From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3AD55365A08 for ; Thu, 2 Apr 2026 18:20:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775154058; cv=none; b=SjYw3bShzW0qmnSNkUKbIfZZia9fO9W2UGIJqE+uTRGrRgZ/BIMTwjrTY918wA+OgUu5tXOagjc1a+SoiIv0/MM53njY9mkdCN4cI4ijxqU29N5thmzwlKwlaY+M2vVxv03liM0rZuNLVkWAgLdK+5PaO/sJN1zJDNLZKCTQ71c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775154058; c=relaxed/simple; bh=w6wWriOhPpIpX/7w8SdNbVPIhlPN/jf8e61N1Q2oHbU=; h=Date:To:From:Subject:Message-Id; b=jjOuxY5qskI2giPSDqzU1v4Gwc2gzyTkBx1qh9eGHjkqWgd8GHJK4fhTquOmHcJZeRTAT7o1CgxodSC2GoeKBnVROgHPHyZxfUx4Bd1bVDrfgmAYXV8Xs9JN8oXPs2jA0lsPh5lY4rBoswwRQOq2zmhM2GNB3/wI9SHyfkazSSY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=kbJbT/IF; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="kbJbT/IF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C8D36C116C6; Thu, 2 Apr 2026 18:20:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1775154057; bh=w6wWriOhPpIpX/7w8SdNbVPIhlPN/jf8e61N1Q2oHbU=; h=Date:To:From:Subject:From; b=kbJbT/IFFEDu/LsZNq+LGNDjtuul7adxLzYlNoGFTzPqKpkgHU8pv1Lw+s5sqm0ZW xCIoaDK6Y/E0w1TrdAlcnL9XDQX/z3PACca/kNqVx1g/OZIYnS2DujBeYHa+XCtVPu J4O+RrbUOBQtuduFH+dC879HnEPegAjshBpwJ7SI= Date: Thu, 02 Apr 2026 11:20:57 -0700 To: mm-commits@vger.kernel.org,willy@infradead.org,vbabka@suse.cz,surenb@google.com,shuah@kernel.org,seanjc@google.com,peterx@redhat.com,pbonzini@redhat.com,osalvador@suse.de,muchun.song@linux.dev,mhocko@suse.com,ljs@kernel.org,liam.howlett@oracle.com,kalyazin@amazon.com,jthoughton@google.com,hughd@google.com,harry.yoo@oracle.com,harry@kernel.org,david@kernel.org,baolin.wang@linux.alibaba.com,axelrasmussen@google.com,avagin@google.com,aarcange@redhat.com,rppt@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + userfaultfd-mfill_atomic-remove-retry-logic-fix.patch added to mm-unstable branch Message-Id: <20260402182057.C8D36C116C6@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: userfaultfd: remove safety measure of not returning ENOENT from _copy has been added to the -mm mm-unstable branch. Its filename is userfaultfd-mfill_atomic-remove-retry-logic-fix.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/userfaultfd-mfill_atomic-remove-retry-logic-fix.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: : Mike Rapoport (Microsoft) Subject: userfaultfd: remove safety measure of not returning ENOENT from _copy Date: Thu Apr 2 16:38:39 2026 +0300 Link: https://lkml.kernel.org/r/ac5zcDUY8CFHr6Lw@kernel.org Signed-off-by: Mike Rapoport (Microsoft) Cc: Andrea Arcangeli Cc: Andrei Vagin Cc: Axel Rasmussen Cc: Baolin Wang Cc: David Hildenbrand (Arm) Cc: Harry Yoo Cc: Harry Yoo (Oracle) Cc: Hugh Dickins Cc: James Houghton Cc: Liam Howlett Cc: Lorenzo Stoakes (Oracle) Cc: Matthew Wilcox (Oracle) Cc: Michal Hocko Cc: Muchun Song Cc: Nikita Kalyazin Cc: Oscar Salvador Cc: Paolo Bonzini Cc: Peter Xu Cc: Sean Christopherson Cc: Shuah Khan Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- mm/userfaultfd.c | 3 --- 1 file changed, 3 deletions(-) --- a/mm/userfaultfd.c~userfaultfd-mfill_atomic-remove-retry-logic-fix +++ a/mm/userfaultfd.c @@ -530,9 +530,6 @@ err_filemap_remove: ops->filemap_remove(folio, state->vma); err_folio_put: folio_put(folio); - /* Don't return -ENOENT so that our caller won't retry */ - if (ret == -ENOENT) - ret = -EFAULT; return ret; } _ Patches currently in -mm which might be from rppt@kernel.org are userfaultfd-introduce-mfill_copy_folio_locked-helper.patch userfaultfd-introduce-struct-mfill_state.patch userfaultfd-introduce-mfill_establish_pmd-helper.patch userfaultfd-introduce-mfill_get_vma-and-mfill_put_vma.patch userfaultfd-retry-copying-with-locks-dropped-in-mfill_atomic_pte_copy.patch userfaultfd-move-vma_can_userfault-out-of-line.patch userfaultfd-introduce-vm_uffd_ops.patch shmem-userfaultfd-use-a-vma-callback-to-handle-uffdio_continue.patch userfaultfd-introduce-vm_uffd_ops-alloc_folio.patch shmem-userfaultfd-implement-shmem-uffd-operations-using-vm_uffd_ops.patch userfaultfd-mfill_atomic-remove-retry-logic.patch userfaultfd-mfill_atomic-remove-retry-logic-fix.patch