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author | David Howells <dhowells@redhat.com> | 2011-01-14 19:04:05 (GMT) |
---|---|---|
committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-01-16 01:07:33 (GMT) |
commit | d18610b0ce9eb48c60649d8fcbf68374c84349d3 (patch) | |
tree | 58a4088b75a14a35e343b7ee6a4ba57d63792270 /fs/afs/mntpt.c | |
parent | 6f45b65672c8017d5e210e338bb5858a938ef445 (diff) | |
download | linux-fsl-qoriq-d18610b0ce9eb48c60649d8fcbf68374c84349d3.tar.xz |
AFS: Use d_automount() rather than abusing follow_link()
Make AFS use the new d_automount() dentry operation rather than abusing
follow_link() on directories.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/afs/mntpt.c')
-rw-r--r-- | fs/afs/mntpt.c | 44 |
1 files changed, 15 insertions, 29 deletions
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c index f3e891d..d23b2e3 100644 --- a/fs/afs/mntpt.c +++ b/fs/afs/mntpt.c @@ -24,7 +24,6 @@ static struct dentry *afs_mntpt_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd); static int afs_mntpt_open(struct inode *inode, struct file *file); -static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd); static void afs_mntpt_expiry_timed_out(struct work_struct *work); const struct file_operations afs_mntpt_file_operations = { @@ -34,13 +33,11 @@ const struct file_operations afs_mntpt_file_operations = { const struct inode_operations afs_mntpt_inode_operations = { .lookup = afs_mntpt_lookup, - .follow_link = afs_mntpt_follow_link, .readlink = page_readlink, .getattr = afs_getattr, }; const struct inode_operations afs_autocell_inode_operations = { - .follow_link = afs_mntpt_follow_link, .getattr = afs_getattr, }; @@ -88,6 +85,7 @@ int afs_mntpt_check_symlink(struct afs_vnode *vnode, struct key *key) _debug("symlink is a mountpoint"); spin_lock(&vnode->lock); set_bit(AFS_VNODE_MOUNTPOINT, &vnode->flags); + vnode->vfs_inode.i_flags |= S_AUTOMOUNT; spin_unlock(&vnode->lock); } @@ -238,49 +236,37 @@ error_no_devname: } /* - * follow a link from a mountpoint directory, thus causing it to be mounted + * handle an automount point */ -static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd) +struct vfsmount *afs_d_automount(struct path *path) { struct vfsmount *newmnt; int err; - _enter("%p{%s},{%s:%p{%s},}", - dentry, - dentry->d_name.name, - nd->path.mnt->mnt_devname, - dentry, - nd->path.dentry->d_name.name); - - dput(nd->path.dentry); - nd->path.dentry = dget(dentry); + _enter("{%s,%s}", path->mnt->mnt_devname, path->dentry->d_name.name); - newmnt = afs_mntpt_do_automount(nd->path.dentry); - if (IS_ERR(newmnt)) { - path_put(&nd->path); - return (void *)newmnt; - } + newmnt = afs_mntpt_do_automount(path->dentry); + if (IS_ERR(newmnt)) + return newmnt; mntget(newmnt); - err = do_add_mount(newmnt, &nd->path, MNT_SHRINKABLE, &afs_vfsmounts); + err = do_add_mount(newmnt, path, MNT_SHRINKABLE, &afs_vfsmounts); switch (err) { case 0: - path_put(&nd->path); - nd->path.mnt = newmnt; - nd->path.dentry = dget(newmnt->mnt_root); queue_delayed_work(afs_wq, &afs_mntpt_expiry_timer, afs_mntpt_expiry_timeout * HZ); - break; + _leave(" = %p {%s}", newmnt, newmnt->mnt_devname); + return newmnt; case -EBUSY: /* someone else made a mount here whilst we were busy */ - err = follow_down(&nd->path, false); + mntput(newmnt); + _leave(" = NULL [EBUSY]"); + return NULL; default: mntput(newmnt); - break; + _leave(" = %d", err); + return ERR_PTR(err); } - - _leave(" = %d", err); - return ERR_PTR(err); } /* |