mm/swapfile.c: remove the incorrect code comment

Since commit eb085574a752 ("mm, swap: fix race between swapoff and some
swap operations"), the non_swap_entry() checking has been taken off from
function __swap_duplicate().  Hence, in the kernel-doc comment, the line
'swp_entry is migration entry -> EINVAL' is obsolete.  Remove that line to
avoid misleading people.

Link: https://lkml.kernel.org/r/20250205092721.9395-12-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/swapfile.c b/mm/swapfile.c
index d45349ed3ee10c5c600983fec1d9ca68c4300f80..c73e258bb58841d7fb9f3deee0043ae9a54862b7 100644 (file)
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -3529,7 +3529,6 @@ void si_swapinfo(struct sysinfo *val)
  * Returns error code in following case.
  * - success -> 0
  * - swp_entry is invalid -> EINVAL
- * - swp_entry is migration entry -> EINVAL
  * - swap-cache reference is requested but there is already one. -> EEXIST
  * - swap-cache reference is requested but the entry is not used. -> ENOENT
  * - swap-mapped reference requested but needs continued swap count. -> ENOMEM