linux-kernel - [PATCH] f2fs: add support for FS_IOC

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Message-Id: <20240515081233.2463848-1-chao@kernel.org>
Date: Wed, 15 May 2024 16:12:33 +0800
From: Chao Yu <chao@...nel.org>
To: jaegeuk@...nel.org
Cc: linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org,
	Chao Yu <chao@...nel.org>
Subject: [PATCH] f2fs: add support for FS_IOC_GETFSSYSFSPATH

FS_IOC_GETFSSYSFSPATH ioctl expects sysfs sub-path of a filesystem, the
format can be "$FSTYP/$SYSFS_IDENTIFIER" under /sys/fs, it can helps to
standardizes exporting sysfs datas across filesystems.

This patch wires up FS_IOC_GETFSSYSFSPATH for f2fs, it will output
"f2fs/<dev>".

Signed-off-by: Chao Yu <chao@...nel.org>
---
 fs/f2fs/super.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index daf2c4dbe150..1f0f306cbcac 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -4481,6 +4481,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
 	sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
 		(test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
 	super_set_uuid(sb, (void *) raw_super->uuid, sizeof(raw_super->uuid));
+	super_set_sysfs_name_bdev(sb);
 	sb->s_iflags |= SB_I_CGROUPWB;
 
 	/* init f2fs-specific super block info */
-- 
2.40.1