diff options
| 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 /include/linux/sched.h | |
| parent | [PATCH] proc: Move proc_maps_operations into task_mmu.c (diff) | |
| download | linux-dev-48e6484d49020dba3578ad117b461e8a391e8f0f.tar.xz linux-dev-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 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 8d11d9310db0..122a25c1b997 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -842,8 +842,6 @@ struct task_struct { u32 self_exec_id; /* Protection of (de-)allocation: mm, files, fs, tty, keyrings */ spinlock_t alloc_lock; -/* Protection of proc_dentry: nesting proc_lock, dcache_lock, write_lock_irq(&tasklist_lock); */ - spinlock_t proc_lock; #ifdef CONFIG_DEBUG_MUTEXES /* mutex deadlock detection */ @@ -856,7 +854,6 @@ struct task_struct { /* VM state */ struct reclaim_state *reclaim_state; - struct dentry *proc_dentry; struct backing_dev_info *backing_dev_info; struct io_context *io_context; |