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* [PATCH v2] ext4: Remove unused assignments
@ 2021-11-04  6:40 cgel.zte
  2022-01-05 23:39 ` Theodore Ts'o
  0 siblings, 1 reply; 2+ messages in thread
From: cgel.zte @ 2021-11-04  6:40 UTC (permalink / raw)
  To: Theodore Ts'o
  Cc: Andreas Dilger, linux-ext4, linux-kernel, luo penghao, Zeal Robot

From: luo penghao <luo.penghao@zte.com.cn>

The eh assignment in these two places is meaningless, because the
function will goto to merge, which will not use eh.

The clang_analyzer complains as follows:

fs/ext4/extents.c:1988:4 warning:
fs/ext4/extents.c:2016:4 warning:

Value stored to 'eh' is never read

change in v2:

Repair the sending email box

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: luo penghao <luo.penghao@zte.com.cn>
---
 fs/ext4/extents.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index b1933e3..9ed8a15 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -1986,7 +1986,6 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode *inode,
 					+ ext4_ext_get_actual_len(newext));
 			if (unwritten)
 				ext4_ext_mark_unwritten(ex);
-			eh = path[depth].p_hdr;
 			nearex = ex;
 			goto merge;
 		}
@@ -2015,7 +2014,6 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode *inode,
 					+ ext4_ext_get_actual_len(newext));
 			if (unwritten)
 				ext4_ext_mark_unwritten(ex);
-			eh = path[depth].p_hdr;
 			nearex = ex;
 			goto merge;
 		}
-- 
2.15.2



^ permalink raw reply related	[flat|nested] 2+ messages in thread

* Re: [PATCH v2] ext4: Remove unused assignments
  2021-11-04  6:40 [PATCH v2] ext4: Remove unused assignments cgel.zte
@ 2022-01-05 23:39 ` Theodore Ts'o
  0 siblings, 0 replies; 2+ messages in thread
From: Theodore Ts'o @ 2022-01-05 23:39 UTC (permalink / raw)
  To: cgel.zte
  Cc: Theodore Ts'o, Zeal Robot, luo penghao, linux-ext4,
	linux-kernel, Andreas Dilger

On Thu, 4 Nov 2021 06:40:07 +0000, cgel.zte@gmail.com wrote:
> From: luo penghao <luo.penghao@zte.com.cn>
> 
> The eh assignment in these two places is meaningless, because the
> function will goto to merge, which will not use eh.
> 
> The clang_analyzer complains as follows:
> 
> [...]

Applied, thanks!

[1/1] ext4: remove unused assignments
      commit: 4bf7773e5a636b80de2b9025a7e107b38fe189b9

Best regards,
-- 
Theodore Ts'o <tytso@mit.edu>

^ permalink raw reply	[flat|nested] 2+ messages in thread

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