2024-05-07 02:35:29

by Lu Yao

Subject: [PATCH] btrfs: scrub: fix a compilation warning

The following error message is displayed:
../fs/btrfs/scrub.c:2152:9: error: ‘ret’ may be used uninitialized
in this function [-Werror=maybe-uninitialized]"

Signed-off-by: Lu Yao <[email protected]>
---
gcc version: (Debian 10.2.1-6) 10.2.1 20210110
---
fs/btrfs/scrub.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 4b22cfe9a98c..afd6932f5e89 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -2100,7 +2100,7 @@ static int scrub_simple_mirror(struct scrub_ctx *sctx,
struct btrfs_fs_info *fs_info = sctx->fs_info;
const u64 logical_end = logical_start + logical_length;
u64 cur_logical = logical_start;
- int ret;
+ int ret = 0;

/* The range must be inside the bg */
ASSERT(logical_start >= bg->start && logical_end <= bg->start + bg->length);
--
2.25.1

2024-05-08 15:35:56

by Boris Burkov

Subject: Re: [PATCH] btrfs: scrub: fix a compilation warning

On Tue, May 07, 2024 at 10:34:17AM +0800, Lu Yao wrote:
> The following error message is displayed:
> ../fs/btrfs/scrub.c:2152:9: error: ‘ret’ may be used uninitialized
> in this function [-Werror=maybe-uninitialized]"
>
> Signed-off-by: Lu Yao <[email protected]>
Reviewed-by: Boris Burkov <[email protected]>
> ---
> gcc version: (Debian 10.2.1-6) 10.2.1 20210110
> ---
> fs/btrfs/scrub.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
> index 4b22cfe9a98c..afd6932f5e89 100644
> --- a/fs/btrfs/scrub.c
> +++ b/fs/btrfs/scrub.c
> @@ -2100,7 +2100,7 @@ static int scrub_simple_mirror(struct scrub_ctx *sctx,
> struct btrfs_fs_info *fs_info = sctx->fs_info;
> const u64 logical_end = logical_start + logical_length;
> u64 cur_logical = logical_start;
> - int ret;
> + int ret = 0;
>
> /* The range must be inside the bg */
> ASSERT(logical_start >= bg->start && logical_end <= bg->start + bg->length);
> --
> 2.25.1
>