linux-kernel - [PATCH 12/13] ext4: flag as supporting FOP

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Message-ID: <20241108174505.1214230-13-axboe@kernel.dk>
Date: Fri,  8 Nov 2024 10:43:35 -0700
From: Jens Axboe <axboe@...nel.dk>
To: linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org
Cc: hannes@...xchg.org,
	clm@...a.com,
	linux-kernel@...r.kernel.org,
	Jens Axboe <axboe@...nel.dk>
Subject: [PATCH 12/13] ext4: flag as supporting FOP_UNCACHED

ext4 uses the generic read/write paths, and can fully support
FOP_UNCACHED. Set the flag to indicate support, enabling use of
RWF_UNCACHED.

Signed-off-by: Jens Axboe <axboe@...nel.dk>
---
 fs/ext4/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index f14aed14b9cf..0ef39d738598 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -944,7 +944,7 @@ const struct file_operations ext4_file_operations = {
 	.splice_write	= iter_file_splice_write,
 	.fallocate	= ext4_fallocate,
 	.fop_flags	= FOP_MMAP_SYNC | FOP_BUFFER_RASYNC |
-			  FOP_DIO_PARALLEL_WRITE,
+			  FOP_DIO_PARALLEL_WRITE | FOP_UNCACHED,
 };
 
 const struct inode_operations ext4_file_inode_operations = {
-- 
2.45.2