diff mbox series

[v2,5/8] btrfs: use round_down() to align block offset at btrfs_cow_block()

Message ID ec568a627d58773eb088b3ad5b1417d8ce540a9d.1695812791.git.fdmanana@suse.com (mailing list archive)
State New, archived
Headers show
Series btrfs: some fixes and cleanups around btrfs_cow_block() | expand

Commit Message

Filipe Manana Sept. 27, 2023, 11:09 a.m. UTC 
From: Filipe Manana <fdmanana@suse.com>

At btrfs_cow_block() we can use round_down() to align the extent buffer's
logical offset to the start offset of a metadata block group, instead of
the less easy to read set of bitwise operations (two plus one subtraction).
So replace the bitwise operations with a round_down() call.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
---
 fs/btrfs/ctree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index a05c9204928e..8d29b9e09286 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -712,7 +712,7 @@  int btrfs_cow_block(struct btrfs_trans_handle *trans,
 		return 0;
 	}
 
-	search_start = buf->start & ~((u64)SZ_1G - 1);
+	search_start = round_down(buf->start, SZ_1G);
 
 	/*
 	 * Before CoWing this block for later modification, check if it's