[PATCH] btrfs-progs: check: initialize qgroup_item_count in earlier stage

[Naohiro Aota <naohiro.aota@wdc.com>]

"btrfsck -Q" segfaults because it does not call qgroup_set_item_count_ptr()
properly:

  # btrfsck -Q /dev/sdk
  Opening filesystem to check...
  Checking filesystem on /dev/sdk
  UUID: 34a35bbc-43f8-40f0-8043-65ed33f2e6c3
  Print quota groups for /dev/sdk
  UUID: 34a35bbc-43f8-40f0-8043-65ed33f2e6c3
  Segmentation fault (core dumped)

Since "struct task_ctx ctx" is global, we can just move
qgroup_set_item_count_ptr() much earlier stage in the check process to
avoid to forget initializing it.

Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
---
 check/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/check/main.c b/check/main.c
index bb57933b83fc..7248a8209532 100644
--- a/check/main.c
+++ b/check/main.c
@@ -9965,6 +9965,7 @@ static int cmd_check(const struct cmd_struct *cmd, int argc, char **argv)
 
 	radix_tree_init();
 	cache_tree_init(&root_cache);
+	qgroup_set_item_count_ptr(&ctx.item_count);
 
 	ret = check_mounted(argv[optind]);
 	if (!force) {
@@ -10291,7 +10292,6 @@ static int cmd_check(const struct cmd_struct *cmd, int argc, char **argv)
 	}
 
 	if (info->quota_enabled) {
-		qgroup_set_item_count_ptr(&ctx.item_count);
 		if (!ctx.progress_enabled) {
 			fprintf(stderr, "[7/7] checking quota groups\n");
 		} else {
-- 
2.22.0