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/proc_fs.h | |
parent | 662795deb854b31501e0ffb42b7f0cce802c134a (diff) |
[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/proc_fs.h')
-rw-r--r-- | include/linux/proc_fs.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 9dd84884abb1..d4d2081dbaf7 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -99,9 +99,8 @@ extern void proc_misc_init(void); struct mm_struct; +void proc_flush_task(struct task_struct *task); struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *); -struct dentry *proc_pid_unhash(struct task_struct *p); -void proc_pid_flush(struct dentry *proc_dentry); int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir); unsigned long task_vsize(struct mm_struct *); int task_statm(struct mm_struct *, int *, int *, int *, int *); @@ -211,8 +210,7 @@ static inline void proc_net_remove(const char *name) #define proc_net_create(name, mode, info) ({ (void)(mode), NULL; }) static inline void proc_net_remove(const char *name) {} -static inline struct dentry *proc_pid_unhash(struct task_struct *p) { return NULL; } -static inline void proc_pid_flush(struct dentry *proc_dentry) { } +static inline void proc_flush_task(struct task_struct *task) { } static inline struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode, struct proc_dir_entry *parent) { return NULL; } |