[PATCH 6/7] btrfs: clarify reclaim sweep control flow

[Sun YangKai <sunk67188@gmail.com>]

Replace the try_again flag with will_reclaim and adjust the
to better reflect the intent of the logic. This makes the reclaim
decision easier to follow without changing behavior.

Also prepare for the next patch.

No functional change.

Signed-off-by: Sun YangKai <sunk67188@gmail.com>
---
 fs/btrfs/space-info.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c
index cf2c4b7105cf..b6ec09aea64f 100644
--- a/fs/btrfs/space-info.c
+++ b/fs/btrfs/space-info.c
@@ -2083,7 +2083,7 @@ static void do_reclaim_sweep(struct btrfs_space_info *space_info, int raid)
 {
 	struct btrfs_block_group *bg;
 	int thresh_pct;
-	bool try_again = true;
+	bool will_reclaim = false;
 	bool urgent;
 
 	spin_lock(&space_info->lock);
@@ -2101,7 +2101,7 @@ static void do_reclaim_sweep(struct btrfs_space_info *space_info, int raid)
 		spin_lock(&bg->lock);
 		thresh = mult_perc(bg->length, thresh_pct);
 		if (bg->used < thresh && bg->reclaim_mark) {
-			try_again = false;
+			will_reclaim = true;
 			reclaim = true;
 		}
 		bg->reclaim_mark = true;
@@ -2118,8 +2118,8 @@ static void do_reclaim_sweep(struct btrfs_space_info *space_info, int raid)
 	 * If we have any staler groups, we don't touch the fresher ones, but if we
 	 * really need a block group, do take a fresh one.
 	 */
-	if (try_again && urgent) {
-		try_again = false;
+	if (!will_reclaim && urgent) {
+		urgent = false;
 		goto again;
 	}
 
-- 
2.51.2