[PATCH] btrfs-progs: check: add experimental flag for lowmem mode

[David Disseldorp <ddiss@suse.de>]

The experimental flag is already carried in the manpage, but was removed
from the btrfs check usage message as part of refactoring via
87c1bd13c1fca430c3dbf0da62e9aa33bde609c8. Add it back.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
---
 check/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/check/main.c b/check/main.c
index 3190b5d4..9aca0c09 100644
--- a/check/main.c
+++ b/check/main.c
@@ -9386,7 +9386,7 @@ const char * const cmd_check_usage[] = {
 	"                            original - read inodes and extents to memory (requires",
 	"                                       more memory, does less IO)",
 	"                            lowmem   - try to use less memory but read blocks again",
-	"                                       when needed",
+	"                                       when needed (experimental)",
 	"--check-data-csum           verify checksums of data blocks",
 	"-Q|--qgroup-report          print a report on qgroup consistency",
 	"-E|--subvol-extents <subvolid>",
-- 
2.13.7