diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-19 14:07:55 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-19 14:07:55 -0700 |
| commit | 4a1f2b0fba89cdb3b2b1be99a7411bfd24d61be5 (patch) | |
| tree | e14158bdaf2a4723f98fc2411fb65416edb9f90b /kernel/pid_namespace.c | |
| parent | deb521c44fa529b24cc78a64702757a683f82487 (diff) | |
| parent | fe73fbe1c5eda709084dedb66cbdd4b86826cce7 (diff) | |
Merge branch 'akpm' (Fixes from Andrew)
Merge misc fixes from Andrew Morton:
"Seven fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (7 patches)
lib/dma-debug.c: fix __hash_bucket_find()
mm: compaction: correct the nr_strict va isolated check for CMA
firmware/memmap: avoid type conflicts with the generic memmap_init()
pidns: remove recursion from free_pid_ns()
drivers/video/backlight/lm3639_bl.c: return proper error in lm3639_bled_mode_store() error paths
kernel/sys.c: fix stack memory content leak via UNAME26
linux/coredump.h needs asm/siginfo.h
Diffstat (limited to 'kernel/pid_namespace.c')
| -rw-r--r-- | kernel/pid_namespace.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 478bad2745e..eb00be20581 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -133,19 +133,26 @@ struct pid_namespace *copy_pid_ns(unsigned long flags, struct pid_namespace *old return create_pid_namespace(old_ns); } -void free_pid_ns(struct kref *kref) +static void free_pid_ns(struct kref *kref) { - struct pid_namespace *ns, *parent; + struct pid_namespace *ns; ns = container_of(kref, struct pid_namespace, kref); - - parent = ns->parent; destroy_pid_namespace(ns); +} - if (parent != NULL) - put_pid_ns(parent); +void put_pid_ns(struct pid_namespace *ns) +{ + struct pid_namespace *parent; + + while (ns != &init_pid_ns) { + parent = ns->parent; + if (!kref_put(&ns->kref, free_pid_ns)) + break; + ns = parent; + } } -EXPORT_SYMBOL_GPL(free_pid_ns); +EXPORT_SYMBOL_GPL(put_pid_ns); void zap_pid_ns_processes(struct pid_namespace *pid_ns) { |