diff options
| author | Andrew Morton <akpm@osdl.org> | 2005-10-23 12:57:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-23 16:38:39 -0700 |
| commit | 8d3b35914aa54232b27e6a2b57d84092aadc5e86 (patch) | |
| tree | 809be8fad6743a751964677e68c5c01af3198e4b /lib | |
| parent | c0fef676bbd75e711711ed3ff5bebb7bfd1bdb00 (diff) | |
[PATCH] inotify/idr leak fix
Fix a bug which was reported and diagnosed by
Stefan Jones <stefan.jones@churchillrandoms.co.uk>
IDR trees include a cache of idr_layer objects. There's no way to destroy
this cache, so when we discard an overall idr tree we end up leaking some
memory.
Add and use idr_destroy() for this. v9fs and infiniband also need to use
idr_destroy() to avoid leaks.
Or, we make the cache global, like radix_tree_preload(). Which is probably
better. Later.
Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/idr.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/idr.c b/lib/idr.c index 6415d053e2bf..d4df21debc4d 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -346,6 +346,19 @@ void idr_remove(struct idr *idp, int id) EXPORT_SYMBOL(idr_remove); /** + * idr_destroy - release all cached layers within an idr tree + * idp: idr handle + */ +void idr_destroy(struct idr *idp) +{ + while (idp->id_free_cnt) { + struct idr_layer *p = alloc_layer(idp); + kmem_cache_free(idr_layer_cache, p); + } +} +EXPORT_SYMBOL(idr_destroy); + +/** * idr_find - return pointer for given id * @idp: idr handle * @id: lookup key |