[PATCH] btrfs-progs: subvol sync: fix reversed condition

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In my local change to 07cc891d1d9819d5cf0628af555e7727d289cf7b
("btrfs-progs: Simplify all-subvolumn-clean condition for
wait_for_subvolume_cleaning") that reversed the meaning of the variable
dirty -> clean, I made a mistake and broke 'subvol sync' that will not
wait as expected and ends prematurely. Zhao Lei's original patch worked.

CC: Zhao Lei <zhaolei@xxxxxxxxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
---
 cmds-subvolume.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmds-subvolume.c b/cmds-subvolume.c
index 82173c0489a9..6f8675657417 100644
--- a/cmds-subvolume.c
+++ b/cmds-subvolume.c
@@ -89,7 +89,7 @@ static int wait_for_subvolume_cleaning(int fd, int count, u64 *ids,
 				clean = 0;
 			}
 		}
-		if (clean == 0)
+		if (clean == 1)
 			break;
 		sleep(sleep_interval);
 	}
-- 
2.1.3

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