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| author | Jan Engelhardt <jengelh@linux01.gwdg.de> | 2007-05-08 00:28:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 11:15:07 -0700 |
| commit | b73a7e76c1eeaa770a41554698917c3c45686a07 (patch) | |
| tree | 70c9016ca24bc06d1781ace007ce557bbe3d3cf8 /kernel/kmod.c | |
| parent | 6672f76a5a1878d42264c1deba8f1ab52b4618d9 (diff) | |
| download | lwn-b73a7e76c1eeaa770a41554698917c3c45686a07.tar.gz lwn-b73a7e76c1eeaa770a41554698917c3c45686a07.zip | |
Fix kevent's childs priority greediness
Fix kevent's childs priority greediness. Such tasks were always scheduled
at nice level -5 and, at that time, udev stole us the CPU time with -5.
Already posted at http://lkml.org/lkml/2005/1/10/85
[akpm@linux-foundation.org: add comment]
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/kmod.c')
| -rw-r--r-- | kernel/kmod.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/kmod.c b/kernel/kmod.c index 11c584cd16b3..49cc4b9c1a8d 100644 --- a/kernel/kmod.c +++ b/kernel/kmod.c @@ -165,6 +165,12 @@ static int ____call_usermodehelper(void *data) /* We can run anywhere, unlike our parent keventd(). */ set_cpus_allowed(current, CPU_MASK_ALL); + /* + * Our parent is keventd, which runs with elevated scheduling priority. + * Avoid propagating that into the userspace child. + */ + set_user_nice(current, 0); + retval = -EPERM; if (current->fs->root) retval = kernel_execve(sub_info->path, |