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Merge tag 'pull-f_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

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Pull file->f_path constification from Al Viro:
 "Only one thing was modifying ->f_path of an opened file - acct(2).

  Massaging that away and constifying a bunch of struct path * arguments
  in functions that might be given &file->f_path ends up with the
  situation where we can turn ->f_path into an anon union of const
  struct path f_path and struct path __f_path, the latter modified only
  in a few places in fs/{file_table,open,namei}.c, all for struct file
  instances that are yet to be opened"

* tag 'pull-f_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (23 commits)
  Have cc(1) catch attempts to modify ->f_path
  kernel/acct.c: saner struct file treatment
  configfs:get_target() - release path as soon as we grab configfs_item reference
  apparmor/af_unix: constify struct path * arguments
  ovl_is_real_file: constify realpath argument
  ovl_sync_file(): constify path argument
  ovl_lower_dir(): constify path argument
  ovl_get_verity_digest(): constify path argument
  ovl_validate_verity(): constify {meta,data}path arguments
  ovl_ensure_verity_loaded(): constify datapath argument
  ksmbd_vfs_set_init_posix_acl(): constify path argument
  ksmbd_vfs_inherit_posix_acl(): constify path argument
  ksmbd_vfs_kern_path_unlock(): constify path argument
  ksmbd_vfs_path_lookup_locked(): root_share_path can be const struct path *
  check_export(): constify path argument
  export_operations->open(): constify path argument
  rqst_exp_get_by_name(): constify path argument
  nfs: constify path argument of __vfs_getattr()
  bpf...d_path(): constify path argument
  done_path_create(): constify path argument
  ...
This commit is contained in:
Linus Torvalds
2025-10-03 16:32:36 -07:00
parent 070a542f08 2f7d98f10b
commit 50647a1176
26 changed files with 118 additions and 144 deletions
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10
fs/open.c
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@@ -1022,8 +1022,8 @@ cleanup_all:
put_file_access(f);
cleanup_file:
path_put(&f->f_path);
f->f_path.mnt = NULL;
f->f_path.dentry = NULL;
f->__f_path.mnt = NULL;
f->__f_path.dentry = NULL;
f->f_inode = NULL;
return error;
}
@@ -1050,7 +1050,7 @@ int finish_open(struct file *file, struct dentry *dentry,
{
BUG_ON(file->f_mode & FMODE_OPENED); /* once it's opened, it's opened */
file->f_path.dentry = dentry;
file->__f_path.dentry = dentry;
return do_dentry_open(file, open);
}
EXPORT_SYMBOL(finish_open);
@@ -1073,7 +1073,7 @@ int finish_no_open(struct file *file, struct dentry *dentry)
{
if (IS_ERR(dentry))
return PTR_ERR(dentry);
file->f_path.dentry = dentry;
file->__f_path.dentry = dentry;
return 0;
}
EXPORT_SYMBOL(finish_no_open);
@@ -1093,7 +1093,7 @@ int vfs_open(const struct path *path, struct file *file)
{
int ret;
file->f_path = *path;
file->__f_path = *path;
ret = do_dentry_open(file, NULL);
if (!ret) {
/*