From: Omar Sandoval <osandov@osandov.com>
To: Nikolay Borisov <nborisov@suse.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: [PATCH] btrfs: Simplify len alignment calculation
Date: Mon, 2 Dec 2019 23:52:40 -0800 [thread overview]
Message-ID: <20191203075240.GB829117@vader> (raw)
In-Reply-To: <20191129093807.525-1-nborisov@suse.com>
On Fri, Nov 29, 2019 at 11:38:07AM +0200, Nikolay Borisov wrote:
> Use ALIGN() directly rather than achieving the same thing in a roundabout way.
> No semantic changes.
>
> Signed-off-by: Nikolay Borisov <nborisov@suse.com>
> ---
> fs/btrfs/delalloc-space.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/fs/btrfs/delalloc-space.c b/fs/btrfs/delalloc-space.c
> index 4cdac4d834f5..c08e905b0424 100644
> --- a/fs/btrfs/delalloc-space.c
> +++ b/fs/btrfs/delalloc-space.c
> @@ -142,8 +142,7 @@ int btrfs_check_data_free_space(struct inode *inode,
> int ret;
>
> /* align the range */
> - len = round_up(start + len, fs_info->sectorsize) -
> - round_down(start, fs_info->sectorsize);
> + len = ALIGN(len, fs_info->sectorsize);
Consider sectorsize = 4096, start = 4095, len = 2. This range spans two
blocks, which is what the original compuation gives. Yours returns one
block instead.
next prev parent reply other threads:[~2019-12-03 7:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-29 9:38 [PATCH] btrfs: Simplify len alignment calculation Nikolay Borisov
2019-12-03 7:52 ` Omar Sandoval [this message]
2019-12-03 8:06 ` Nikolay Borisov
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