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vfs: spread struct mount - umount_tree argument

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-11-24 21:07:43 -05:00
parent 1b8e5564b9
commit 761d5c38eb
3 changed files with 20 additions and 20 deletions
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36
fs/namespace.c
View File

@ -1217,12 +1217,12 @@ void release_mounts(struct list_head *head)
* vfsmount lock must be held for write
* namespace_sem must be held for write
*/
void umount_tree(struct vfsmount *mnt, int propagate, struct list_head *kill)
void umount_tree(struct mount *mnt, int propagate, struct list_head *kill)
{
LIST_HEAD(tmp_list);
struct mount *p;
for (p = real_mount(mnt); p; p = next_mnt(p, mnt))
for (p = mnt; p; p = next_mnt(p, &mnt->mnt))
list_move(&p->mnt_hash, &tmp_list);
if (propagate)
@ -1327,7 +1327,7 @@ static int do_umount(struct vfsmount *mnt, int flags)
retval = -EBUSY;
if (flags & MNT_DETACH || !propagate_mount_busy(mnt, 2)) {
if (!list_empty(&mnt->mnt_list))
umount_tree(mnt, 1, &umount_list);
umount_tree(real_mount(mnt), 1, &umount_list);
retval = 0;
}
br_write_unlock(vfsmount_lock);
@ -1455,7 +1455,7 @@ Enomem:
if (res) {
LIST_HEAD(umount_list);
br_write_lock(vfsmount_lock);
umount_tree(&res->mnt, 0, &umount_list);
umount_tree(res, 0, &umount_list);
br_write_unlock(vfsmount_lock);
release_mounts(&umount_list);
}
@ -1476,7 +1476,7 @@ void drop_collected_mounts(struct vfsmount *mnt)
LIST_HEAD(umount_list);
down_write(&namespace_sem);
br_write_lock(vfsmount_lock);
umount_tree(mnt, 0, &umount_list);
umount_tree(real_mount(mnt), 0, &umount_list);
br_write_unlock(vfsmount_lock);
up_write(&namespace_sem);
release_mounts(&umount_list);
@ -1773,7 +1773,7 @@ static int do_loopback(struct path *path, char *old_name,
err = graft_tree(&mnt->mnt, path);
if (err) {
br_write_lock(vfsmount_lock);
umount_tree(&mnt->mnt, 0, &umount_list);
umount_tree(mnt, 0, &umount_list);
br_write_unlock(vfsmount_lock);
}
out2:
@ -2080,7 +2080,7 @@ EXPORT_SYMBOL(mnt_set_expiry);
*/
void mark_mounts_for_expiry(struct list_head *mounts)
{
struct vfsmount *mnt, *next;
struct mount *mnt, *next;
LIST_HEAD(graveyard);
LIST_HEAD(umounts);
@ -2096,15 +2096,15 @@ 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_expire) {
if (!xchg(&mnt->mnt_expiry_mark, 1) ||
propagate_mount_busy(mnt, 1))
list_for_each_entry_safe(mnt, next, mounts, mnt.mnt_expire) {
if (!xchg(&mnt->mnt.mnt_expiry_mark, 1) ||
propagate_mount_busy(&mnt->mnt, 1))
continue;
list_move(&mnt->mnt_expire, &graveyard);
list_move(&mnt->mnt.mnt_expire, &graveyard);
}
while (!list_empty(&graveyard)) {
mnt = list_first_entry(&graveyard, struct vfsmount, mnt_expire);
touch_mnt_namespace(mnt->mnt_ns);
mnt = list_first_entry(&graveyard, struct mount, mnt.mnt_expire);
touch_mnt_namespace(mnt->mnt.mnt_ns);
umount_tree(mnt, 1, &umounts);
}
br_write_unlock(vfsmount_lock);
@ -2170,14 +2170,14 @@ resume:
static void shrink_submounts(struct vfsmount *mnt, struct list_head *umounts)
{
LIST_HEAD(graveyard);
struct vfsmount *m;
struct mount *m;
/* extract submounts of 'mountpoint' from the expiration list */
while (select_submounts(mnt, &graveyard)) {
while (!list_empty(&graveyard)) {
m = list_first_entry(&graveyard, struct vfsmount,
mnt_expire);
touch_mnt_namespace(m->mnt_ns);
m = list_first_entry(&graveyard, struct mount,
mnt.mnt_expire);
touch_mnt_namespace(m->mnt.mnt_ns);
umount_tree(m, 1, umounts);
}
}
@ -2750,7 +2750,7 @@ void put_mnt_ns(struct mnt_namespace *ns)
return;
down_write(&namespace_sem);
br_write_lock(vfsmount_lock);
umount_tree(ns->root, 0, &umount_list);
umount_tree(real_mount(ns->root), 0, &umount_list);
br_write_unlock(vfsmount_lock);
up_write(&namespace_sem);
release_mounts(&umount_list);

2
fs/pnode.c
View File

@ -262,7 +262,7 @@ out:
br_write_lock(vfsmount_lock);
while (!list_empty(&tmp_list)) {
child = list_first_entry(&tmp_list, struct mount, mnt_hash);
umount_tree(&child->mnt, 0, &umount_list);
umount_tree(child, 0, &umount_list);
}
br_write_unlock(vfsmount_lock);
release_mounts(&umount_list);

2
fs/pnode.h
View File

@ -40,7 +40,7 @@ unsigned int mnt_get_count(struct vfsmount *mnt);
void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
struct vfsmount *);
void release_mounts(struct list_head *);
void umount_tree(struct vfsmount *, int, struct list_head *);
void umount_tree(struct mount *, int, struct list_head *);
struct mount *copy_tree(struct vfsmount *, struct dentry *, int);
bool is_path_reachable(struct vfsmount *, struct dentry *,
const struct path *root);