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| author | Eric W. Biederman <ebiederm@xmission.com> | 2006-06-26 00:25:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 09:58:24 -0700 |
| commit | 48e6484d49020dba3578ad117b461e8a391e8f0f (patch) | |
| tree | 7824ca84bfe71c3fe2c09a1fedc31106fec4f500 /kernel/fork.c | |
| parent | 662795deb854b31501e0ffb42b7f0cce802c134a (diff) | |
| download | blackbird-op-linux-48e6484d49020dba3578ad117b461e8a391e8f0f.tar.gz blackbird-op-linux-48e6484d49020dba3578ad117b461e8a391e8f0f.zip | |
[PATCH] proc: Rewrite the proc dentry flush on exit optimization
To keep the dcache from filling up with dead /proc entries we flush them on
process exit. However over the years that code has gotten hairy with a
dentry_pointer and a lock in task_struct and misdocumented as a correctness
feature.
I have rewritten this code to look and see if we have a corresponding entry in
the dcache and if so flush it on process exit. This removes the extra fields
in the task_struct and allows me to trivially handle the case of a
/proc/<tgid>/task/<pid> entry as well as the current /proc/<pid> entries.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index dfd10cb370c3..79e91046f36e 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -993,13 +993,10 @@ static task_t *copy_process(unsigned long clone_flags, if (put_user(p->pid, parent_tidptr)) goto bad_fork_cleanup; - p->proc_dentry = NULL; - INIT_LIST_HEAD(&p->children); INIT_LIST_HEAD(&p->sibling); p->vfork_done = NULL; spin_lock_init(&p->alloc_lock); - spin_lock_init(&p->proc_lock); clear_tsk_thread_flag(p, TIF_SIGPENDING); init_sigpending(&p->pending); |
