diff options
| -rw-r--r-- | fs/pnode.c | 97 |
1 files changed, 47 insertions, 50 deletions
@@ -13,19 +13,19 @@ #include "pnode.h" /* return the next shared peer mount of @p */ -static inline struct vfsmount *next_peer(struct vfsmount *p) +static inline struct mount *next_peer(struct mount *p) { - return list_entry(p->mnt_share.next, struct vfsmount, mnt_share); + return list_entry(p->mnt.mnt_share.next, struct mount, mnt.mnt_share); } -static inline struct vfsmount *first_slave(struct vfsmount *p) +static inline struct mount *first_slave(struct mount *p) { - return list_entry(p->mnt_slave_list.next, struct vfsmount, mnt_slave); + return list_entry(p->mnt.mnt_slave_list.next, struct mount, mnt.mnt_slave); } -static inline struct vfsmount *next_slave(struct vfsmount *p) +static inline struct mount *next_slave(struct mount *p) { - return list_entry(p->mnt_slave.next, struct vfsmount, mnt_slave); + return list_entry(p->mnt.mnt_slave.next, struct mount, mnt.mnt_slave); } static struct mount *get_peer_under_root(struct mount *mnt, @@ -39,7 +39,7 @@ static struct mount *get_peer_under_root(struct mount *mnt, if (m->mnt.mnt_ns == ns && is_path_reachable(m, m->mnt.mnt_root, root)) return m; - m = real_mount(next_peer(&m->mnt)); + m = next_peer(m); } while (m != mnt); return NULL; @@ -74,11 +74,11 @@ static int do_make_slave(struct mount *mnt) * same root dentry. If none is available then * slave it to anything that is available. */ - while ((peer_mnt = real_mount(next_peer(&peer_mnt->mnt))) != mnt && + while ((peer_mnt = next_peer(peer_mnt)) != mnt && peer_mnt->mnt.mnt_root != mnt->mnt.mnt_root) ; if (peer_mnt == mnt) { - peer_mnt = real_mount(next_peer(&mnt->mnt)); + peer_mnt = next_peer(mnt); if (peer_mnt == mnt) peer_mnt = NULL; } @@ -141,21 +141,20 @@ void change_mnt_propagation(struct mount *mnt, int type) * vfsmount found while iterating with propagation_next() is * a peer of one we'd found earlier. */ -static struct vfsmount *propagation_next(struct vfsmount *m, - struct vfsmount *origin) +static struct mount *propagation_next(struct mount *m, + struct mount *origin) { /* are there any slaves of this mount? */ - if (!IS_MNT_NEW(m) && !list_empty(&m->mnt_slave_list)) + if (!IS_MNT_NEW(&m->mnt) && !list_empty(&m->mnt.mnt_slave_list)) return first_slave(m); while (1) { - struct vfsmount *next; - struct vfsmount *master = m->mnt_master; + struct mount *master = real_mount(m->mnt.mnt_master); - if (master == origin->mnt_master) { - next = next_peer(m); - return ((next == origin) ? NULL : next); - } else if (m->mnt_slave.next != &master->mnt_slave_list) + if (&master->mnt == origin->mnt.mnt_master) { + struct mount *next = next_peer(m); + return (next == origin) ? NULL : next; + } else if (m->mnt.mnt_slave.next != &master->mnt.mnt_slave_list) return next_slave(m); /* back at master */ @@ -172,25 +171,25 @@ static struct vfsmount *propagation_next(struct vfsmount *m, * @type return CL_SLAVE if the new mount has to be * cloned as a slave. */ -static struct vfsmount *get_source(struct vfsmount *dest, - struct vfsmount *last_dest, - struct vfsmount *last_src, - int *type) +static struct mount *get_source(struct mount *dest, + struct mount *last_dest, + struct mount *last_src, + int *type) { - struct vfsmount *p_last_src = NULL; - struct vfsmount *p_last_dest = NULL; + struct mount *p_last_src = NULL; + struct mount *p_last_dest = NULL; - while (last_dest != dest->mnt_master) { + while (&last_dest->mnt != dest->mnt.mnt_master) { p_last_dest = last_dest; p_last_src = last_src; - last_dest = last_dest->mnt_master; - last_src = last_src->mnt_master; + last_dest = real_mount(last_dest->mnt.mnt_master); + last_src = real_mount(last_src->mnt.mnt_master); } if (p_last_dest) { do { p_last_dest = next_peer(p_last_dest); - } while (IS_MNT_NEW(p_last_dest)); + } while (IS_MNT_NEW(&p_last_dest->mnt)); /* is that a peer of the earlier? */ if (dest == p_last_dest) { *type = CL_MAKE_SHARED; @@ -200,7 +199,7 @@ static struct vfsmount *get_source(struct vfsmount *dest, /* slave of the earlier, then */ *type = CL_SLAVE; /* beginning of peer group among the slaves? */ - if (IS_MNT_SHARED(dest)) + if (IS_MNT_SHARED(&dest->mnt)) *type |= CL_MAKE_SHARED; return last_src; } @@ -221,32 +220,31 @@ static struct vfsmount *get_source(struct vfsmount *dest, int propagate_mnt(struct vfsmount *dest_mnt, struct dentry *dest_dentry, struct vfsmount *source_mnt, struct list_head *tree_list) { - struct vfsmount *m; - struct mount *child; + struct mount *m, *child; int ret = 0; - struct vfsmount *prev_dest_mnt = dest_mnt; - struct vfsmount *prev_src_mnt = source_mnt; + struct mount *prev_dest_mnt = real_mount(dest_mnt); + struct mount *prev_src_mnt = real_mount(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)) { + for (m = propagation_next(real_mount(dest_mnt), real_mount(dest_mnt)); m; + m = propagation_next(m, real_mount(dest_mnt))) { int type; - struct vfsmount *source; + struct mount *source; - if (IS_MNT_NEW(m)) + if (IS_MNT_NEW(&m->mnt)) continue; source = get_source(m, prev_dest_mnt, prev_src_mnt, &type); - if (!(child = copy_tree(real_mount(source), source->mnt_root, type))) { + if (!(child = copy_tree(source, source->mnt.mnt_root, type))) { ret = -ENOMEM; list_splice(tree_list, tmp_list.prev); goto out; } - if (is_subdir(dest_dentry, m->mnt_root)) { - mnt_set_mountpoint(m, dest_dentry, child); + if (is_subdir(dest_dentry, m->mnt.mnt_root)) { + mnt_set_mountpoint(&m->mnt, dest_dentry, child); list_add_tail(&child->mnt_hash, tree_list); } else { /* @@ -256,7 +254,7 @@ int propagate_mnt(struct vfsmount *dest_mnt, struct dentry *dest_dentry, list_add_tail(&child->mnt_hash, &tmp_list); } prev_dest_mnt = m; - prev_src_mnt = &child->mnt; + prev_src_mnt = child; } out: br_write_lock(vfsmount_lock); @@ -290,8 +288,7 @@ static inline int do_refcount_check(struct mount *mnt, int count) */ int propagate_mount_busy(struct mount *mnt, int refcnt) { - struct vfsmount *m; - struct mount *child; + struct mount *m, *child; struct mount *parent = mnt->mnt_parent; int ret = 0; @@ -306,9 +303,9 @@ int propagate_mount_busy(struct mount *mnt, int refcnt) if (!list_empty(&mnt->mnt_mounts) || do_refcount_check(mnt, refcnt)) return 1; - for (m = propagation_next(&parent->mnt, &parent->mnt); m; - m = propagation_next(m, &parent->mnt)) { - child = __lookup_mnt(m, mnt->mnt_mountpoint, 0); + for (m = propagation_next(parent, parent); m; + m = propagation_next(m, parent)) { + child = __lookup_mnt(&m->mnt, mnt->mnt_mountpoint, 0); if (child && list_empty(&child->mnt_mounts) && (ret = do_refcount_check(child, 1))) break; @@ -323,14 +320,14 @@ int propagate_mount_busy(struct mount *mnt, int refcnt) static void __propagate_umount(struct mount *mnt) { struct mount *parent = mnt->mnt_parent; - struct vfsmount *m; + struct mount *m; BUG_ON(parent == mnt); - for (m = propagation_next(&parent->mnt, &parent->mnt); m; - m = propagation_next(m, &parent->mnt)) { + for (m = propagation_next(parent, parent); m; + m = propagation_next(m, parent)) { - struct mount *child = __lookup_mnt(m, + struct mount *child = __lookup_mnt(&m->mnt, mnt->mnt_mountpoint, 0); /* * umount the child only if the child has no |
