fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / fs / afs / mntpt.c

diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 3a36a3c..8f74e84 100644 (file)
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -18,7 +18,7 @@
 #include <linux/pagemap.h>
 #include <linux/mount.h>
 #include <linux/namei.h>
-#include <linux/namespace.h>
+#include <linux/mnt_namespace.h>
 #include "super.h"
 #include "cell.h"
 #include "volume.h"
@@ -30,25 +30,19 @@ 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);
 
-#ifdef AFS_AUTOMOUNT_SUPPORT
-static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd);
-#endif
-
-struct file_operations afs_mntpt_file_operations = {
+const struct file_operations afs_mntpt_file_operations = {
        .open           = afs_mntpt_open,
 };
 
 struct inode_operations afs_mntpt_inode_operations = {
        .lookup         = afs_mntpt_lookup,
-#ifdef AFS_AUTOMOUNT_SUPPORT
        .follow_link    = afs_mntpt_follow_link,
-#endif
        .readlink       = page_readlink,
        .getattr        = afs_inode_getattr,
 };
 
-#ifdef AFS_AUTOMOUNT_SUPPORT
 static LIST_HEAD(afs_vfsmounts);
 
 static void afs_mntpt_expiry_timed_out(struct afs_timer *timer);
@@ -60,7 +54,6 @@ struct afs_timer_ops afs_mntpt_expiry_timer_ops = {
 struct afs_timer afs_mntpt_expiry_timer;
 
 unsigned long afs_mntpt_expiry_timeout = 20;
-#endif
 
 /*****************************************************************************/
 /*
@@ -70,7 +63,6 @@ unsigned long afs_mntpt_expiry_timeout = 20;
 int afs_mntpt_check_symlink(struct afs_vnode *vnode)
 {
        struct page *page;
-       filler_t *filler;
        size_t size;
        char *buf;
        int ret;
@@ -78,10 +70,7 @@ int afs_mntpt_check_symlink(struct afs_vnode *vnode)
        _enter("{%u,%u}", vnode->fid.vnode, vnode->fid.unique);
 
        /* read the contents of the symlink into the pagecache */
-       filler = (filler_t *) AFS_VNODE_TO_I(vnode)->i_mapping->a_ops->readpage;
-
-       page = read_cache_page(AFS_VNODE_TO_I(vnode)->i_mapping, 0,
-                              filler, NULL);
+       page = read_mapping_page(AFS_VNODE_TO_I(vnode)->i_mapping, 0, NULL);
        if (IS_ERR(page)) {
                ret = PTR_ERR(page);
                goto out;
@@ -147,16 +136,15 @@ static int afs_mntpt_open(struct inode *inode, struct file *file)
 {
        kenter("%p,%p{%p{%s},%s}",
               inode, file,
-              file->f_dentry->d_parent,
-              file->f_dentry->d_parent ?
-              file->f_dentry->d_parent->d_name.name :
+              file->f_path.dentry->d_parent,
+              file->f_path.dentry->d_parent ?
+              file->f_path.dentry->d_parent->d_name.name :
               (const unsigned char *) "",
-              file->f_dentry->d_name.name);
+              file->f_path.dentry->d_name.name);
 
        return -EREMOTE;
 } /* end afs_mntpt_open() */
 
-#ifdef AFS_AUTOMOUNT_SUPPORT
 /*****************************************************************************/
 /*
  * create a vfsmount to be automounted
@@ -189,9 +177,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
                goto error;
 
        /* read the contents of the AFS special symlink */
-       filler_t *filler = mntpt->d_inode->i_mapping->a_ops->readpage;
-
-       page = read_cache_page(mntpt->d_inode->i_mapping, 0, filler, NULL);
+       page = read_mapping_page(mntpt->d_inode->i_mapping, 0, NULL);
        if (IS_ERR(page)) {
                ret = PTR_ERR(page);
                goto error;
@@ -217,7 +203,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
 
        /* try and do the mount */
        kdebug("--- attempting mount %s -o %s ---", devname, options);
-       mnt = do_kern_mount("afs", 0, devname, options);
+       mnt = vfs_kern_mount(&afs_fs_type, 0, devname, options);
        kdebug("--- mount result %p ---", mnt);
 
        free_page((unsigned long) devname);
@@ -240,10 +226,10 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
 /*
  * follow a link from a mountpoint directory, thus causing it to be mounted
  */
-static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
-       struct nameidata newnd;
        struct vfsmount *newmnt;
+       struct dentry *old_dentry;
        int err;
 
        kenter("%p{%s},{%s:%p{%s}}",
@@ -254,15 +240,19 @@ static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
               nd->dentry->d_name.name);
 
        newmnt = afs_mntpt_do_automount(dentry);
-       if (IS_ERR(newmnt))
-               return PTR_ERR(newmnt);
+       if (IS_ERR(newmnt)) {
+               path_release(nd);
+               return (void *)newmnt;
+       }
+
+       old_dentry = nd->dentry;
+       nd->dentry = dentry;
+       err = do_add_mount(newmnt, nd, 0, &afs_vfsmounts);
+       nd->dentry = old_dentry;
 
-       struct_cpy(&newnd, nd);
-       newnd.dentry = dentry;
-       err = do_add_mount(newmnt, &newnd, 0, &afs_vfsmounts);
+       path_release(nd);
 
        if (!err) {
-               path_release(nd);
                mntget(newmnt);
                nd->mnt = newmnt;
                dget(newmnt->mnt_root);
@@ -270,7 +260,7 @@ static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
        }
 
        kleave(" = %d", err);
-       return err;
+       return ERR_PTR(err);
 } /* end afs_mntpt_follow_link() */
 
 /*****************************************************************************/
@@ -288,4 +278,3 @@ static void afs_mntpt_expiry_timed_out(struct afs_timer *timer)
 
        kleave("");
 } /* end afs_mntpt_expiry_timed_out() */
-#endif