[PATCH 1/3] btrfs: narrow loop variable scope in copy_to_sk()

[Sun YangKai <sunk67188@gmail.com>]

The loop variable 'i' is only used in the for loop, so move its
declaration into the loop header to reduce its scope and improve
readability.

Signed-off-by: Sun YangKai <sunk67188@gmail.com>
---
 fs/btrfs/ioctl.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 913acef3f0a9..10c243d32b34 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1485,7 +1485,6 @@ static noinline int copy_to_sk(struct btrfs_path *path,
 	unsigned long item_off;
 	unsigned long item_len;
 	int nritems;
-	int i;
 	int slot;
 	int ret = 0;
 
@@ -1493,13 +1492,12 @@ static noinline int copy_to_sk(struct btrfs_path *path,
 	slot = path->slots[0];
 	nritems = btrfs_header_nritems(leaf);
 
-	if (btrfs_header_generation(leaf) > sk->max_transid) {
-		i = nritems;
+	if (btrfs_header_generation(leaf) > sk->max_transid)
 		goto advance_key;
-	}
+
 	found_transid = btrfs_header_generation(leaf);
 
-	for (i = slot; i < nritems; i++) {
+	for (int i = slot; i < nritems; i++) {
 		item_off = btrfs_item_ptr_offset(leaf, i);
 		item_len = btrfs_item_size(leaf, i);
 
-- 
2.49.0