From: Anand Jain <anand.jain@oracle.com>
Date: Tue, 20 Nov 2018 08:12:57 +0000 (+0800)
Subject: btrfs: balance: print to system log when balance ends or is paused
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=7333bd02dcb7cefa91eb94efb8e7578ec764145c;p=openwrt%2Fstaging%2Fblogic.git

btrfs: balance: print to system log when balance ends or is paused

Print a kernel log message when the balance ends, either for cancel or
completed or if it is paused.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index cdba4f03d465..2085d4d3a6fe 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -4287,6 +4287,13 @@ int btrfs_balance(struct btrfs_fs_info *fs_info,
 	ret = __btrfs_balance(fs_info);
 
 	mutex_lock(&fs_info->balance_mutex);
+	if (ret == -ECANCELED && atomic_read(&fs_info->balance_pause_req))
+		btrfs_info(fs_info, "balance: paused");
+	else if (ret == -ECANCELED && atomic_read(&fs_info->balance_cancel_req))
+		btrfs_info(fs_info, "balance: canceled");
+	else
+		btrfs_info(fs_info, "balance: ended with status: %d", ret);
+
 	clear_bit(BTRFS_FS_BALANCE_RUNNING, &fs_info->flags);
 
 	if (bargs) {