The patch titled
Subject: err.h: add (missing) unlikely() to IS_ERR_OR_NULL()
has been added to the -mm tree. Its filename is
errh-add-missing-unlikely-to-is_err_or_null.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/errh-add-missing-unlikely-to-is_err_or_null.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/errh-add-missing-unlikely-to-is_err_or_null.patch
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------------------------------------------------------
From: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Subject: err.h: add (missing) unlikely() to IS_ERR_OR_NULL()
IS_ERR_VALUE() already contains it and so we need to add this only to the
!ptr check. That will allow users of IS_ERR_OR_NULL(), to not add this
compiler flag.
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/err.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN include/linux/err.h~errh-add-missing-unlikely-to-is_err_or_null include/linux/err.h
--- a/include/linux/err.h~errh-add-missing-unlikely-to-is_err_or_null
+++ a/include/linux/err.h
@@ -37,7 +37,7 @@ static inline bool __must_check IS_ERR(_
static inline bool __must_check IS_ERR_OR_NULL(__force const void *ptr)
{
- return !ptr || IS_ERR_VALUE((unsigned long)ptr);
+ return unlikely(!ptr) || IS_ERR_VALUE((unsigned long)ptr);
}
/**
_
Patches currently in -mm which might be from viresh.kumar@xxxxxxxxxx are
errh-add-missing-unlikely-to-is_err_or_null.patch
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