From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: Dan Williams <dan.j.williams@intel.com>,
Vishal Verma <vishal.l.verma@intel.com>,
Dave Jiang <dave.jiang@intel.com>
Cc: linux-kernel@vger.kernel.org,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Jan Kara <jack@suse.com>,
linux-ext4@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-mm@kvack.org, linux-arch@vger.kernel.org,
Matthew Wilcox <willy@infradead.org>,
nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org
Subject: [RFC PATCH 4/7] ext2: Use dax_is_supported()
Date: Mon, 29 Jan 2024 16:06:28 -0500 [thread overview]
Message-ID: <20240129210631.193493-5-mathieu.desnoyers@efficios.com> (raw)
In-Reply-To: <20240129210631.193493-1-mathieu.desnoyers@efficios.com>
Use dax_is_supported() to validate whether the architecture has
virtually aliased caches at mount time.
This is relevant for architectures which require a dynamic check
to validate whether they have virtually aliased data caches
(ARCH_HAS_CACHE_ALIASING_DYNAMIC=y).
Fixes: d92576f1167c ("dax: does not work correctly with virtual aliasing caches")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Jan Kara <jack@suse.com>
Cc: linux-ext4@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-mm@kvack.org
Cc: linux-arch@vger.kernel.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: nvdimm@lists.linux.dev
Cc: linux-cxl@vger.kernel.org
---
fs/ext2/super.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 01f9addc8b1f..0398e7a90eb6 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -585,13 +585,13 @@ static int parse_options(char *options, struct super_block *sb,
set_opt(opts->s_mount_opt, XIP);
fallthrough;
case Opt_dax:
-#ifdef CONFIG_FS_DAX
- ext2_msg(sb, KERN_WARNING,
- "DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
- set_opt(opts->s_mount_opt, DAX);
-#else
- ext2_msg(sb, KERN_INFO, "dax option not supported");
-#endif
+ if (dax_is_supported()) {
+ ext2_msg(sb, KERN_WARNING,
+ "DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
+ set_opt(opts->s_mount_opt, DAX);
+ } else {
+ ext2_msg(sb, KERN_INFO, "dax option not supported");
+ }
break;
#if defined(CONFIG_QUOTA)
--
2.39.2
next prev parent reply other threads:[~2024-01-29 21:06 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-29 21:06 [RFC PATCH 0/7] Introduce cache_is_aliasing() to fix DAX regression Mathieu Desnoyers
2024-01-29 21:06 ` [RFC PATCH 1/7] Introduce cache_is_aliasing() across all architectures Mathieu Desnoyers
2024-01-29 21:06 ` [RFC PATCH 2/7] dax: Fix incorrect list of cache aliasing architectures Mathieu Desnoyers
2024-01-29 21:06 ` [RFC PATCH 3/7] erofs: Use dax_is_supported() Mathieu Desnoyers
2024-01-29 21:06 ` Mathieu Desnoyers [this message]
2024-01-30 11:33 ` [RFC PATCH 4/7] ext2: " Jan Kara
2024-01-30 15:21 ` Mathieu Desnoyers
2024-01-29 21:06 ` [RFC PATCH 5/7] ext4: " Mathieu Desnoyers
2024-01-29 21:06 ` [RFC PATCH 6/7] fuse: Introduce fuse_dax_is_supported() Mathieu Desnoyers
2024-01-29 21:06 ` [RFC PATCH 7/7] xfs: Use dax_is_supported() Mathieu Desnoyers
2024-01-30 2:38 ` Dave Chinner
2024-01-30 15:19 ` Mathieu Desnoyers
2024-01-29 21:22 ` [RFC PATCH 0/7] Introduce cache_is_aliasing() to fix DAX regression Dan Williams
2024-01-30 15:14 ` Mathieu Desnoyers
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