diff options
| -rw-r--r-- | fs/mount.h | 6 | ||||
| -rw-r--r-- | fs/namespace.c | 41 | ||||
| -rw-r--r-- | fs/pnode.c | 30 | ||||
| -rw-r--r-- | include/linux/mount.h | 4 |
4 files changed, 41 insertions, 40 deletions
diff --git a/fs/mount.h b/fs/mount.h index d4db4c7e181..eb62ad232e4 100644 --- a/fs/mount.h +++ b/fs/mount.h @@ -19,7 +19,11 @@ struct mount { #endif struct list_head mnt_mounts; /* list of children, anchored here */ struct list_head mnt_child; /* and going through their mnt_child */ - /* yet to be moved - up to mnt_slave */ + /* yet to be moved - up to mnt_list */ + struct list_head mnt_expire; /* link in fs-specific expiry list */ + struct list_head mnt_share; /* circular list of shared mounts */ + struct list_head mnt_slave_list;/* list of slave mounts */ + struct list_head mnt_slave; /* slave list entry */ struct mount *mnt_master; /* slave is on master->mnt_slave_list */ }; diff --git a/fs/namespace.c b/fs/namespace.c index 847b7240c51..a14750be7a7 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -203,10 +203,10 @@ static struct mount *alloc_vfsmnt(const char *name) INIT_LIST_HEAD(&p->mnt_child); INIT_LIST_HEAD(&p->mnt_mounts); INIT_LIST_HEAD(&mnt->mnt_list); - INIT_LIST_HEAD(&mnt->mnt_expire); - INIT_LIST_HEAD(&mnt->mnt_share); - INIT_LIST_HEAD(&mnt->mnt_slave_list); - INIT_LIST_HEAD(&mnt->mnt_slave); + INIT_LIST_HEAD(&p->mnt_expire); + INIT_LIST_HEAD(&p->mnt_share); + INIT_LIST_HEAD(&p->mnt_slave_list); + INIT_LIST_HEAD(&p->mnt_slave); #ifdef CONFIG_FSNOTIFY INIT_HLIST_HEAD(&mnt->mnt_fsnotify_marks); #endif @@ -714,14 +714,14 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root, mnt->mnt_parent = mnt; if (flag & CL_SLAVE) { - list_add(&mnt->mnt.mnt_slave, &old->mnt.mnt_slave_list); + list_add(&mnt->mnt_slave, &old->mnt_slave_list); mnt->mnt_master = old; CLEAR_MNT_SHARED(&mnt->mnt); } else if (!(flag & CL_PRIVATE)) { if ((flag & CL_MAKE_SHARED) || IS_MNT_SHARED(&old->mnt)) - list_add(&mnt->mnt.mnt_share, &old->mnt.mnt_share); + list_add(&mnt->mnt_share, &old->mnt_share); if (IS_MNT_SLAVE(old)) - list_add(&mnt->mnt.mnt_slave, &old->mnt.mnt_slave); + list_add(&mnt->mnt_slave, &old->mnt_slave); mnt->mnt_master = old->mnt_master; } if (flag & CL_MAKE_SHARED) @@ -730,8 +730,8 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root, /* stick the duplicate mount on the same expiry list * as the original if that was on one */ if (flag & CL_EXPIRE) { - if (!list_empty(&old->mnt.mnt_expire)) - list_add(&mnt->mnt.mnt_expire, &old->mnt.mnt_expire); + if (!list_empty(&old->mnt_expire)) + list_add(&mnt->mnt_expire, &old->mnt_expire); } } return mnt; @@ -1233,7 +1233,7 @@ void umount_tree(struct mount *mnt, int propagate, struct list_head *kill) propagate_umount(&tmp_list); list_for_each_entry(p, &tmp_list, mnt_hash) { - list_del_init(&p->mnt.mnt_expire); + list_del_init(&p->mnt_expire); list_del_init(&p->mnt.mnt_list); __touch_mnt_namespace(p->mnt.mnt_ns); p->mnt.mnt_ns = NULL; @@ -1921,7 +1921,7 @@ static int do_move_mount(struct path *path, char *old_name) /* if the mount is moved, it should no longer be expire * automatically */ - list_del_init(&old_path.mnt->mnt_expire); + list_del_init(&old->mnt_expire); out1: unlock_mount(path); out: @@ -2033,11 +2033,12 @@ static int do_new_mount(struct path *path, char *type, int flags, int finish_automount(struct vfsmount *m, struct path *path) { + struct mount *mnt = real_mount(m); int err; /* The new mount record should have at least 2 refs to prevent it being * expired before we get a chance to add it */ - BUG_ON(mnt_get_count(real_mount(m)) < 2); + BUG_ON(mnt_get_count(mnt) < 2); if (m->mnt_sb == path->mnt->mnt_sb && m->mnt_root == path->dentry) { @@ -2050,10 +2051,10 @@ int finish_automount(struct vfsmount *m, struct path *path) return 0; fail: /* remove m from any expiration list it may be on */ - if (!list_empty(&m->mnt_expire)) { + if (!list_empty(&mnt->mnt_expire)) { down_write(&namespace_sem); br_write_lock(vfsmount_lock); - list_del_init(&m->mnt_expire); + list_del_init(&mnt->mnt_expire); br_write_unlock(vfsmount_lock); up_write(&namespace_sem); } @@ -2072,7 +2073,7 @@ void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list) down_write(&namespace_sem); br_write_lock(vfsmount_lock); - list_add_tail(&mnt->mnt_expire, expiry_list); + list_add_tail(&real_mount(mnt)->mnt_expire, expiry_list); br_write_unlock(vfsmount_lock); up_write(&namespace_sem); @@ -2102,14 +2103,14 @@ void mark_mounts_for_expiry(struct list_head *mounts) * - still marked for expiry (marked on the last call here; marks are * cleared by mntput()) */ - list_for_each_entry_safe(mnt, next, mounts, mnt.mnt_expire) { + list_for_each_entry_safe(mnt, next, mounts, mnt_expire) { if (!xchg(&mnt->mnt.mnt_expiry_mark, 1) || propagate_mount_busy(mnt, 1)) continue; - list_move(&mnt->mnt.mnt_expire, &graveyard); + list_move(&mnt->mnt_expire, &graveyard); } while (!list_empty(&graveyard)) { - mnt = list_first_entry(&graveyard, struct mount, mnt.mnt_expire); + mnt = list_first_entry(&graveyard, struct mount, mnt_expire); touch_mnt_namespace(mnt->mnt.mnt_ns); umount_tree(mnt, 1, &umounts); } @@ -2152,7 +2153,7 @@ resume: } if (!propagate_mount_busy(mnt, 1)) { - list_move_tail(&mnt->mnt.mnt_expire, graveyard); + list_move_tail(&mnt->mnt_expire, graveyard); found++; } } @@ -2182,7 +2183,7 @@ static void shrink_submounts(struct mount *mnt, struct list_head *umounts) while (select_submounts(mnt, &graveyard)) { while (!list_empty(&graveyard)) { m = list_first_entry(&graveyard, struct mount, - mnt.mnt_expire); + mnt_expire); touch_mnt_namespace(m->mnt.mnt_ns); umount_tree(m, 1, umounts); } diff --git a/fs/pnode.c b/fs/pnode.c index 9bf22b61f8f..12cc1518e0c 100644 --- a/fs/pnode.c +++ b/fs/pnode.c @@ -15,17 +15,17 @@ /* return the next shared peer mount of @p */ static inline struct mount *next_peer(struct mount *p) { - return list_entry(p->mnt.mnt_share.next, struct mount, mnt.mnt_share); + return list_entry(p->mnt_share.next, struct mount, mnt_share); } static inline struct mount *first_slave(struct mount *p) { - return list_entry(p->mnt.mnt_slave_list.next, struct mount, mnt.mnt_slave); + return list_entry(p->mnt_slave_list.next, struct mount, mnt_slave); } static inline struct mount *next_slave(struct mount *p) { - return list_entry(p->mnt.mnt_slave.next, struct mount, mnt.mnt_slave); + return list_entry(p->mnt_slave.next, struct mount, mnt_slave); } static struct mount *get_peer_under_root(struct mount *mnt, @@ -82,27 +82,27 @@ static int do_make_slave(struct mount *mnt) if (peer_mnt == mnt) peer_mnt = NULL; } - if (IS_MNT_SHARED(&mnt->mnt) && list_empty(&mnt->mnt.mnt_share)) + if (IS_MNT_SHARED(&mnt->mnt) && list_empty(&mnt->mnt_share)) mnt_release_group_id(mnt); - list_del_init(&mnt->mnt.mnt_share); + list_del_init(&mnt->mnt_share); mnt->mnt.mnt_group_id = 0; if (peer_mnt) master = peer_mnt; if (master) { - list_for_each_entry(slave_mnt, &mnt->mnt.mnt_slave_list, mnt.mnt_slave) + list_for_each_entry(slave_mnt, &mnt->mnt_slave_list, mnt_slave) slave_mnt->mnt_master = master; - list_move(&mnt->mnt.mnt_slave, &master->mnt.mnt_slave_list); - list_splice(&mnt->mnt.mnt_slave_list, master->mnt.mnt_slave_list.prev); - INIT_LIST_HEAD(&mnt->mnt.mnt_slave_list); + list_move(&mnt->mnt_slave, &master->mnt_slave_list); + list_splice(&mnt->mnt_slave_list, master->mnt_slave_list.prev); + INIT_LIST_HEAD(&mnt->mnt_slave_list); } else { - struct list_head *p = &mnt->mnt.mnt_slave_list; + struct list_head *p = &mnt->mnt_slave_list; while (!list_empty(p)) { slave_mnt = list_first_entry(p, - struct mount, mnt.mnt_slave); - list_del_init(&slave_mnt->mnt.mnt_slave); + struct mount, mnt_slave); + list_del_init(&slave_mnt->mnt_slave); slave_mnt->mnt_master = NULL; } } @@ -122,7 +122,7 @@ void change_mnt_propagation(struct mount *mnt, int type) } do_make_slave(mnt); if (type != MS_SLAVE) { - list_del_init(&mnt->mnt.mnt_slave); + list_del_init(&mnt->mnt_slave); mnt->mnt_master = NULL; if (type == MS_UNBINDABLE) mnt->mnt.mnt_flags |= MNT_UNBINDABLE; @@ -145,7 +145,7 @@ static struct mount *propagation_next(struct mount *m, struct mount *origin) { /* are there any slaves of this mount? */ - if (!IS_MNT_NEW(&m->mnt) && !list_empty(&m->mnt.mnt_slave_list)) + if (!IS_MNT_NEW(&m->mnt) && !list_empty(&m->mnt_slave_list)) return first_slave(m); while (1) { @@ -154,7 +154,7 @@ static struct mount *propagation_next(struct mount *m, if (master == origin->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) + } else if (m->mnt_slave.next != &master->mnt_slave_list) return next_slave(m); /* back at master */ diff --git a/include/linux/mount.h b/include/linux/mount.h index 2d5beb5e3a8..2f5f3ae3bd2 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -58,10 +58,6 @@ struct vfsmount { #endif const char *mnt_devname; /* Name of device e.g. /dev/dsk/hda1 */ struct list_head mnt_list; - struct list_head mnt_expire; /* link in fs-specific expiry list */ - struct list_head mnt_share; /* circular list of shared mounts */ - struct list_head mnt_slave_list;/* list of slave mounts */ - struct list_head mnt_slave; /* slave list entry */ struct mnt_namespace *mnt_ns; /* containing namespace */ int mnt_id; /* mount identifier */ int mnt_group_id; /* peer group identifier */ |