udf_rename(): only access the child content on cross-directory rename

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We can't really afford locking the source on same-directory rename;
currently vfs_rename() tries to do that, but it will have to be
changed.  The logics in udf_rename() is lazy and goes looking for
".." in source even in same-directory case.  It's not hard to get
rid of that, leaving that behaviour only for cross-directory case;
that VFS can get locks safely (and will keep doing that after the
coming changes).

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Al Viro 2023-10-17 14:44:23 -04:00

parent 9d618d19b2

commit 9d35cebb79

1 changed files with 6 additions and 1 deletions

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fs/udf/namei.c

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