2018-01-17 09:52:45

by Colin King

Subject: [PATCH] cifs: remove redundant duplicated assignment of pointer 'node'

From: Colin Ian King <[email protected]>

Node is assigned twice to rb_first(root), first during declaration
time and second after a taking a spin lock, so we have a duplicated
assignment. Remove the first assignment because it is redundant and
also not protected by the spin lock.

Cleans up clang warning:
fs/cifs/connect.c:4435:18: warning: Value stored to 'node' during
its initialization is never read

Signed-off-by: Colin Ian King <[email protected]>
---
fs/cifs/connect.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 0efd22e75ac7..63c5d85fe25e 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -4432,7 +4432,7 @@ cifs_prune_tlinks(struct work_struct *work)
struct cifs_sb_info *cifs_sb = container_of(work, struct cifs_sb_info,
prune_tlinks.work);
struct rb_root *root = &cifs_sb->tlink_tree;
- struct rb_node *node = rb_first(root);
+ struct rb_node *node;
struct rb_node *tmp;
struct tcon_link *tlink;

--
2.15.1

2018-01-17 23:12:45

by Leif Sahlberg

Subject: Re: [PATCH] cifs: remove redundant duplicated assignment of pointer 'node'

Reviewed-by: Ronnie Sahlberg <[email protected]>


----- Original Message -----
From: "Colin King" <[email protected]>
To: "Steve French" <[email protected]>, [email protected], [email protected]
Cc: [email protected], [email protected]
Sent: Wednesday, 17 January, 2018 8:52:39 PM
Subject: [PATCH] cifs: remove redundant duplicated assignment of pointer 'node'

From: Colin Ian King <[email protected]>

Node is assigned twice to rb_first(root), first during declaration
time and second after a taking a spin lock, so we have a duplicated
assignment. Remove the first assignment because it is redundant and
also not protected by the spin lock.

Cleans up clang warning:
fs/cifs/connect.c:4435:18: warning: Value stored to 'node' during
its initialization is never read

Signed-off-by: Colin Ian King <[email protected]>
---
fs/cifs/connect.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 0efd22e75ac7..63c5d85fe25e 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -4432,7 +4432,7 @@ cifs_prune_tlinks(struct work_struct *work)
struct cifs_sb_info *cifs_sb = container_of(work, struct cifs_sb_info,
prune_tlinks.work);
struct rb_root *root = &cifs_sb->tlink_tree;
- struct rb_node *node = rb_first(root);
+ struct rb_node *node;
struct rb_node *tmp;
struct tcon_link *tlink;

--
2.15.1

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2018-01-18 16:32:40

by Steve French

Subject: Re: [PATCH] cifs: remove redundant duplicated assignment of pointer 'node'

merged into cifs-2.6.git for-next

thx

On Wed, Jan 17, 2018 at 5:11 PM, Ronnie Sahlberg <[email protected]> wrote:
> Reviewed-by: Ronnie Sahlberg <[email protected]>
>
>
> ----- Original Message -----
> From: "Colin King" <[email protected]>
> To: "Steve French" <[email protected]>, [email protected], [email protected]
> Cc: [email protected], [email protected]
> Sent: Wednesday, 17 January, 2018 8:52:39 PM
> Subject: [PATCH] cifs: remove redundant duplicated assignment of pointer 'node'
>
> From: Colin Ian King <[email protected]>
>
> Node is assigned twice to rb_first(root), first during declaration
> time and second after a taking a spin lock, so we have a duplicated
> assignment. Remove the first assignment because it is redundant and
> also not protected by the spin lock.
>
> Cleans up clang warning:
> fs/cifs/connect.c:4435:18: warning: Value stored to 'node' during
> its initialization is never read
>
> Signed-off-by: Colin Ian King <[email protected]>
> ---
> fs/cifs/connect.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
> index 0efd22e75ac7..63c5d85fe25e 100644
> --- a/fs/cifs/connect.c
> +++ b/fs/cifs/connect.c
> @@ -4432,7 +4432,7 @@ cifs_prune_tlinks(struct work_struct *work)
> struct cifs_sb_info *cifs_sb = container_of(work, struct cifs_sb_info,
> prune_tlinks.work);
> struct rb_root *root = &cifs_sb->tlink_tree;
> - struct rb_node *node = rb_first(root);
> + struct rb_node *node;
> struct rb_node *tmp;
> struct tcon_link *tlink;
>
> --
> 2.15.1
>
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--
Thanks,

Steve