[PATCH] man/man2/fanotify_mark.2: AT_FDCWD plus NULL path doesn't work

The fanotify_mark.2 manpage claims that AT_FDCWD works with a NULL path,
but there is no kernel code for that - in fanotify_find_path(), in the
`if (filename == NULL)` block, the fd is only used for a normal FD
lookup.

This was also already the case when this manpage was written back in
2014, so remove the bogus documentation.

Fixes: c200b422d ("fanotify_mark.2: New page documenting fanotify_mark(2)")
Signed-off-by: Jann Horn <[email protected]>
---
 man/man2/fanotify_mark.2 | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/man/man2/fanotify_mark.2 b/man/man2/fanotify_mark.2
index e561ffd21..a3b77537c 100644
--- a/man/man2/fanotify_mark.2
+++ b/man/man2/fanotify_mark.2
@@ -560,14 +560,6 @@ defines the filesystem object to be marked.
 .IP \[bu]
 If
 .I path
-is NULL, and
-.I dirfd
-takes the special value
-.BR AT_FDCWD ,
-the current working directory is to be marked.
-.IP \[bu]
-If
-.I path
 is absolute, it defines the filesystem object to be marked, and
 .I dirfd
 is ignored.

---
base-commit: 9db8ca91f920b9aba40ed68de6b8da0ca9dbefaa
change-id: 20260529-fan-mark-cwd-1c760106eff9

Best regards,
--  
Jann Horn <[email protected]>