* [PATCH] configfs: Remove redundant initialization of 'len'
@ 2021-05-12 9:17 Yang Li
2021-05-25 8:31 ` Christoph Hellwig
0 siblings, 1 reply; 2+ messages in thread
From: Yang Li @ 2021-05-12 9:17 UTC (permalink / raw)
To: jlbec; +Cc: hch, nathan, ndesaulniers, linux-kernel, clang-built-linux, Yang Li
variable 'len' is being initialized however
this value is never read as 'len' is assigned a new
value in if statement. Remove the redundant assignment.
At the same time, adjust the declarations order of
variables to keep the "upside-down x-mas tree" look of them.
Cleans up clang warning:
fs/configfs/file.c:147:10: warning: Value stored to 'len' during its
initialization is never read [clang-analyzer-deadcode.DeadStores]
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Fixes: 'commit fa60ce2cb450 ("treewide: remove editor modelines and cruft")'
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
---
fs/configfs/file.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/configfs/file.c b/fs/configfs/file.c
index e26060d..1551b3d 100644
--- a/fs/configfs/file.c
+++ b/fs/configfs/file.c
@@ -141,10 +141,10 @@ static int fill_read_buffer(struct file *file, struct configfs_buffer *buffer)
configfs_read_bin_file(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
- struct configfs_fragment *frag = to_frag(file);
struct configfs_buffer *buffer = file->private_data;
+ struct configfs_fragment *frag = to_frag(file);
ssize_t retval = 0;
- ssize_t len = min_t(size_t, count, PAGE_SIZE);
+ ssize_t len;
mutex_lock(&buffer->mutex);
--
1.8.3.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] configfs: Remove redundant initialization of 'len'
2021-05-12 9:17 [PATCH] configfs: Remove redundant initialization of 'len' Yang Li
@ 2021-05-25 8:31 ` Christoph Hellwig
0 siblings, 0 replies; 2+ messages in thread
From: Christoph Hellwig @ 2021-05-25 8:31 UTC (permalink / raw)
To: Yang Li; +Cc: jlbec, hch, nathan, ndesaulniers, linux-kernel, clang-built-linux
Thanks, but this isn't needed anymore with the patch from Bart that
implements ->read_iter instead of ->read.
^ permalink raw reply [flat|nested] 2+ messages in thread
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