From: Filipe Manana Date: Wed, 27 Sep 2023 11:09:25 +0000 (+0100) Subject: btrfs: use round_down() to align block offset at btrfs_cow_block() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b8bf4e4d6ae9bbd485321e81b76cfaf07bf5bedd;p=linux.git btrfs: use round_down() to align block offset at btrfs_cow_block() 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 Reviewed-by: David Sterba Signed-off-by: David Sterba --- diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 49232b5263901..e1af5cc698f93 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -718,7 +718,7 @@ 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