From: Arjan van de Ven <arjanv@redhat.com>
If someone removes a /proc directory which still has subdirectories it will
lead to very nasty things (dentries remaining on hash chains etc etc etc).
The BUG_ON in the patch below will catch this nasty situation.
---
fs/proc/generic.c | 1 +
1 files changed, 1 insertion(+)
diff -puN fs/proc/generic.c~procfs-dangling-subdir-fix fs/proc/generic.c
--- 25/fs/proc/generic.c~procfs-dangling-subdir-fix 2004-03-06 12:32:02.000000000 -0800
+++ 25-akpm/fs/proc/generic.c 2004-03-06 12:32:02.000000000 -0800
@@ -661,6 +661,7 @@ void remove_proc_entry(const char *name,
proc_alloc_map);
proc_kill_inodes(de);
de->nlink = 0;
+ WARN_ON(de->subdir);
if (!atomic_read(&de->count))
free_proc_entry(de);
else {
_