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| author | Pavel Emelyanov <xemul@openvz.org> | 2008-07-25 01:48:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-25 10:53:47 -0700 |
| commit | b5a7174875ea570cc675f2c503e800db8efdd6a7 (patch) | |
| tree | 19bddd97fa7bfc762a6f2bf3fa88d3df45ba52aa /kernel/acct.c | |
| parent | 0b6b030fc30d169bb406b34b4fc60d99dde4a9c6 (diff) | |
| download | linux-stable-b5a7174875ea570cc675f2c503e800db8efdd6a7.tar.gz linux-stable-b5a7174875ea570cc675f2c503e800db8efdd6a7.tar.bz2 linux-stable-b5a7174875ea570cc675f2c503e800db8efdd6a7.zip | |
bsdacct: turn acct off for all pidns-s on umount time
All the bsd_acct_strcts with opened accounting are linked into a global
list. So, the acct_auto_close(_mnt) walks one and drops the accounting
for each.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/acct.c')
| -rw-r--r-- | kernel/acct.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/kernel/acct.c b/kernel/acct.c index febbbc67157e..7fc9f9dd1e9e 100644 --- a/kernel/acct.c +++ b/kernel/acct.c @@ -89,9 +89,11 @@ struct bsd_acct_struct { struct file *file; struct pid_namespace *ns; struct timer_list timer; + struct list_head list; }; static DEFINE_SPINLOCK(acct_lock); +static LIST_HEAD(acct_list); /* * Called whenever the timer says to check the free space. @@ -188,12 +190,14 @@ static void acct_file_reopen(struct bsd_acct_struct *acct, struct file *file, acct->needcheck = 0; acct->file = NULL; acct->ns = NULL; + list_del(&acct->list); } if (file) { acct->file = file; acct->ns = ns; acct->needcheck = 0; acct->active = 1; + list_add(&acct->list, &acct_list); /* It's been deleted if it was used before so this is safe */ setup_timer(&acct->timer, acct_timeout, (unsigned long)acct); acct->timer.expires = jiffies + ACCT_TIMEOUT*HZ; @@ -314,13 +318,13 @@ void acct_auto_close_mnt(struct vfsmount *m) { struct bsd_acct_struct *acct; - acct = init_pid_ns.bacct; - if (acct == NULL) - return; - spin_lock(&acct_lock); - if (acct->file && acct->file->f_path.mnt == m) - acct_file_reopen(acct, NULL, NULL); +restart: + list_for_each_entry(acct, &acct_list, list) + if (acct->file && acct->file->f_path.mnt == m) { + acct_file_reopen(acct, NULL, NULL); + goto restart; + } spin_unlock(&acct_lock); } @@ -335,13 +339,13 @@ void acct_auto_close(struct super_block *sb) { struct bsd_acct_struct *acct; - acct = init_pid_ns.bacct; - if (acct == NULL) - return; - spin_lock(&acct_lock); - if (acct->file && acct->file->f_path.mnt->mnt_sb == sb) - acct_file_reopen(acct, NULL, NULL); +restart: + list_for_each_entry(acct, &acct_list, list) + if (acct->file && acct->file->f_path.mnt->mnt_sb == sb) { + acct_file_reopen(acct, NULL, NULL); + goto restart; + } spin_unlock(&acct_lock); } |