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vfs: now it can be done - make mnt_parent point to struct mount

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-11-24 22:19:58 -05:00
parent 3376f34fff
commit 0714a53380
5 changed files with 53 additions and 50 deletions
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16
fs/pnode.c
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@ -292,10 +292,10 @@ int propagate_mount_busy(struct mount *mnt, int refcnt)
{
struct vfsmount *m;
struct mount *child;
struct vfsmount *parent = mnt->mnt_parent;
struct mount *parent = mnt->mnt_parent;
int ret = 0;
if (&mnt->mnt == parent)
if (mnt == parent)
return do_refcount_check(mnt, refcnt);
/*
@ -306,8 +306,8 @@ int propagate_mount_busy(struct mount *mnt, int refcnt)
if (!list_empty(&mnt->mnt.mnt_mounts) || do_refcount_check(mnt, refcnt))
return 1;
for (m = propagation_next(parent, parent); m;
m = propagation_next(m, parent)) {
for (m = propagation_next(&parent->mnt, &parent->mnt); m;
m = propagation_next(m, &parent->mnt)) {
child = __lookup_mnt(m, mnt->mnt.mnt_mountpoint, 0);
if (child && list_empty(&child->mnt.mnt_mounts) &&
(ret = do_refcount_check(child, 1)))
@ -322,13 +322,13 @@ int propagate_mount_busy(struct mount *mnt, int refcnt)
*/
static void __propagate_umount(struct mount *mnt)
{
struct vfsmount *parent = mnt->mnt_parent;
struct mount *parent = mnt->mnt_parent;
struct vfsmount *m;
BUG_ON(parent == &mnt->mnt);
BUG_ON(parent == mnt);
for (m = propagation_next(parent, parent); m;
m = propagation_next(m, parent)) {
for (m = propagation_next(&parent->mnt, &parent->mnt); m;
m = propagation_next(m, &parent->mnt)) {
struct mount *child = __lookup_mnt(m,
mnt->mnt.mnt_mountpoint, 0);