switch ->get_link() to delayed_call, kill ->put_link()

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

1 files changed, 10 insertions, 9 deletions

diff --git a/fs/kernfs/symlink.c b/fs/kernfs/symlink.c
index f9efdaeda7b0..117b8b3416f9 100644
--- a/fs/kernfs/symlink.c
+++ b/fs/kernfs/symlink.c
@@ -113,22 +113,24 @@ static int kernfs_getlink(struct dentry *dentry, char *path)
 }
 
 static const char *kernfs_iop_get_link(struct dentry *dentry,
-                                       struct inode *inode, void **cookie)
+                                       struct inode *inode,
+                                       struct delayed_call *done)
 {
-        int error = -ENOMEM;
-        char *page;
+        char *body;
+        int error;
 
         if (!dentry)
                 return ERR_PTR(-ECHILD);
-        page = kzalloc(PAGE_SIZE, GFP_KERNEL);
-        if (!page)
+        body = kzalloc(PAGE_SIZE, GFP_KERNEL);
+        if (!body)
                 return ERR_PTR(-ENOMEM);
-        error = kernfs_getlink(dentry, page);
+        error = kernfs_getlink(dentry, body);
         if (unlikely(error < 0)) {
-                kfree(page);
+                kfree(body);
                 return ERR_PTR(error);
         }
-        return *cookie = page;
+        set_delayed_call(done, kfree_link, body);
+        return body;
 }
 
 const struct inode_operations kernfs_symlink_iops = {
@@ -138,7 +140,6 @@ const struct inode_operations kernfs_symlink_iops = {
         .listxattr      = kernfs_iop_listxattr,
         .readlink       = generic_readlink,
         .get_link       = kernfs_iop_get_link,
-        .put_link       = kfree_put_link,
         .setattr        = kernfs_iop_setattr,
         .getattr        = kernfs_iop_getattr,
         .permission     = kernfs_iop_permission,