From: Christoph Hellwig <hch@infradead.org>
To: Vishal Verma <vishal.l.verma@intel.com>
Cc: linux-nvdimm@ml01.01.org, linux-fsdevel@vger.kernel.org,
linux-block@vger.kernel.org, xfs@oss.sgi.com,
linux-ext4@vger.kernel.org, linux-mm@kvack.org,
Matthew Wilcox <matthew.r.wilcox@intel.com>,
Ross Zwisler <ross.zwisler@linux.intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Dave Chinner <david@fromorbit.com>, Jan Kara <jack@suse.cz>,
Jens Axboe <axboe@fb.com>, Al Viro <viro@zeniv.linux.org.uk>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 5/5] dax: handle media errors in dax_do_io
Date: Fri, 25 Mar 2016 03:45:49 -0700 [thread overview]
Message-ID: <20160325104549.GB10525@infradead.org> (raw)
In-Reply-To: <1458861450-17705-6-git-send-email-vishal.l.verma@intel.com>
On Thu, Mar 24, 2016 at 05:17:30PM -0600, Vishal Verma wrote:
> dax_do_io (called for read() or write() for a dax file system) may fail
> in the presence of bad blocks or media errors. Since we expect that a
> write should clear media errors on nvdimms, make dax_do_io fall back to
> the direct_IO path, which will send down a bio to the driver, which can
> then attempt to clear the error.
Leave the fallback on -EIO to the callers please. They generally call
__blockdev_direct_IO anyway, so it should actually become simpler that
way.
next prev parent reply other threads:[~2016-03-25 10:45 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-24 23:17 [PATCH 0/5] dax: handling of media errors Vishal Verma
2016-03-24 23:17 ` [PATCH 1/5] block, dax: pass blk_dax_ctl through to drivers Vishal Verma
2016-03-24 23:17 ` [PATCH 2/5] dax: fallback from pmd to pte on error Vishal Verma
2016-03-24 23:17 ` [PATCH 3/5] dax: enable dax in the presence of known media errors (badblocks) Vishal Verma
2016-03-24 23:23 ` Verma, Vishal L
2016-03-24 23:17 ` [PATCH 4/5] dax: use sb_issue_zerout instead of calling dax_clear_sectors Vishal Verma
2016-03-25 10:44 ` Christoph Hellwig
2016-03-25 21:01 ` Verma, Vishal L
2016-03-25 18:47 ` Dan Williams
2016-03-25 21:03 ` Verma, Vishal L
2016-03-25 21:20 ` Dan Williams
2016-03-28 20:01 ` Verma, Vishal L
2016-03-28 23:34 ` Dan Williams
2016-03-29 18:57 ` Verma, Vishal L
2016-03-29 19:37 ` Dan Williams
2016-03-30 7:49 ` Jan Kara
2016-04-01 19:17 ` Verma, Vishal L
2016-04-04 12:09 ` Jan Kara
2016-03-24 23:17 ` [PATCH 5/5] dax: handle media errors in dax_do_io Vishal Verma
2016-03-25 10:45 ` Christoph Hellwig [this message]
2016-03-25 20:59 ` Verma, Vishal L
2016-03-25 21:42 ` Dan Williams
2016-03-25 22:36 ` Verma, Vishal L
2016-03-26 16:53 ` hch
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