From: Julia Lawall <julia@diku.dk>
To: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [PATCH 6/8] mm: Use ERR_CAST
Date: Sat, 22 May 2010 12:00:56 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.64.1005221200380.13021@ask.diku.dk> (raw)
From: Julia Lawall <julia@diku.dk>
Use ERR_CAST(x) rather than ERR_PTR(PTR_ERR(x)). The former makes more
clear what is the purpose of the operation, which otherwise looks like a
no-op.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
type T;
T x;
identifier f;
@@
T f (...) { <+...
- ERR_PTR(PTR_ERR(x))
+ x
...+> }
@@
expression x;
@@
- ERR_PTR(PTR_ERR(x))
+ ERR_CAST(x)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
---
mm/vmalloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -u -p a/mm/vmalloc.c b/mm/vmalloc.c
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -732,7 +732,7 @@ static struct vmap_block *new_vmap_block
node, gfp_mask);
if (unlikely(IS_ERR(va))) {
kfree(vb);
- return ERR_PTR(PTR_ERR(va));
+ return ERR_CAST(va);
}
err = radix_tree_preload(gfp_mask);
--
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reply other threads:[~2010-05-22 10:01 UTC|newest]
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