Commit fc7be130 authored by Al Viro's avatar Al Viro
Browse files

vfs: switch pnode.h macros to struct mount * 



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 863d684f

fs/namespace.c

+21 −21
Original line number Diff line number Diff line
@@ -716,9 +716,9 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root, 
		if (flag & CL_SLAVE) {

			list_add(&mnt->mnt_slave, &old->mnt_slave_list);

			mnt->mnt_master = old;

			CLEAR_MNT_SHARED(&mnt->mnt);

			CLEAR_MNT_SHARED(mnt);

		} else if (!(flag & CL_PRIVATE)) {

			if ((flag & CL_MAKE_SHARED) || IS_MNT_SHARED(&old->mnt))

			if ((flag & CL_MAKE_SHARED) || IS_MNT_SHARED(old))

				list_add(&mnt->mnt_share, &old->mnt_share);

			if (IS_MNT_SLAVE(old))

				list_add(&mnt->mnt_slave, &old->mnt_slave);
@@ -1050,7 +1050,7 @@ static int show_mountinfo(struct seq_file *m, void *v) 
	show_mnt_opts(m, mnt);



	/* Tagged fields ("foo:X" or "bar") */

	if (IS_MNT_SHARED(mnt))

	if (IS_MNT_SHARED(r))

		seq_printf(m, " shared:%i", r->mnt_group_id);

	if (IS_MNT_SLAVE(r)) {

		int master = r->mnt_master->mnt_group_id;
@@ -1059,7 +1059,7 @@ static int show_mountinfo(struct seq_file *m, void *v) 
		if (dom && dom != master)

			seq_printf(m, " propagate_from:%i", dom);

	}

	if (IS_MNT_UNBINDABLE(mnt))

	if (IS_MNT_UNBINDABLE(r))

		seq_puts(m, " unbindable");



	/* Filesystem specific data */
@@ -1421,7 +1421,7 @@ struct mount *copy_tree(struct mount *mnt, struct dentry *dentry, 
	struct mount *res, *p, *q, *r;

	struct path path;



	if (!(flag & CL_COPY_ALL) && IS_MNT_UNBINDABLE(&mnt->mnt))

	if (!(flag & CL_COPY_ALL) && IS_MNT_UNBINDABLE(mnt))

		return NULL;



	res = q = clone_mnt(mnt, dentry, flag);
@@ -1436,7 +1436,7 @@ struct mount *copy_tree(struct mount *mnt, struct dentry *dentry, 
			continue;



		for (s = r; s; s = next_mnt(s, &r->mnt)) {

			if (!(flag & CL_COPY_ALL) && IS_MNT_UNBINDABLE(&s->mnt)) {

			if (!(flag & CL_COPY_ALL) && IS_MNT_UNBINDABLE(s)) {

				s = skip_mnt_tree(s);

				continue;

			}
@@ -1509,7 +1509,7 @@ static void cleanup_group_ids(struct mount *mnt, struct mount *end) 
	struct mount *p;



	for (p = mnt; p != end; p = next_mnt(p, &mnt->mnt)) {

		if (p->mnt_group_id && !IS_MNT_SHARED(&p->mnt))

		if (p->mnt_group_id && !IS_MNT_SHARED(p))

			mnt_release_group_id(p);

	}

}
@@ -1519,7 +1519,7 @@ static int invent_group_ids(struct mount *mnt, bool recurse) 
	struct mount *p;



	for (p = mnt; p; p = recurse ? next_mnt(p, &mnt->mnt) : NULL) {

		if (!p->mnt_group_id && !IS_MNT_SHARED(&p->mnt)) {

		if (!p->mnt_group_id && !IS_MNT_SHARED(p)) {

			int err = mnt_alloc_group_id(p);

			if (err) {

				cleanup_group_ids(mnt, p);
@@ -1603,7 +1603,7 @@ static int attach_recursive_mnt(struct mount *source_mnt, 
	struct mount *child, *p;

	int err;



	if (IS_MNT_SHARED(&dest_mnt->mnt)) {

	if (IS_MNT_SHARED(dest_mnt)) {

		err = invent_group_ids(source_mnt, true);

		if (err)

			goto out;
@@ -1614,7 +1614,7 @@ static int attach_recursive_mnt(struct mount *source_mnt, 


	br_write_lock(vfsmount_lock);



	if (IS_MNT_SHARED(&dest_mnt->mnt)) {

	if (IS_MNT_SHARED(dest_mnt)) {

		for (p = source_mnt; p; p = next_mnt(p, &source_mnt->mnt))

			set_mnt_shared(p);

	}
@@ -1636,7 +1636,7 @@ static int attach_recursive_mnt(struct mount *source_mnt, 
	return 0;



 out_cleanup_ids:

	if (IS_MNT_SHARED(&dest_mnt->mnt))

	if (IS_MNT_SHARED(dest_mnt))

		cleanup_group_ids(source_mnt, NULL);

 out:

	return err;
@@ -1764,7 +1764,7 @@ static int do_loopback(struct path *path, char *old_name, 
	old = real_mount(old_path.mnt);



	err = -EINVAL;

	if (IS_MNT_UNBINDABLE(old_path.mnt))

	if (IS_MNT_UNBINDABLE(old))

		goto out2;



	if (!check_mnt(real_mount(path->mnt)) || !check_mnt(old))
@@ -1859,7 +1859,7 @@ static inline int tree_contains_unbindable(struct mount *mnt) 
{

	struct mount *p;

	for (p = mnt; p; p = next_mnt(p, &mnt->mnt)) {

		if (IS_MNT_UNBINDABLE(&p->mnt))

		if (IS_MNT_UNBINDABLE(p))

			return 1;

	}

	return 0;
@@ -1884,9 +1884,10 @@ static int do_move_mount(struct path *path, char *old_name) 
		goto out;



	old = real_mount(old_path.mnt);

	p = real_mount(path->mnt);



	err = -EINVAL;

	if (!check_mnt(real_mount(path->mnt)) || !check_mnt(old))

	if (!check_mnt(p) || !check_mnt(old))

		goto out1;



	if (d_unlinked(path->dentry))
@@ -1905,17 +1906,16 @@ static int do_move_mount(struct path *path, char *old_name) 
	/*

	 * Don't move a mount residing in a shared parent.

	 */

	if (IS_MNT_SHARED(&old->mnt_parent->mnt))

	if (IS_MNT_SHARED(old->mnt_parent))

		goto out1;

	/*

	 * Don't move a mount tree containing unbindable mounts to a destination

	 * mount which is shared.

	 */

	if (IS_MNT_SHARED(path->mnt) &&

	    tree_contains_unbindable(old))

	if (IS_MNT_SHARED(p) && tree_contains_unbindable(old))

		goto out1;

	err = -ELOOP;

	for (p = real_mount(path->mnt); mnt_has_parent(p); p = p->mnt_parent)

	for (; mnt_has_parent(p); p = p->mnt_parent)

		if (p == old)

			goto out1;
@@ -2643,9 +2643,9 @@ SYSCALL_DEFINE2(pivot_root, const char __user *, new_root, 
	error = -EINVAL;

	new_mnt = real_mount(new.mnt);

	root_mnt = real_mount(root.mnt);

	if (IS_MNT_SHARED(old.mnt) ||

		IS_MNT_SHARED(&new_mnt->mnt_parent->mnt) ||

		IS_MNT_SHARED(&root_mnt->mnt_parent->mnt))

	if (IS_MNT_SHARED(real_mount(old.mnt)) ||

		IS_MNT_SHARED(new_mnt->mnt_parent) ||

		IS_MNT_SHARED(root_mnt->mnt_parent))

		goto out4;

	if (!check_mnt(root_mnt) || !check_mnt(new_mnt))

		goto out4;

fs/pnode.c

+3 −3
Original line number Diff line number Diff line
@@ -82,7 +82,7 @@ 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_share))

	if (IS_MNT_SHARED(mnt) && list_empty(&mnt->mnt_share))

		mnt_release_group_id(mnt);



	list_del_init(&mnt->mnt_share);
@@ -107,7 +107,7 @@ static int do_make_slave(struct mount *mnt) 
		}

	}

	mnt->mnt_master = master;

	CLEAR_MNT_SHARED(&mnt->mnt);

	CLEAR_MNT_SHARED(mnt);

	return 0;

}
@@ -199,7 +199,7 @@ static struct mount *get_source(struct mount *dest, 
	/* slave of the earlier, then */

	*type = CL_SLAVE;

	/* beginning of peer group among the slaves? */

	if (IS_MNT_SHARED(&dest->mnt))

	if (IS_MNT_SHARED(dest))

		*type |= CL_MAKE_SHARED;

	return last_src;

}

fs/pnode.h

+5 −5
Original line number Diff line number Diff line
@@ -11,11 +11,11 @@ 
#include <linux/list.h>

#include "mount.h"



#define IS_MNT_SHARED(mnt) ((mnt)->mnt_flags & MNT_SHARED)

#define IS_MNT_SLAVE(mnt) ((mnt)->mnt_master)

#define IS_MNT_NEW(mnt)  (!(mnt)->mnt_ns)

#define CLEAR_MNT_SHARED(mnt) ((mnt)->mnt_flags &= ~MNT_SHARED)

#define IS_MNT_UNBINDABLE(mnt) ((mnt)->mnt_flags & MNT_UNBINDABLE)

#define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED)

#define IS_MNT_SLAVE(m) ((m)->mnt_master)

#define IS_MNT_NEW(m)  (!(m)->mnt_ns)

#define CLEAR_MNT_SHARED(m) ((m)->mnt.mnt_flags &= ~MNT_SHARED)

#define IS_MNT_UNBINDABLE(m) ((m)->mnt.mnt_flags & MNT_UNBINDABLE)



#define CL_EXPIRE    		0x01

#define CL_SLAVE     		0x02

CRA Git | Maintained and supported by SUSTech CRA and CCSE