linux-kernel - [RFC PATCH v1 2/6] btrfs: Change `mount_opt` type in `struct btrfs_fs

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Date:   Sun, 26 Feb 2023 23:02:55 +0700
From:   Ammar Faizi <ammarfaizi2@...weeb.org>
To:     Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>, Tejun Heo <tj@...nel.org>
Cc:     Ammar Faizi <ammarfaizi2@...weeb.org>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Filipe Manana <fdmanana@...e.com>,
        Linux Btrfs Mailing List <linux-btrfs@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Fsdevel Mailing List <linux-fsdevel@...r.kernel.org>,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>
Subject: [RFC PATCH v1 2/6] btrfs: Change `mount_opt` type in `struct btrfs_fs_info` to `u64`

On a 32-bit Linux system, `unsigned long` is 32-bit. In preparation to
add more mount options, change the type to `u64` because the enum for
this option has reached the max 32-bit capacity.

It does not make any difference on a system where `unsigned long` is
64-bit, only needed for the 32-bit system.

Signed-off-by: Ammar Faizi <ammarfaizi2@...weeb.org>
---
 fs/btrfs/fs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/fs.h b/fs/btrfs/fs.h
index 4c477eae689148dd..6de61367b6686197 100644
--- a/fs/btrfs/fs.h
+++ b/fs/btrfs/fs.h
@@ -422,7 +422,7 @@ struct btrfs_fs_info {
 	 * required instead of the faster short fsync log commits
 	 */
 	u64 last_trans_log_full_commit;
-	unsigned long mount_opt;
+	u64 mount_opt;
 
 	unsigned long compress_type:4;
 	unsigned int compress_level;
-- 
Ammar Faizi