linux-ext4 - [PATCH RFC 3/8] btrfs: use super write guard btrfs_run_defrag

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Message-Id: <20251104-work-guards-v1-3-5108ac78a171@kernel.org>
Date: Tue, 04 Nov 2025 13:12:32 +0100
From: Christian Brauner <brauner@...nel.org>
To: linux-fsdevel@...r.kernel.org
Cc: Alexander Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>, 
 linux-btrfs@...r.kernel.org, linux-ext4@...r.kernel.org, 
 linux-xfs@...r.kernel.org, Christian Brauner <brauner@...nel.org>
Subject: [PATCH RFC 3/8] btrfs: use super write guard
 btrfs_run_defrag_inode()

Signed-off-by: Christian Brauner <brauner@...nel.org>
---
 fs/btrfs/defrag.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/fs/btrfs/defrag.c b/fs/btrfs/defrag.c
index 7b277934f66f..35fb8ee164dc 100644
--- a/fs/btrfs/defrag.c
+++ b/fs/btrfs/defrag.c
@@ -254,10 +254,9 @@ static int btrfs_run_defrag_inode(struct btrfs_fs_info *fs_info,
 	range.extent_thresh = defrag->extent_thresh;
 	file_ra_state_init(ra, inode->vfs_inode.i_mapping);
 
-	sb_start_write(fs_info->sb);
-	ret = btrfs_defrag_file(inode, ra, &range, defrag->transid,
-				BTRFS_DEFRAG_BATCH);
-	sb_end_write(fs_info->sb);
+	scoped_guard(super_write, fs_info->sb)
+		ret = btrfs_defrag_file(inode, ra, &range,
+					defrag->transid, BTRFS_DEFRAG_BATCH);
 	iput(&inode->vfs_inode);
 
 	if (ret < 0)

-- 
2.47.3