From: Vishal Verma <vishal.l.verma@intel.com>
To: linux-nvdimm@lists.01.org
Cc: Jens Axboe <axboe@fb.com>, Jan Kara <jack@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
Dave Chinner <david@fromorbit.com>,
xfs@oss.sgi.com, linux-block@vger.kernel.org, linux-mm@kvack.org,
Matthew Wilcox <matthew.r.wilcox@intel.com>,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
Al Viro <viro@zeniv.linux.org.uk>
Subject: [PATCH 2/5] dax: fallback from pmd to pte on error
Date: Thu, 24 Mar 2016 17:17:27 -0600 [thread overview]
Message-ID: <1458861450-17705-3-git-send-email-vishal.l.verma@intel.com> (raw)
In-Reply-To: <1458861450-17705-1-git-send-email-vishal.l.verma@intel.com>
From: Dan Williams <dan.j.williams@intel.com>
From: Dan Williams <dan.j.williams@intel.com>
In preparation for consulting a badblocks list in pmem_direct_access(),
teach dax_pmd_fault() to fallback rather than fail immediately upon
encountering an error. The thought being that reducing the span of the
dax request may avoid the error region.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
fs/dax.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/dax.c b/fs/dax.c
index bbb2ad7..bb7e9f8 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -940,8 +940,8 @@ int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address,
long length = dax_map_atomic(bdev, &dax);
if (length < 0) {
- result = VM_FAULT_SIGBUS;
- goto out;
+ dax_pmd_dbg(&bh, address, "dax-error fallback");
+ goto fallback;
}
if (length < PMD_SIZE) {
dax_pmd_dbg(&bh, address, "dax-length too small");
--
2.5.5
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WARNING: multiple messages have this Message-ID (diff)
From: Vishal Verma <vishal.l.verma@intel.com>
To: linux-nvdimm@lists.01.org
Cc: Dan Williams <dan.j.williams@intel.com>,
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>,
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: [PATCH 2/5] dax: fallback from pmd to pte on error
Date: Thu, 24 Mar 2016 17:17:27 -0600 [thread overview]
Message-ID: <1458861450-17705-3-git-send-email-vishal.l.verma@intel.com> (raw)
In-Reply-To: <1458861450-17705-1-git-send-email-vishal.l.verma@intel.com>
From: Dan Williams <dan.j.williams@intel.com>
From: Dan Williams <dan.j.williams@intel.com>
In preparation for consulting a badblocks list in pmem_direct_access(),
teach dax_pmd_fault() to fallback rather than fail immediately upon
encountering an error. The thought being that reducing the span of the
dax request may avoid the error region.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
fs/dax.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/dax.c b/fs/dax.c
index bbb2ad7..bb7e9f8 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -940,8 +940,8 @@ int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address,
long length = dax_map_atomic(bdev, &dax);
if (length < 0) {
- result = VM_FAULT_SIGBUS;
- goto out;
+ dax_pmd_dbg(&bh, address, "dax-error fallback");
+ goto fallback;
}
if (length < PMD_SIZE) {
dax_pmd_dbg(&bh, address, "dax-length too small");
--
2.5.5
--
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WARNING: multiple messages have this Message-ID (diff)
From: Vishal Verma <vishal.l.verma@intel.com>
To: linux-nvdimm@lists.01.org
Cc: Jens Axboe <axboe@fb.com>, Jan Kara <jack@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
xfs@oss.sgi.com, linux-block@vger.kernel.org, linux-mm@kvack.org,
Matthew Wilcox <matthew.r.wilcox@intel.com>,
linux-fsdevel@vger.kernel.org,
Dan Williams <dan.j.williams@intel.com>,
linux-ext4@vger.kernel.org,
Ross Zwisler <ross.zwisler@linux.intel.com>,
Al Viro <viro@zeniv.linux.org.uk>
Subject: [PATCH 2/5] dax: fallback from pmd to pte on error
Date: Thu, 24 Mar 2016 17:17:27 -0600 [thread overview]
Message-ID: <1458861450-17705-3-git-send-email-vishal.l.verma@intel.com> (raw)
In-Reply-To: <1458861450-17705-1-git-send-email-vishal.l.verma@intel.com>
From: Dan Williams <dan.j.williams@intel.com>
From: Dan Williams <dan.j.williams@intel.com>
In preparation for consulting a badblocks list in pmem_direct_access(),
teach dax_pmd_fault() to fallback rather than fail immediately upon
encountering an error. The thought being that reducing the span of the
dax request may avoid the error region.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
fs/dax.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/dax.c b/fs/dax.c
index bbb2ad7..bb7e9f8 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -940,8 +940,8 @@ int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address,
long length = dax_map_atomic(bdev, &dax);
if (length < 0) {
- result = VM_FAULT_SIGBUS;
- goto out;
+ dax_pmd_dbg(&bh, address, "dax-error fallback");
+ goto fallback;
}
if (length < PMD_SIZE) {
dax_pmd_dbg(&bh, address, "dax-length too small");
--
2.5.5
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xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2016-03-24 23:18 UTC|newest]
Thread overview: 74+ 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 ` Vishal Verma
2016-03-24 23:17 ` Vishal Verma
2016-03-24 23:17 ` 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 ` Vishal Verma
2016-03-24 23:17 ` Vishal Verma [this message]
2016-03-24 23:17 ` [PATCH 2/5] dax: fallback from pmd to pte on error Vishal Verma
2016-03-24 23:17 ` 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 23:17 ` Vishal Verma
2016-03-24 23:17 ` Vishal Verma
2016-03-24 23:23 ` Verma, Vishal L
2016-03-24 23:23 ` Verma, Vishal L
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
2016-03-24 23:17 ` Vishal Verma
2016-03-24 23:17 ` Vishal Verma
2016-03-25 10:44 ` Christoph Hellwig
2016-03-25 10:44 ` Christoph Hellwig
2016-03-25 21:01 ` Verma, Vishal L
2016-03-25 21:01 ` Verma, Vishal L
2016-03-25 18:47 ` Dan Williams
2016-03-25 18:47 ` Dan Williams
2016-03-25 18:47 ` Dan Williams
2016-03-25 21:03 ` Verma, Vishal L
2016-03-25 21:03 ` Verma, Vishal L
2016-03-25 21:03 ` Verma, Vishal L
2016-03-25 21:20 ` Dan Williams
2016-03-25 21:20 ` Dan Williams
2016-03-25 21:20 ` Dan Williams
2016-03-28 20:01 ` Verma, Vishal L
2016-03-28 20:01 ` Verma, Vishal L
2016-03-28 20:01 ` Verma, Vishal L
2016-03-28 23:34 ` Dan Williams
2016-03-28 23:34 ` Dan Williams
2016-03-28 23:34 ` Dan Williams
2016-03-28 23:34 ` Dan Williams
2016-03-29 18:57 ` Verma, Vishal L
2016-03-29 18:57 ` Verma, Vishal L
2016-03-29 18:57 ` Verma, Vishal L
2016-03-29 18:57 ` Verma, Vishal L
2016-03-29 19:37 ` Dan Williams
2016-03-29 19:37 ` Dan Williams
2016-03-29 19:37 ` Dan Williams
2016-03-29 19:37 ` Dan Williams
2016-03-30 7:49 ` Jan Kara
2016-03-30 7:49 ` Jan Kara
2016-03-30 7:49 ` Jan Kara
2016-03-30 7:49 ` Jan Kara
2016-03-30 7:49 ` Jan Kara
2016-04-01 19:17 ` Verma, Vishal L
2016-04-01 19:17 ` Verma, Vishal L
2016-04-01 19:17 ` Verma, Vishal L
2016-04-04 12:09 ` Jan Kara
2016-04-04 12:09 ` Jan Kara
2016-04-04 12:09 ` Jan Kara
2016-04-04 12:09 ` Jan Kara
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
2016-03-24 23:17 ` Vishal Verma
2016-03-24 23:17 ` Vishal Verma
2016-03-25 10:45 ` Christoph Hellwig
2016-03-25 10:45 ` Christoph Hellwig
2016-03-25 10:45 ` Christoph Hellwig
2016-03-25 20:59 ` Verma, Vishal L
2016-03-25 20:59 ` Verma, Vishal L
2016-03-25 21:42 ` Dan Williams
2016-03-25 21:42 ` Dan Williams
2016-03-25 22:36 ` Verma, Vishal L
2016-03-25 22:36 ` Verma, Vishal L
2016-03-25 22:36 ` Verma, Vishal L
2016-03-26 16:53 ` hch
2016-03-26 16:53 ` hch
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