vfs: the first spoils - mnt_hash moved
Al Viro [Fri, 25 Nov 2011 02:01:32 +0000 (21:01 -0500)]
taken out of struct vfsmount into struct mount

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/mount.h
fs/namespace.c
fs/pnode.c
include/linux/mount.h

index 44e5b6f..831e7c8 100644 (file)
@@ -1,6 +1,7 @@
 #include <linux/mount.h>
 
 struct mount {
+       struct list_head mnt_hash;
        struct vfsmount mnt;
 };
 
index 7641234..121e003 100644 (file)
@@ -199,7 +199,7 @@ static struct mount *alloc_vfsmnt(const char *name)
                mnt->mnt_writers = 0;
 #endif
 
-               INIT_LIST_HEAD(&p->mnt.mnt_hash);
+               INIT_LIST_HEAD(&p->mnt_hash);
                INIT_LIST_HEAD(&mnt->mnt_child);
                INIT_LIST_HEAD(&mnt->mnt_mounts);
                INIT_LIST_HEAD(&mnt->mnt_list);
@@ -475,7 +475,7 @@ struct mount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry,
                p = NULL;
                if (tmp == head)
                        break;
-               p = list_entry(tmp, struct mount, mnt.mnt_hash);
+               p = list_entry(tmp, struct mount, mnt_hash);
                if (p->mnt.mnt_parent == mnt && p->mnt.mnt_mountpoint == dentry) {
                        found = p;
                        break;
@@ -542,7 +542,7 @@ static void dentry_reset_mounted(struct dentry *dentry)
        for (u = 0; u < HASH_SIZE; u++) {
                struct mount *p;
 
-               list_for_each_entry(p, &mount_hashtable[u], mnt.mnt_hash) {
+               list_for_each_entry(p, &mount_hashtable[u], mnt_hash) {
                        if (p->mnt.mnt_mountpoint == dentry)
                                return;
                }
@@ -562,7 +562,7 @@ static void detach_mnt(struct mount *mnt, struct path *old_path)
        mnt->mnt.mnt_parent = &mnt->mnt;
        mnt->mnt.mnt_mountpoint = mnt->mnt.mnt_root;
        list_del_init(&mnt->mnt.mnt_child);
-       list_del_init(&mnt->mnt.mnt_hash);
+       list_del_init(&mnt->mnt_hash);
        dentry_reset_mounted(old_path->dentry);
 }
 
@@ -585,7 +585,7 @@ void mnt_set_mountpoint(struct vfsmount *mnt, struct dentry *dentry,
 static void attach_mnt(struct mount *mnt, struct path *path)
 {
        mnt_set_mountpoint(path->mnt, path->dentry, &mnt->mnt);
-       list_add_tail(&mnt->mnt.mnt_hash, mount_hashtable +
+       list_add_tail(&mnt->mnt_hash, mount_hashtable +
                        hash(path->mnt, path->dentry));
        list_add_tail(&mnt->mnt.mnt_child, &path->mnt->mnt_mounts);
 }
@@ -625,7 +625,7 @@ static void commit_tree(struct mount *mnt)
 
        list_splice(&head, n->list.prev);
 
-       list_add_tail(&mnt->mnt.mnt_hash, mount_hashtable +
+       list_add_tail(&mnt->mnt_hash, mount_hashtable +
                                hash(parent, mnt->mnt.mnt_mountpoint));
        list_add_tail(&mnt->mnt.mnt_child, &parent->mnt_mounts);
        touch_mnt_namespace(n);
@@ -1193,8 +1193,8 @@ void release_mounts(struct list_head *head)
 {
        struct mount *mnt;
        while (!list_empty(head)) {
-               mnt = list_first_entry(head, struct mount, mnt.mnt_hash);
-               list_del_init(&mnt->mnt.mnt_hash);
+               mnt = list_first_entry(head, struct mount, mnt_hash);
+               list_del_init(&mnt->mnt_hash);
                if (mnt_has_parent(&mnt->mnt)) {
                        struct dentry *dentry;
                        struct vfsmount *m;
@@ -1223,12 +1223,12 @@ void umount_tree(struct vfsmount *mnt, int propagate, struct list_head *kill)
        struct mount *p;
 
        for (p = real_mount(mnt); p; p = next_mnt(p, mnt))
-               list_move(&p->mnt.mnt_hash, &tmp_list);
+               list_move(&p->mnt_hash, &tmp_list);
 
        if (propagate)
                propagate_umount(&tmp_list);
 
-       list_for_each_entry(p, &tmp_list, mnt.mnt_hash) {
+       list_for_each_entry(p, &tmp_list, mnt_hash) {
                list_del_init(&p->mnt.mnt_expire);
                list_del_init(&p->mnt.mnt_list);
                __touch_mnt_namespace(p->mnt.mnt_ns);
@@ -1620,8 +1620,8 @@ static int attach_recursive_mnt(struct mount *source_mnt,
                commit_tree(source_mnt);
        }
 
-       list_for_each_entry_safe(child, p, &tree_list, mnt.mnt_hash) {
-               list_del_init(&child->mnt.mnt_hash);
+       list_for_each_entry_safe(child, p, &tree_list, mnt_hash) {
+               list_del_init(&child->mnt_hash);
                commit_tree(child);
        }
        br_write_unlock(vfsmount_lock);
index 916c8e8..a2f0f3e 100644 (file)
@@ -247,13 +247,13 @@ int propagate_mnt(struct vfsmount *dest_mnt, struct dentry *dest_dentry,
 
                if (is_subdir(dest_dentry, m->mnt_root)) {
                        mnt_set_mountpoint(m, dest_dentry, &child->mnt);
-                       list_add_tail(&child->mnt.mnt_hash, tree_list);
+                       list_add_tail(&child->mnt_hash, tree_list);
                } else {
                        /*
                         * This can happen if the parent mount was bind mounted
                         * on some subdirectory of a shared/slave mount.
                         */
-                       list_add_tail(&child->mnt.mnt_hash, &tmp_list);
+                       list_add_tail(&child->mnt_hash, &tmp_list);
                }
                prev_dest_mnt = m;
                prev_src_mnt  = &child->mnt;
@@ -261,7 +261,7 @@ int propagate_mnt(struct vfsmount *dest_mnt, struct dentry *dest_dentry,
 out:
        br_write_lock(vfsmount_lock);
        while (!list_empty(&tmp_list)) {
-               child = list_first_entry(&tmp_list, struct mount, mnt.mnt_hash);
+               child = list_first_entry(&tmp_list, struct mount, mnt_hash);
                umount_tree(&child->mnt, 0, &umount_list);
        }
        br_write_unlock(vfsmount_lock);
@@ -337,7 +337,7 @@ static void __propagate_umount(struct mount *mnt)
                 * other children
                 */
                if (child && list_empty(&child->mnt.mnt_mounts))
-                       list_move_tail(&child->mnt.mnt_hash, &mnt->mnt.mnt_hash);
+                       list_move_tail(&child->mnt_hash, &mnt->mnt_hash);
        }
 }
 
@@ -352,7 +352,7 @@ int propagate_umount(struct list_head *list)
 {
        struct mount *mnt;
 
-       list_for_each_entry(mnt, list, mnt.mnt_hash)
+       list_for_each_entry(mnt, list, mnt_hash)
                __propagate_umount(mnt);
        return 0;
 }
index 00f5c4f..77c913d 100644 (file)
@@ -53,7 +53,6 @@ struct mnt_pcp {
 };
 
 struct vfsmount {
-       struct list_head mnt_hash;
        struct vfsmount *mnt_parent;    /* fs we are mounted on */
        struct dentry *mnt_mountpoint;  /* dentry of mountpoint */
        struct dentry *mnt_root;        /* root of the mounted tree */