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fs/namei.c: kill follow_mount()

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The only remaining caller (path_pts()) should be using follow_down()
anyway.  And clean path_pts() a bit.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2020-02-26 20:09:37 -05:00
parent 2aa3847085
commit 19f6028a01
1 changed files with 2 additions and 20 deletions
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22
fs/namei.c
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@ -1413,22 +1413,6 @@ static inline int handle_mounts(struct nameidata *nd, struct dentry *dentry,
return ret;
}
/*
* Skip to top of mountpoint pile in refwalk mode for follow_dotdot()
*/
static void follow_mount(struct path *path)
{
while (d_mountpoint(path->dentry)) {
struct vfsmount *mounted = lookup_mnt(path);
if (!mounted)
break;
dput(path->dentry);
mntput(path->mnt);
path->mnt = mounted;
path->dentry = dget(mounted->mnt_root);
}
}
/*
* This looks up the name in dcache and possibly revalidates the found dentry.
* NULL is returned if the dentry does not exist in the cache.
@ -2640,7 +2624,7 @@ int path_pts(struct path *path)
*/
struct dentry *parent = dget_parent(path->dentry);
struct dentry *child;
struct qstr this;
struct qstr this = QSTR_INIT("pts", 3);
if (unlikely(!path_connected(path->mnt, parent))) {
dput(parent);
@ -2648,15 +2632,13 @@ int path_pts(struct path *path)
}
dput(path->dentry);
path->dentry = parent;
this.name = "pts";
this.len = 3;
child = d_hash_and_lookup(parent, &this);
if (!child)
return -ENOENT;
path->dentry = child;
dput(parent);
follow_mount(path);
follow_down(path);
return 0;
}
#endif