The patch titled
Subject: virtio: cleanup alloc_dax() error handling
has been added to the -mm mm-unstable branch. Its filename is
virtio-cleanup-alloc_dax-error-handling.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/virtio-cleanup-alloc_dax-error-handling.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Subject: virtio: cleanup alloc_dax() error handling
Date: Thu, 8 Feb 2024 13:49:13 -0500
Now that alloc_dax() returns ERR_PTR(-EOPNOTSUPP) rather than NULL, the
callers do not have to handle NULL return values anymore.
Link: https://lkml.kernel.org/r/20240208184913.484340-13-mathieu.desnoyers@xxxxxxxxxxxx
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Cc: Alasdair Kergon <agk@xxxxxxxxxx>
Cc: Mike Snitzer <snitzer@xxxxxxxxxx>
Cc: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Vishal Verma <vishal.l.verma@xxxxxxxxx>
Cc: Dave Jiang <dave.jiang@xxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/fuse/virtio_fs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/fuse/virtio_fs.c~virtio-cleanup-alloc_dax-error-handling
+++ a/fs/fuse/virtio_fs.c
@@ -809,8 +809,8 @@ static int virtio_fs_setup_dax(struct vi
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;
+ if (IS_ERR(dax_dev)) {
+ int rc = PTR_ERR(dax_dev);
return rc == -EOPNOTSUPP ? 0 : rc;
}
_
Patches currently in -mm which might be from mathieu.desnoyers@xxxxxxxxxxxx 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
