NEWS: add section about udev locking

This commit is contained in:
Kay Sievers 2014-06-11 12:00:47 +02:00
parent f31cf2b6d0
commit 4196a3ead3
2 changed files with 18 additions and 1 deletions

17
NEWS
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@ -1,5 +1,22 @@
systemd System and Service Manager
CHANGES WITH 214:
* As an experimental feature, udev now tries to lock the
disk device node (flock(LOCK_SH|LOCK_NB)) while it
executes events for the disk or any of its partitions.
Applications like partitioning programs can lock the
disk device node (flock(LOCK_EX)) and claim temporary
device ownership that way; udev will entirely skip all event
handling for this disk and its partitions. If the disk
was opened for writing, the close will trigger a partition
table rescan in udev's "watch" facility, and if needed
synthesize "change" events for the disk and all its partions.
This is now unconditionally enabled, if it turns out to
cause major problems, we might turn it on only for specific
devices, or might need to disable it entirely. Device-mapper
devices are excluded from this logic.
CHANGES WITH 213:
* A new "systemd-timesyncd" daemon has been added for

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@ -34,7 +34,7 @@ AC_USE_SYSTEM_EXTENSIONS
AC_SYS_LARGEFILE
AC_PREFIX_DEFAULT([/usr])
AM_MAINTAINER_MODE([enable])
AM_INIT_AUTOMAKE([foreign 1.11 -Wall -Wno-portability silent-rules tar-pax no-dist-gzip dist-xz subdir-objects check-news])
AM_INIT_AUTOMAKE([foreign 1.11 -Wall -Wno-portability silent-rules tar-pax no-dist-gzip dist-xz subdir-objects])
AM_SILENT_RULES([yes])
AC_CANONICAL_HOST
AC_DEFINE_UNQUOTED([CANONICAL_HOST], "$host", [Canonical host string.])