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Kemeng Shi e08d5f5156 mm: shmem: avoid unpaired folio_unlock() in shmem_swapin_folio()
Patch series "Some random fixes and cleanup to shmem", v3.

This series contains some simple fixes and cleanup which are made during
learning shmem.  More details can be found in respective patches.


This patch (of 5):

If we get a folio from swap_cache_get_folio() successfully but encounter a
failure before the folio is locked, we will unlock the folio which was not
previously locked.

Put the folio and set it to NULL when a failure occurs before the folio is
locked to fix the issue.

Link: https://lkml.kernel.org/r/20250516170939.965736-1-shikemeng@huaweicloud.com
Link: https://lkml.kernel.org/r/20250516170939.965736-2-shikemeng@huaweicloud.com
Fixes: 058313515d ("mm: shmem: fix potential data corruption during shmem swapin")
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Kairui Song <kasong@tencent.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-05-31 22:46:10 -07:00
arch mm: rename page->index to page->__folio_index 2025-05-31 22:46:06 -07:00
block block-6.15-20250509 2025-05-09 10:34:50 -07:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: scompress - increment scomp_scratch_users when already allocated 2025-04-25 10:33:30 +08:00
Documentation Docs/damon: update titles and brief introductions to explain DAMOS 2025-05-22 14:55:38 -07:00
drivers zram: support deflate-specific params 2025-05-31 22:46:07 -07:00
fs ntfs3: use folios more in ntfs_compress_write() 2025-05-31 22:46:07 -07:00
include memcg: nmi safe memcg stats for specific archs 2025-05-31 22:46:08 -07:00
init memcg: nmi safe memcg stats for specific archs 2025-05-31 22:46:08 -07:00
io_uring io_uring/sqpoll: Increase task_work submission batch size 2025-05-09 07:56:53 -06:00
ipc treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
kernel mm: rename page->index to page->__folio_index 2025-05-31 22:46:06 -07:00
lib iov: remove copy_page_from_iter_atomic() 2025-05-31 22:46:07 -07:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm mm: shmem: avoid unpaired folio_unlock() in shmem_swapin_folio() 2025-05-31 22:46:10 -07:00
net net: export a helper for adding up queue stats 2025-05-08 11:56:12 +02:00
rust task: rust: rework how current is accessed 2025-05-11 17:48:25 -07:00
samples samples/damon: implement a DAMON module for memory tiering 2025-05-12 23:50:30 -07:00
scripts scripts: Do not strip .rela.dyn section 2025-05-08 12:01:01 +00:00
security Landlock fix for v6.15-rc4 2025-04-24 12:59:05 -07:00
sound ASoC: Fixes for v6.15 2025-05-01 10:22:20 +02:00
tools selftests/mm: deduplicate default page size test results in thuge-gen 2025-05-31 22:46:08 -07:00
usr kbuild: hdrcheck: fix cross build with clang 2025-03-05 04:06:45 +09:00
virt ARM: 2025-04-08 13:47:55 -07:00
.clang-format clang-format: Update the ForEachMacros list for v6.15-rc1 2025-04-13 11:03:59 +02:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: Retire Ralf Baechle 2024-11-12 15:48:59 +01:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: Create intermediate vmlinux build with relocations preserved 2025-03-17 00:29:50 +09:00
.mailmap Input updates for v6.15-rc5 2025-05-11 10:29:29 -07:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS Update Christoph's Email address and make it consistent 2025-05-12 23:50:31 -07:00
Kbuild drm: ensure drm headers are self-contained and pass kernel-doc 2025-02-12 10:44:43 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS MAINTAINERS: add kernel/fork.c to relevant sections 2025-05-22 14:55:37 -07:00
Makefile Linux 6.15-rc6 2025-05-11 14:54:11 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.