diff options
| -rw-r--r-- | fs/internal.h | 2 | ||||
| -rw-r--r-- | fs/namespace.c | 46 |
2 files changed, 18 insertions, 30 deletions
diff --git a/fs/internal.h b/fs/internal.h index e8a0b245177..0663568b124 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -71,8 +71,6 @@ extern void release_mounts(struct list_head *); extern void umount_tree(struct vfsmount *, int, struct list_head *); extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int); extern int finish_automount(struct vfsmount *, struct path *); -extern int do_add_mount(struct vfsmount *, struct path *, int); -extern void mnt_clear_expiry(struct vfsmount *); extern void mnt_make_longterm(struct vfsmount *); extern void mnt_make_shortterm(struct vfsmount *); diff --git a/fs/namespace.c b/fs/namespace.c index 31aefc8e5fa..7b0b9537169 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1872,6 +1872,8 @@ out: return err; } +static int do_add_mount(struct vfsmount *, struct path *, int); + /* * create a new mount for userspace and request it to be added into the * namespace's tree @@ -1909,25 +1911,31 @@ int finish_automount(struct vfsmount *m, struct path *path) if (m->mnt_sb == path->mnt->mnt_sb && m->mnt_root == path->dentry) { - mnt_clear_expiry(m); - mntput(m); - mntput(m); - return -ELOOP; + err = -ELOOP; + goto fail; } err = do_add_mount(m, path, path->mnt->mnt_flags | MNT_SHRINKABLE); - if (err) { - mnt_clear_expiry(m); - mntput(m); - mntput(m); + if (!err) + return 0; +fail: + /* remove m from any expiration list it may be on */ + if (!list_empty(&m->mnt_expire)) { + down_write(&namespace_sem); + br_write_lock(vfsmount_lock); + list_del_init(&m->mnt_expire); + br_write_unlock(vfsmount_lock); + up_write(&namespace_sem); } + mntput(m); + mntput(m); return err; } /* * add a mount into a namespace's mount tree */ -int do_add_mount(struct vfsmount *newmnt, struct path *path, int mnt_flags) +static int do_add_mount(struct vfsmount *newmnt, struct path *path, int mnt_flags) { int err; @@ -1954,11 +1962,7 @@ int do_add_mount(struct vfsmount *newmnt, struct path *path, int mnt_flags) goto unlock; newmnt->mnt_flags = mnt_flags; - if ((err = graft_tree(newmnt, path))) - goto unlock; - - up_write(&namespace_sem); - return 0; + err = graft_tree(newmnt, path); unlock: up_write(&namespace_sem); @@ -1983,20 +1987,6 @@ void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list) EXPORT_SYMBOL(mnt_set_expiry); /* - * Remove a vfsmount from any expiration list it may be on - */ -void mnt_clear_expiry(struct vfsmount *mnt) -{ - if (!list_empty(&mnt->mnt_expire)) { - down_write(&namespace_sem); - br_write_lock(vfsmount_lock); - list_del_init(&mnt->mnt_expire); - br_write_unlock(vfsmount_lock); - up_write(&namespace_sem); - } -} - -/* * process a list of expirable mountpoints with the intent of discarding any * mountpoints that aren't in use and haven't been touched since last we came * here |