diff options
Diffstat (limited to 'fs/cachefiles/namei.c')
| -rw-r--r-- | fs/cachefiles/namei.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index 14ac4806e291..d5db84a1ee0d 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -19,6 +19,7 @@ #include <linux/mount.h> #include <linux/namei.h> #include <linux/security.h> +#include <linux/slab.h> #include "internal.h" #define CACHEFILES_KEYBUF_SIZE 512 @@ -348,7 +349,17 @@ int cachefiles_delete_object(struct cachefiles_cache *cache, dir = dget_parent(object->dentry); mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT); - ret = cachefiles_bury_object(cache, dir, object->dentry); + + /* we need to check that our parent is _still_ our parent - it may have + * been renamed */ + if (dir == object->dentry->d_parent) { + ret = cachefiles_bury_object(cache, dir, object->dentry); + } else { + /* it got moved, presumably by cachefilesd culling it, so it's + * no longer in the key path and we can ignore it */ + mutex_unlock(&dir->d_inode->i_mutex); + ret = 0; + } dput(dir); _leave(" = %d", ret); |