do_dentry_open(): take initialization of file->f_path to caller
... and get rid of a couple of arguments and a pointless reassignment
in finish_open() case.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/open.c b/fs/open.c
index 28fbacb..124ccb1 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -667,8 +667,7 @@
return 0;
}
-static int do_dentry_open(struct dentry *dentry, struct vfsmount *mnt,
- struct file *f,
+static int do_dentry_open(struct file *f,
int (*open)(struct inode *, struct file *),
const struct cred *cred)
{
@@ -682,9 +681,9 @@
if (unlikely(f->f_flags & O_PATH))
f->f_mode = FMODE_PATH;
- inode = dentry->d_inode;
+ inode = f->f_path.dentry->d_inode;
if (f->f_mode & FMODE_WRITE) {
- error = __get_file_write_access(inode, mnt);
+ error = __get_file_write_access(inode, f->f_path.mnt);
if (error)
goto cleanup_file;
if (!special_file(inode->i_mode))
@@ -692,8 +691,6 @@
}
f->f_mapping = inode->i_mapping;
- f->f_path.dentry = dentry;
- f->f_path.mnt = mnt;
f->f_pos = 0;
file_sb_list_add(f, inode->i_sb);
@@ -740,15 +737,14 @@
* here, so just reset the state.
*/
file_reset_write(f);
- mnt_drop_write(mnt);
+ mnt_drop_write(f->f_path.mnt);
}
}
file_sb_list_del(f);
- f->f_path.dentry = NULL;
- f->f_path.mnt = NULL;
cleanup_file:
- dput(dentry);
- mntput(mnt);
+ path_put(&f->f_path);
+ f->f_path.mnt = NULL;
+ f->f_path.dentry = NULL;
return error;
}
@@ -771,9 +767,9 @@
BUG_ON(*opened & FILE_OPENED); /* once it's opened, it's opened */
mntget(file->f_path.mnt);
- dget(dentry);
+ file->f_path.dentry = dget(dentry);
- error = do_dentry_open(dentry, file->f_path.mnt, file, open, current_cred());
+ error = do_dentry_open(file, open, current_cred());
if (!error)
*opened |= FILE_OPENED;
@@ -821,7 +817,9 @@
}
f->f_flags = flags;
- error = do_dentry_open(dentry, mnt, f, NULL, cred);
+ f->f_path.mnt = mnt;
+ f->f_path.dentry = dentry;
+ error = do_dentry_open(f, NULL, cred);
if (!error) {
error = open_check_o_direct(f);
if (error) {