mm/swap_state.c: remove the meaningless code comment

Since commit 8d93b41c09d1 ("mm: Convert add_to_swap_cache to XArray"),
there's no returned _EEXIT, so the code comment doesn't make sense any
more.

Link: https://lkml.kernel.org/r/20250205092721.9395-9-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Kairui Song <ryncsn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/swap_state.c b/mm/swap_state.c
index 8a84371980e94fde4e3da5e7d902978269f74cf1..718a8de0c07d3fdf4d2a337d0dbe752ca007c539 100644 (file)
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -203,10 +203,6 @@ bool add_to_swap(struct folio *folio)
        err = add_to_swap_cache(folio, entry,
                        __GFP_HIGH|__GFP_NOMEMALLOC|__GFP_NOWARN, NULL);
        if (err)
-               /*
-                * add_to_swap_cache() doesn't return -EEXIST, so we can safely
-                * clear SWAP_HAS_CACHE flag.
-                */
                goto fail;
        /*
         * Normally the folio will be dirtied in unmap because its