FROMGIT: mm: move FAULT_FLAG_VMA_LOCK check down in handle_pte_fault()

Call do_pte_missing() under the VMA lock ...  then immediately retry in
do_fault().

Link: https://lkml.kernel.org/r/20230724185410.1124082-7-willy@infradead.org


Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Cc: Arjun Roy <arjunroy@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Punit Agrawal <punit.agrawal@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

(cherry picked from commit 4c753b25481499cd1cb6a8ddba18bc5585f34296
https: //git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable)

Bug: 293665307
Change-Id: I8c8f2feaade7c40daf37b63e43111d22ec147e5f
Signed-off-by: Suren Baghdasaryan <surenb@google.com>