mount.mnt_hash is RCU-protected, and therefore we must use the RCU variants to manipulate the list.
Signed-off-by: Max Kellermann <[email protected]> --- fs/namespace.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/fs/namespace.c b/fs/namespace.c index 2aa0a14..295a0c0 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -22,6 +22,7 @@ #include <linux/fsnotify.h> /* fsnotify_vfsmount_delete */ #include <linux/uaccess.h> #include <linux/proc_ns.h> +#include <linux/rculist.h> #include <linux/magic.h> #include "pnode.h" #include "internal.h" @@ -739,8 +740,8 @@ static void attach_mnt(struct mount *mnt, struct mountpoint *mp) { mnt_set_mountpoint(parent, mp, mnt); - list_add_tail(&mnt->mnt_hash, mount_hashtable + - hash(&parent->mnt, mp->m_dentry)); + list_add_tail_rcu(&mnt->mnt_hash, mount_hashtable + + hash(&parent->mnt, mp->m_dentry)); list_add_tail(&mnt->mnt_child, &parent->mnt_mounts); } @@ -762,8 +763,8 @@ static void commit_tree(struct mount *mnt) list_splice(&head, n->list.prev); - list_add_tail(&mnt->mnt_hash, mount_hashtable + - hash(&parent->mnt, mnt->mnt_mountpoint)); + list_add_tail_rcu(&mnt->mnt_hash, mount_hashtable + + hash(&parent->mnt, mnt->mnt_mountpoint)); list_add_tail(&mnt->mnt_child, &parent->mnt_mounts); touch_mnt_namespace(n); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
