
sub-directory (assuming that you've installed the kernel sources), the
file named GENERIC being the one used to build your initial installation
kernel.  The file NOTES contains entries and documentation for all possible
devices, not just those commonly used.  It is the successor of the ancient
LINT file, but in contrast to LINT, it is not buildable as a kernel but a
pure reference and documentation file.


Source Roadmap:
---------------
bin		System/user commands.

cddl		Various commands and libraries under the Common Development
		and Distribution License.

contrib		Packages contributed by 3rd parties.

crypto		Cryptography stuff (see crypto/README).

etc		Template files for /etc.

games		Amusements.

gnu		Various commands and libraries under the GNU Public License.
		Please see gnu/COPYING* for more information.

include		System include files.

kerberos5	Kerberos5 (Heimdal) package.

lib		System libraries.

libexec		System daemons.

release		Release building Makefile & associated tools.

rescue		Build system for statically linked /rescue utilities.

sbin		System commands.

secure		Cryptographic libraries and commands.

share		Shared resources.

sys		Kernel sources.

tools		Utilities for regression testing and miscellaneous tasks.

usr.bin		User commands.

usr.sbin	System administration commands.


For information on synchronizing your source tree with one or more of
the FreeBSD Project's development branches, please see:

  http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html