From: Jane Chu <jane.chu@oracle.com>
To: dan.j.williams@intel.com, vishal.l.verma@intel.com,
dave.jiang@intel.com, ira.weiny@intel.com,
viro@zeniv.linux.org.uk, willy@infradead.org, jack@suse.cz,
nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org
Subject: [PATCH 0/3] dax: clear poison on the fly along pwrite
Date: Tue, 14 Sep 2021 17:31:28 -0600 [thread overview]
Message-ID: <20210914233132.3680546-1-jane.chu@oracle.com> (raw)
If pwrite(2) encounters poison in a pmem range, it fails with EIO.
This is unecessary if hardware is capable of clearing the poison.
Though not all dax backend hardware has the capability of clearing
poison on the fly, but dax backed by Intel DCPMEM has such capability,
and it's desirable to, first, speed up repairing by means of it;
second, maintain backend continuity instead of fragmenting it in
search for clean blocks.
Jane Chu (3):
dax: introduce dax_operation dax_clear_poison
dax: introduce dax_clear_poison to dax pwrite operation
libnvdimm/pmem: Provide pmem_dax_clear_poison for dax operation
drivers/dax/super.c | 13 +++++++++++++
drivers/nvdimm/pmem.c | 17 +++++++++++++++++
fs/dax.c | 9 +++++++++
include/linux/dax.h | 6 ++++++
4 files changed, 45 insertions(+)
--
2.18.4
next reply other threads:[~2021-09-14 23:32 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-14 23:31 Jane Chu [this message]
2021-09-14 23:31 ` [PATCH 1/3] dax: introduce dax_operation dax_clear_poison Jane Chu
2021-11-04 17:53 ` Christoph Hellwig
2021-09-14 23:31 ` [PATCH 2/3] dax: introduce dax_clear_poison to dax pwrite operation Jane Chu
2021-11-04 17:53 ` Christoph Hellwig
2021-09-14 23:31 ` [PATCH 2/3] dax: introduce dax clear poison to page aligned " Jane Chu
2021-09-14 23:31 ` [PATCH 3/3] libnvdimm/pmem: Provide pmem_dax_clear_poison for dax operation Jane Chu
2021-11-04 17:55 ` Christoph Hellwig
2021-11-04 20:27 ` Jane Chu
2021-09-15 4:44 ` [PATCH 0/3] dax: clear poison on the fly along pwrite Dan Williams
2021-09-15 7:22 ` Jane Chu
2021-09-15 16:15 ` Darrick J. Wong
2021-09-15 20:27 ` Dan Williams
2021-09-16 0:05 ` Darrick J. Wong
2021-09-16 7:11 ` Christoph Hellwig
2021-09-16 18:40 ` Dan Williams
2021-09-17 12:53 ` Christoph Hellwig
2021-09-17 15:27 ` Darrick J. Wong
2021-09-17 20:21 ` Dan Williams
2021-09-18 0:07 ` Darrick J. Wong
2021-09-17 19:37 ` Dan Williams
2021-09-23 20:48 ` Jane Chu
2021-09-23 20:55 ` Jane Chu
2021-09-23 21:42 ` Dan Williams
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