diff options
| author | Jan Lübbe <jluebbe@lasnet.de> | 2007-09-29 12:47:51 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-09-29 13:00:15 -0400 |
| commit | a64314e62d89562b6fc77593648bec3acc35bf61 (patch) | |
| tree | 964aba05c1293c2436088905001595a8209e44d1 /Documentation/devices.txt | |
| parent | ed7fdff5d6754f9ef9e47bbf0b171d3d96fb7e41 (diff) | |
fix console change race exposed by CFS
The new behaviour of CFS exposes a race which occurs if a switch is
requested when vt_mode.mode is VT_PROCESS.
The process with vc->vt_pid is signaled before vc->vt_newvt is set.
This causes the switch to fail when triggered by the monitoing process
because the target is still -1.
[ If the signal sending fails, the subsequent "reset_vc(vc)" will then
reset vt_newvt to -1, so this works for that case too. - Linus ]
Signed-off-by: Jan Lübbe <jluebbe@lasnet.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/devices.txt')
0 files changed, 0 insertions, 0 deletions