- Issue the io that we will later block on prior to doing cluster read ahead
so that it is more likely to be ready when we block.
- Loop issuing clustered reads until we've exhausted the seq count supplied
by the file system.
- Use a sysctl tunable "vfs.read_max" to determine the maximum number of
blocks that we'll read ahead.
kern_sig.c 1.215
kern_thread.c 1.103
kern_exit.c 1.199
proc.h 1.302
Orignal code would suspend an already suspended thread,
if user presses ^Z while a threaded program is running. Also
there is a race between job control and thread_exit(), the
new code tests job control requesting before thread exits,
in wait() syscall, be sure to check child process is fully
stopped, this avoids a later SIGCHILD and returns STOPPED
status twice for a threaded child proc. A thread_stopped()
function is added for common code in several places.
use the underlying AsahiOptical USB chip and thus this quirk may need to
be generalized in the future.
PR: kern/46369
Submitted by: Tim Vanderhoek <vanderh@ecf.utoronto.ca>
MFC After: 3 days
I had commented the #ifdef INVARIANTS checks out to make sure I ran this
code in all kernels and forgot to comment the #ifdefs back in before I
committed.
Spotted by: bmilekic
[1] PHCC = Pointy Hat Correction Commit
ddb 'show locks' command. Thus, move witness_list() to the #ifdef DDB
section and remove extra checks for calling this function outside of
DDB. Also, witness_list() now returns void instead of returning an int.
Reported by: Steve Ames <steve@energistic.com>
Prodded by: davidxu
like secure level but which restricts changes to the keymap. Its
values impose the following restrictions:
0: No restriction - this is the default.
1: Only root can change restricted keys (like boot, panic, ...)
2: Only root can change restricted keys and regular keys.
Other users still can change accents and function keys.
3: Only root can change restricted keys, regular keys and accents.
4: Only root can change any of the keymap (restricted keys, regular
keys, accents and function keys).
Unfortunately, the keyboard's accent map is cleared when a new keymap
is loaded, which makes the distinction between level 3 and level 4
less useful.
The MAC guys might like to make this a policy?
No objections from: -audit about 6 moths ago
Remove an incorrect comment. (Incrementing an object's reference count
does not prevent a process from exiting. The real concern here is that the
physical page must not be deleted until transmission is complete. That is
already handled by the VM system and sf_buf_free().)
Tested by: ken
and due to buffering they would sometimes come out after the actual
error message when mkheaders() failed due to an unknown device, so you'd
get an error messages followed by 20 or 30 lines of harmless warnings.
There are lots of other warning messages in config(8) that are printed
on stdout, but these were the most egregious (at least with LINT).
is more robust and prevents the hijacking of /dev/console for the typical
mistake.
Remove unneeded MAJOR_AUTO uses, it is only needed explicitly now if the
driver source has cross-branch compatibility to old releases.
