From 4808cb5b98b436f1110d83c65541dd43beb45f63 Mon Sep 17 00:00:00 2001 From: Zhang Yi Date: Tue, 12 Apr 2022 22:53:20 +0800 Subject: [PATCH] ext4: add unmount filesystem message Now that we have kernel message at mount time, system administrator could acquire the mount time, device and options easily. But we don't have corresponding unmounting message at umount time, so we cannot know if someone umount a filesystem easily. Some of the modern filesystems (e.g. xfs) have the umounting kernel message, so add one for ext4 filesystem for convenience. EXT4-fs (sdb): mounted filesystem with ordered data mode. Quota mode: none. EXT4-fs (sdb): unmounting filesystem. Signed-off-by: Zhang Yi Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20220412145320.2669897-1-yi.zhang@huawei.com Signed-off-by: Theodore Ts'o --- fs/ext4/super.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index b70ab3d3165d..b511203f7111 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1211,6 +1211,9 @@ static void ext4_put_super(struct super_block *sb) */ ext4_unregister_sysfs(sb); + if (___ratelimit(&ext4_mount_msg_ratelimit, "EXT4-fs unmount")) + ext4_msg(sb, KERN_INFO, "unmounting filesystem."); + ext4_unregister_li_request(sb); ext4_quota_off_umount(sb);