cache the value of file_inode() in struct file
Note that this thing does *not* contribute to inode refcount;
it's pinned down by dentry.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/file_table.c b/fs/file_table.c
index aa07d36..cd4d87a 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -176,6 +176,7 @@
return file;
file->f_path = *path;
+ file->f_inode = path->dentry->d_inode;
file->f_mapping = path->dentry->d_inode->i_mapping;
file->f_mode = mode;
file->f_op = fop;
@@ -258,6 +259,7 @@
drop_file_write_access(file);
file->f_path.dentry = NULL;
file->f_path.mnt = NULL;
+ file->f_inode = NULL;
file_free(file);
dput(dentry);
mntput(mnt);