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From: Sun YangKai <sunk67188@gmail.com>
To: linux-btrfs@vger.kernel.org
Cc: David Sterba <dsterba@suse.cz>, Sun YangKai <sunk67188@gmail.com>
Subject: [PATCH v2 3/3] btrfs: avoid redundant slot assignment in btrfs_search_forward()
Date: Tue, 11 Mar 2025 16:13:14 +0800	[thread overview]
Message-ID: <20250311081317.13860-4-sunk67188@gmail.com> (raw)
In-Reply-To: <20250311081317.13860-1-sunk67188@gmail.com>

Moving `path->slots[level] = slot` before the condition check to prevent
duplicate assignment. Previously, the slot was set both inside and after
the `slot >= nritems` block with no change in its value, which
is unnecessary.

Signed-off-by: Sun YangKai <sunk67188@gmail.com>
---
 fs/btrfs/ctree.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 5f7c937b0f4d..c982960d8a91 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -4668,8 +4668,8 @@ int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key,
 		 * we didn't find a candidate key in this node, walk forward
 		 * and find another one
 		 */
+		path->slots[level] = slot;
 		if (slot >= nritems) {
-			path->slots[level] = slot;
 			sret = btrfs_find_next_key(root, path, min_key, level,
 						  min_trans);
 			if (sret == 0) {
@@ -4679,7 +4679,6 @@ int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key,
 				goto out;
 			}
 		}
-		path->slots[level] = slot;
 		if (level == path->lowest_level) {
 			ret = 0;
 			/* Save our key for returning back. */
-- 
2.48.1


  parent reply	other threads:[~2025-03-11  8:13 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-11  8:13 [PATCH v2 0/3] btrfs: random code cleanup Sun YangKai
2025-03-11  8:13 ` [PATCH v2 1/3] btrfs: simplify the return value handling in search_ioctl() Sun YangKai
2025-03-11  8:13 ` [PATCH v2 2/3] btrfs: remove the unnecessary local variable in btrfs_search_forward() Sun YangKai
2025-03-11  8:13 ` Sun YangKai [this message]
2025-03-11 19:07 ` [PATCH v2 0/3] btrfs: random code cleanup David Sterba

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