* + virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch added to mm-unstable branch
@ 2024-02-15 20:06 Andrew Morton
0 siblings, 0 replies; 3+ messages in thread
From: Andrew Morton @ 2024-02-15 20:06 UTC (permalink / raw)
To: mm-commits, willy, vishal.l.verma, snitzer, mpatocka, lkp, linux,
hch, hca, dm-devel, david, dave.jiang, dan.j.williams, arnd, agk,
mathieu.desnoyers, akpm
The patch titled
Subject: virtio: Treat alloc_dax() -EOPNOTSUPP failure as non-fatal
has been added to the -mm mm-unstable branch. Its filename is
virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Subject: virtio: Treat alloc_dax() -EOPNOTSUPP failure as non-fatal
Date: Thu, 15 Feb 2024 09:46:30 -0500
In preparation for checking whether the architecture has data cache
aliasing within alloc_dax(), modify the error handling of virtio
virtio_fs_setup_dax() to treat alloc_dax() -EOPNOTSUPP failure as
non-fatal.
Link: https://lkml.kernel.org/r/20240215144633.96437-7-mathieu.desnoyers@efficios.com
Co-developed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Fixes: d92576f1167c ("dax: does not work correctly with virtual aliasing caches")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Mike Snitzer <snitzer@kernel.org>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: kernel test robot <lkp@intel.com>
Cc: Michael Sclafani <dm-devel@lists.linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
fs/fuse/virtio_fs.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
--- a/fs/fuse/virtio_fs.c~virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal
+++ a/fs/fuse/virtio_fs.c
@@ -16,6 +16,7 @@
#include <linux/fs_context.h>
#include <linux/fs_parser.h>
#include <linux/highmem.h>
+#include <linux/cleanup.h>
#include <linux/uio.h>
#include "fuse_i.h"
@@ -795,8 +796,11 @@ static void virtio_fs_cleanup_dax(void *
put_dax(dax_dev);
}
+DEFINE_FREE(cleanup_dax, struct dax_dev *, if (!IS_ERR_OR_NULL(_T)) virtio_fs_cleanup_dax(_T))
+
static int virtio_fs_setup_dax(struct virtio_device *vdev, struct virtio_fs *fs)
{
+ struct dax_device *dax_dev __free(cleanup_dax) = NULL;
struct virtio_shm_region cache_reg;
struct dev_pagemap *pgmap;
bool have_cache;
@@ -804,6 +808,12 @@ static int virtio_fs_setup_dax(struct vi
if (!IS_ENABLED(CONFIG_FUSE_DAX))
return 0;
+ dax_dev = alloc_dax(fs, &virtio_fs_dax_ops);
+ if (IS_ERR(dax_dev)) {
+ int rc = PTR_ERR(dax_dev);
+ return rc == -EOPNOTSUPP ? 0 : rc;
+ }
+
/* Get cache region */
have_cache = virtio_get_shm_region(vdev, &cache_reg,
(u8)VIRTIO_FS_SHMCAP_ID_CACHE);
@@ -849,10 +859,7 @@ static int virtio_fs_setup_dax(struct vi
dev_dbg(&vdev->dev, "%s: window kaddr 0x%px phys_addr 0x%llx len 0x%llx\n",
__func__, fs->window_kaddr, cache_reg.addr, cache_reg.len);
- fs->dax_dev = alloc_dax(fs, &virtio_fs_dax_ops);
- if (IS_ERR(fs->dax_dev))
- return PTR_ERR(fs->dax_dev);
-
+ fs->dax_dev = no_free_ptr(dax_dev);
return devm_add_action_or_reset(&vdev->dev, virtio_fs_cleanup_dax,
fs->dax_dev);
}
_
Patches currently in -mm which might be from mathieu.desnoyers@efficios.com are
nvdimm-pmem-fix-leak-on-dax_add_host-failure.patch
dax-add-empty-static-inline-for-config_dax=n.patch
dax-alloc_dax-return-err_ptr-eopnotsupp-for-config_dax=n.patch
nvdimm-pmem-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
dm-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
dcssblk-handle-alloc_dax-eopnotsupp-failure.patch
virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
dax-check-for-data-cache-aliasing-at-runtime.patch
introduce-cpu_dcache_is_aliasing-across-all-architectures.patch
dax-fix-incorrect-list-of-data-cache-aliasing-architectures.patch
^ permalink raw reply [flat|nested] 3+ messages in thread* + virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch added to mm-unstable branch
@ 2024-02-12 22:30 Andrew Morton
0 siblings, 0 replies; 3+ messages in thread
From: Andrew Morton @ 2024-02-12 22:30 UTC (permalink / raw)
To: mm-commits, willy, vishal.l.verma, torvalds, snitzer, mpatocka,
linux, dm-devel, david, dave.jiang, dan.j.williams, arnd, agk,
mathieu.desnoyers, akpm
The patch titled
Subject: virtio: treat alloc_dax() -EOPNOTSUPP failure as non-fatal
has been added to the -mm mm-unstable branch. Its filename is
virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Subject: virtio: treat alloc_dax() -EOPNOTSUPP failure as non-fatal
Date: Mon, 12 Feb 2024 11:30:58 -0500
In preparation for checking whether the architecture has data cache
aliasing within alloc_dax(), modify the error handling of virtio
virtio_fs_setup_dax() to treat alloc_dax() -EOPNOTSUPP failure as
non-fatal.
Link: https://lkml.kernel.org/r/20240212163101.19614-6-mathieu.desnoyers@efficios.com
Co-developed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Fixes: d92576f1167c ("dax: does not work correctly with virtual aliasing caches")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Mike Snitzer <snitzer@kernel.org>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Michael Sclafani <dm-devel@lists.linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
fs/fuse/virtio_fs.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
--- a/fs/fuse/virtio_fs.c~virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal
+++ a/fs/fuse/virtio_fs.c
@@ -16,6 +16,7 @@
#include <linux/fs_context.h>
#include <linux/fs_parser.h>
#include <linux/highmem.h>
+#include <linux/cleanup.h>
#include <linux/uio.h>
#include "fuse_i.h"
@@ -795,8 +796,11 @@ static void virtio_fs_cleanup_dax(void *
put_dax(dax_dev);
}
+DEFINE_FREE(cleanup_dax, struct dax_dev *, if (!IS_ERR(_T)) virtio_fs_cleanup_dax(_T))
+
static int virtio_fs_setup_dax(struct virtio_device *vdev, struct virtio_fs *fs)
{
+ struct dax_device *dax_dev __free(cleanup_dax) = ERR_PTR(-EOPNOTSUPP);
struct virtio_shm_region cache_reg;
struct dev_pagemap *pgmap;
bool have_cache;
@@ -804,6 +808,12 @@ static int virtio_fs_setup_dax(struct vi
if (!IS_ENABLED(CONFIG_FUSE_DAX))
return 0;
+ dax_dev = alloc_dax(fs, &virtio_fs_dax_ops);
+ if (IS_ERR(dax_dev)) {
+ int rc = PTR_ERR(dax_dev);
+ return rc == -EOPNOTSUPP ? 0 : rc;
+ }
+
/* Get cache region */
have_cache = virtio_get_shm_region(vdev, &cache_reg,
(u8)VIRTIO_FS_SHMCAP_ID_CACHE);
@@ -849,10 +859,7 @@ static int virtio_fs_setup_dax(struct vi
dev_dbg(&vdev->dev, "%s: window kaddr 0x%px phys_addr 0x%llx len 0x%llx\n",
__func__, fs->window_kaddr, cache_reg.addr, cache_reg.len);
- fs->dax_dev = alloc_dax(fs, &virtio_fs_dax_ops);
- if (IS_ERR(fs->dax_dev))
- return PTR_ERR(fs->dax_dev);
-
+ fs->dax_dev = no_free_ptr(dax_dev);
return devm_add_action_or_reset(&vdev->dev, virtio_fs_cleanup_dax,
fs->dax_dev);
}
_
Patches currently in -mm which might be from mathieu.desnoyers@efficios.com are
nvdimm-pmem-fix-leak-on-dax_add_host-failure.patch
dax-alloc_dax-return-err_ptr-eopnotsupp-for-config_dax=n.patch
nvdimm-pmem-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
dm-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
dcssblk-handle-alloc_dax-eopnotsupp-failure.patch
virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
dax-check-for-data-cache-aliasing-at-runtime.patch
introduce-cpu_dcache_is_aliasing-across-all-architectures.patch
dax-fix-incorrect-list-of-data-cache-aliasing-architectures.patch
^ permalink raw reply [flat|nested] 3+ messages in thread* + virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch added to mm-unstable branch
@ 2024-02-08 21:27 Andrew Morton
0 siblings, 0 replies; 3+ messages in thread
From: Andrew Morton @ 2024-02-08 21:27 UTC (permalink / raw)
To: mm-commits, willy, vishal.l.verma, torvalds, snitzer, mpatocka,
linux, david, dave.jiang, dan.j.williams, arnd, agk,
mathieu.desnoyers, akpm
The patch titled
Subject: virtio: treat alloc_dax() -EOPNOTSUPP failure as non-fatal
has been added to the -mm mm-unstable branch. Its filename is
virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Subject: virtio: treat alloc_dax() -EOPNOTSUPP failure as non-fatal
Date: Thu, 8 Feb 2024 13:49:06 -0500
In preparation for checking whether the architecture has data cache
aliasing within alloc_dax(), modify the error handling of virtio
virtio_fs_setup_dax() to treat alloc_dax() -EOPNOTSUPP failure as
non-fatal.
For the transition, consider that alloc_dax() returning NULL is the
same as returning -EOPNOTSUPP.
Link: https://lkml.kernel.org/r/20240208184913.484340-6-mathieu.desnoyers@efficios.com
Fixes: d92576f1167c ("dax: does not work correctly with virtual aliasing caches")
Co-developed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Mike Snitzer <snitzer@kernel.org>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
fs/fuse/virtio_fs.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
--- a/fs/fuse/virtio_fs.c~virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal
+++ a/fs/fuse/virtio_fs.c
@@ -16,6 +16,7 @@
#include <linux/fs_context.h>
#include <linux/fs_parser.h>
#include <linux/highmem.h>
+#include <linux/cleanup.h>
#include <linux/uio.h>
#include "fuse_i.h"
@@ -795,8 +796,11 @@ static void virtio_fs_cleanup_dax(void *
put_dax(dax_dev);
}
+DEFINE_FREE(cleanup_dax, struct dax_dev *, if (!IS_ERR_OR_NULL(_T)) virtio_fs_cleanup_dax(_T))
+
static int virtio_fs_setup_dax(struct virtio_device *vdev, struct virtio_fs *fs)
{
+ struct dax_device *dax_dev __free(cleanup_dax) = NULL;
struct virtio_shm_region cache_reg;
struct dev_pagemap *pgmap;
bool have_cache;
@@ -804,6 +808,12 @@ static int virtio_fs_setup_dax(struct vi
if (!IS_ENABLED(CONFIG_FUSE_DAX))
return 0;
+ dax_dev = alloc_dax(fs, &virtio_fs_dax_ops);
+ if (IS_ERR_OR_NULL(dax_dev)) {
+ int rc = IS_ERR(dax_dev) ? PTR_ERR(dax_dev) : -EOPNOTSUPP;
+ return rc == -EOPNOTSUPP ? 0 : rc;
+ }
+
/* Get cache region */
have_cache = virtio_get_shm_region(vdev, &cache_reg,
(u8)VIRTIO_FS_SHMCAP_ID_CACHE);
@@ -849,10 +859,7 @@ static int virtio_fs_setup_dax(struct vi
dev_dbg(&vdev->dev, "%s: window kaddr 0x%px phys_addr 0x%llx len 0x%llx\n",
__func__, fs->window_kaddr, cache_reg.addr, cache_reg.len);
- fs->dax_dev = alloc_dax(fs, &virtio_fs_dax_ops);
- if (IS_ERR(fs->dax_dev))
- return PTR_ERR(fs->dax_dev);
-
+ fs->dax_dev = no_free_ptr(dax_dev);
return devm_add_action_or_reset(&vdev->dev, virtio_fs_cleanup_dax,
fs->dax_dev);
}
_
Patches currently in -mm which might be from mathieu.desnoyers@efficios.com are
nvdimm-pmem-fix-leak-on-dax_add_host-failure.patch
nvdimm-pmem-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
dm-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
dcssblk-handle-alloc_dax-eopnotsupp-failure.patch
virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch
dax-check-for-data-cache-aliasing-at-runtime.patch
introduce-cpu_dcache_is_aliasing-across-all-architectures.patch
dax-fix-incorrect-list-of-data-cache-aliasing-architectures.patch
nvdimm-pmem-cleanup-alloc_dax-error-handling.patch
dm-cleanup-alloc_dax-error-handling.patch
dcssblk-cleanup-alloc_dax-error-handling.patch
virtio-cleanup-alloc_dax-error-handling.patch
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2024-02-15 20:06 UTC | newest]
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2024-02-12 22:30 Andrew Morton
2024-02-08 21:27 Andrew Morton
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