From: Shiyang Ruan <ruansy.fnst@fujitsu.com>
To: <linux-kernel@vger.kernel.org>, <linux-xfs@vger.kernel.org>,
<nvdimm@lists.linux.dev>, <linux-mm@kvack.org>,
<linux-fsdevel@vger.kernel.org>
Cc: <djwong@kernel.org>, <dan.j.williams@intel.com>,
<david@fromorbit.com>, <hch@infradead.org>, <jane.chu@oracle.com>
Subject: [PATCH v13 0/7] fsdax: introduce fs query to support reflink
Date: Tue, 19 Apr 2022 12:50:38 +0800 [thread overview]
Message-ID: <20220419045045.1664996-1-ruansy.fnst@fujitsu.com> (raw)
This patchset is aimed to support shared pages tracking for fsdax.
Changes since V12:
- Rebased onto next-20220414
- Do not continue ->notify_failure() if filesystem is not ready yet
- Simplify the logic of setting CoW flag
- Fix build warning/error and typo
This patchset moves owner tracking from dax_assocaite_entry() to pmem
device driver, by introducing an interface ->memory_failure() for struct
pagemap. This interface is called by memory_failure() in mm, and
implemented by pmem device.
Then call holder operations to find the filesystem which the corrupted
data located in, and call filesystem handler to track files or metadata
associated with this page.
Finally we are able to try to fix the corrupted data in filesystem and
do other necessary processing, such as killing processes who are using
the files affected.
The call trace is like this:
memory_failure()
|* fsdax case
|------------
|pgmap->ops->memory_failure() => pmem_pgmap_memory_failure()
| dax_holder_notify_failure() =>
| dax_device->holder_ops->notify_failure() =>
| - xfs_dax_notify_failure()
| |* xfs_dax_notify_failure()
| |--------------------------
| | xfs_rmap_query_range()
| | xfs_dax_failure_fn()
| | * corrupted on metadata
| | try to recover data, call xfs_force_shutdown()
| | * corrupted on file data
| | try to recover data, call mf_dax_kill_procs()
|* normal case
|-------------
|mf_generic_kill_procs()
==
Shiyang Ruan (7):
dax: Introduce holder for dax_device
mm: factor helpers for memory_failure_dev_pagemap
pagemap,pmem: Introduce ->memory_failure()
fsdax: Introduce dax_lock_mapping_entry()
mm: Introduce mf_dax_kill_procs() for fsdax case
xfs: Implement ->notify_failure() for XFS
fsdax: set a CoW flag when associate reflink mappings
drivers/dax/super.c | 67 +++++++++-
drivers/md/dm.c | 2 +-
drivers/nvdimm/pmem.c | 17 +++
fs/dax.c | 113 ++++++++++++++--
fs/erofs/super.c | 10 +-
fs/ext2/super.c | 7 +-
fs/ext4/super.c | 9 +-
fs/xfs/Makefile | 5 +
fs/xfs/xfs_buf.c | 10 +-
fs/xfs/xfs_fsops.c | 3 +
fs/xfs/xfs_mount.h | 1 +
fs/xfs/xfs_notify_failure.c | 220 +++++++++++++++++++++++++++++++
fs/xfs/xfs_super.h | 1 +
include/linux/dax.h | 48 +++++--
include/linux/memremap.h | 12 ++
include/linux/mm.h | 2 +
include/linux/page-flags.h | 6 +
mm/memory-failure.c | 255 +++++++++++++++++++++++++-----------
18 files changed, 682 insertions(+), 106 deletions(-)
create mode 100644 fs/xfs/xfs_notify_failure.c
--
2.35.1
next reply other threads:[~2022-04-19 4:52 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-19 4:50 Shiyang Ruan [this message]
2022-04-19 4:50 ` [PATCH v13 1/7] dax: Introduce holder for dax_device Shiyang Ruan
2022-04-20 17:42 ` Darrick J. Wong
2022-04-19 4:50 ` [PATCH v13 2/7] mm: factor helpers for memory_failure_dev_pagemap Shiyang Ruan
2022-04-21 6:13 ` HORIGUCHI NAOYA(堀口 直也)
2022-04-21 8:10 ` Shiyang Ruan
2022-04-21 8:12 ` Miaohe Lin
2022-04-19 4:50 ` [PATCH v13 3/7] pagemap,pmem: Introduce ->memory_failure() Shiyang Ruan
2022-04-20 17:45 ` Darrick J. Wong
2022-04-21 6:54 ` HORIGUCHI NAOYA(堀口 直也)
2022-04-21 8:24 ` Miaohe Lin
2022-04-22 7:06 ` Shiyang Ruan
2022-04-24 2:00 ` Miaohe Lin
2022-04-19 4:50 ` [PATCH v13 4/7] fsdax: Introduce dax_lock_mapping_entry() Shiyang Ruan
2022-04-20 17:53 ` Darrick J. Wong
2022-04-19 4:50 ` [PATCH v13 5/7] mm: Introduce mf_dax_kill_procs() for fsdax case Shiyang Ruan
2022-04-20 17:58 ` Darrick J. Wong
2022-04-21 8:47 ` Miaohe Lin
2022-04-21 12:50 ` HORIGUCHI NAOYA(堀口 直也)
2022-04-19 4:50 ` [PATCH v13 6/7] xfs: Implement ->notify_failure() for XFS Shiyang Ruan
2022-04-19 15:38 ` Darrick J. Wong
2022-04-20 7:33 ` [PATCH v13.1 " Shiyang Ruan
2022-04-20 17:30 ` Darrick J. Wong
2022-04-19 4:50 ` [PATCH v13 7/7] fsdax: set a CoW flag when associate reflink mappings Shiyang Ruan
2022-04-19 7:27 ` Christoph Hellwig
2022-04-20 17:35 ` Darrick J. Wong
2022-04-21 1:20 ` [PATCH v13 0/7] fsdax: introduce fs query to support reflink Dave Chinner
2022-04-21 1:48 ` Shiyang Ruan
2022-04-21 2:20 ` Dan Williams
2022-04-21 4:35 ` Dave Chinner
2022-04-21 5:47 ` HORIGUCHI NAOYA(堀口 直也)
2022-04-21 5:54 ` Christoph Hellwig
2022-04-21 7:46 ` Dave Chinner
2022-04-22 21:27 ` Dan Williams
2022-04-23 0:01 ` Dave Chinner
2022-04-23 17:32 ` Dan Williams
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