diff options
| -rw-r--r-- | fs/namespace.c | 33 | ||||
| -rw-r--r-- | fs/pnode.c | 4 | ||||
| -rw-r--r-- | fs/pnode.h | 3 |
3 files changed, 16 insertions, 24 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 7563270..fa93d54 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1121,7 +1121,7 @@ EXPORT_SYMBOL(may_umount); static LIST_HEAD(unmounted); /* protected by namespace_sem */ -void release_mounts(struct list_head *head) +static void release_mounts(struct list_head *head) { struct mount *mnt; while (!list_empty(head)) { @@ -1157,7 +1157,7 @@ static void namespace_unlock(void) * vfsmount lock must be held for write * namespace_sem must be held for write */ -void umount_tree(struct mount *mnt, int propagate, struct list_head *kill) +void umount_tree(struct mount *mnt, int propagate) { LIST_HEAD(tmp_list); struct mount *p; @@ -1181,7 +1181,7 @@ void umount_tree(struct mount *mnt, int propagate, struct list_head *kill) } change_mnt_propagation(p, MS_PRIVATE); } - list_splice(&tmp_list, kill); + list_splice(&tmp_list, &unmounted); } static void shrink_submounts(struct mount *mnt); @@ -1190,7 +1190,6 @@ static int do_umount(struct mount *mnt, int flags) { struct super_block *sb = mnt->mnt.mnt_sb; int retval; - LIST_HEAD(umount_list); retval = security_sb_umount(&mnt->mnt, flags); if (retval) @@ -1267,7 +1266,7 @@ static int do_umount(struct mount *mnt, int flags) retval = -EBUSY; if (flags & MNT_DETACH || !propagate_mount_busy(mnt, 2)) { if (!list_empty(&mnt->mnt_list)) - umount_tree(mnt, 1, &unmounted); + umount_tree(mnt, 1); retval = 0; } br_write_unlock(&vfsmount_lock); @@ -1401,11 +1400,9 @@ struct mount *copy_tree(struct mount *mnt, struct dentry *dentry, return res; out: if (res) { - LIST_HEAD(umount_list); br_write_lock(&vfsmount_lock); - umount_tree(res, 0, &umount_list); + umount_tree(res, 0); br_write_unlock(&vfsmount_lock); - release_mounts(&umount_list); } return q; } @@ -1418,7 +1415,7 @@ struct vfsmount *collect_mounts(struct path *path) down_write(&namespace_sem); tree = copy_tree(real_mount(path->mnt), path->dentry, CL_COPY_ALL | CL_PRIVATE); - up_write(&namespace_sem); + namespace_unlock(); if (IS_ERR(tree)) return NULL; return &tree->mnt; @@ -1428,7 +1425,7 @@ void drop_collected_mounts(struct vfsmount *mnt) { down_write(&namespace_sem); br_write_lock(&vfsmount_lock); - umount_tree(real_mount(mnt), 0, &unmounted); + umount_tree(real_mount(mnt), 0); br_write_unlock(&vfsmount_lock); namespace_unlock(); } @@ -1619,7 +1616,7 @@ static void unlock_mount(struct mountpoint *where) { struct dentry *dentry = where->m_dentry; put_mountpoint(where); - up_write(&namespace_sem); + namespace_unlock(); mutex_unlock(&dentry->d_inode->i_mutex); } @@ -1693,7 +1690,6 @@ static int do_change_type(struct path *path, int flag) static int do_loopback(struct path *path, const char *old_name, int recurse) { - LIST_HEAD(umount_list); struct path old_path; struct mount *mnt = NULL, *old, *parent; struct mountpoint *mp; @@ -1736,12 +1732,11 @@ static int do_loopback(struct path *path, const char *old_name, err = graft_tree(mnt, parent, mp); if (err) { br_write_lock(&vfsmount_lock); - umount_tree(mnt, 0, &umount_list); + umount_tree(mnt, 0); br_write_unlock(&vfsmount_lock); } out2: unlock_mount(mp); - release_mounts(&umount_list); out: path_put(&old_path); return err; @@ -2080,7 +2075,7 @@ void mark_mounts_for_expiry(struct list_head *mounts) while (!list_empty(&graveyard)) { mnt = list_first_entry(&graveyard, struct mount, mnt_expire); touch_mnt_namespace(mnt->mnt_ns); - umount_tree(mnt, 1, &unmounted); + umount_tree(mnt, 1); } br_write_unlock(&vfsmount_lock); namespace_unlock(); @@ -2151,7 +2146,7 @@ static void shrink_submounts(struct mount *mnt) m = list_first_entry(&graveyard, struct mount, mnt_expire); touch_mnt_namespace(m->mnt_ns); - umount_tree(m, 1, &unmounted); + umount_tree(m, 1); } } } @@ -2385,7 +2380,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns, copy_flags |= CL_SHARED_TO_SLAVE; new = copy_tree(old, old->mnt.mnt_root, copy_flags); if (IS_ERR(new)) { - up_write(&namespace_sem); + namespace_unlock(); free_mnt_ns(new_ns); return ERR_CAST(new); } @@ -2416,7 +2411,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns, p = next_mnt(p, old); q = next_mnt(q, new); } - up_write(&namespace_sem); + namespace_unlock(); if (rootmnt) mntput(rootmnt); @@ -2740,7 +2735,7 @@ void put_mnt_ns(struct mnt_namespace *ns) return; down_write(&namespace_sem); br_write_lock(&vfsmount_lock); - umount_tree(ns->root, 0, &unmounted); + umount_tree(ns->root, 0); br_write_unlock(&vfsmount_lock); namespace_unlock(); free_mnt_ns(ns); @@ -225,7 +225,6 @@ int propagate_mnt(struct mount *dest_mnt, struct mountpoint *dest_mp, struct mount *prev_dest_mnt = dest_mnt; struct mount *prev_src_mnt = source_mnt; LIST_HEAD(tmp_list); - LIST_HEAD(umount_list); for (m = propagation_next(dest_mnt, dest_mnt); m; m = propagation_next(m, dest_mnt)) { @@ -261,10 +260,9 @@ out: br_write_lock(&vfsmount_lock); while (!list_empty(&tmp_list)) { child = list_first_entry(&tmp_list, struct mount, mnt_hash); - umount_tree(child, 0, &umount_list); + umount_tree(child, 0); } br_write_unlock(&vfsmount_lock); - release_mounts(&umount_list); return ret; } @@ -40,8 +40,7 @@ int get_dominating_id(struct mount *mnt, const struct path *root); unsigned int mnt_get_count(struct mount *mnt); void mnt_set_mountpoint(struct mount *, struct mountpoint *, struct mount *); -void release_mounts(struct list_head *); -void umount_tree(struct mount *, int, struct list_head *); +void umount_tree(struct mount *, int); struct mount *copy_tree(struct mount *, struct dentry *, int); bool is_path_reachable(struct mount *, struct dentry *, const struct path *root); |
