The patch titled
Subject: lib/refcount.c: use REFCOUNT_WARN() to simplify code
has been added to the -mm tree. Its filename is
locking-refcount-use-refcount_warn-to-simplify-code.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/locking-refcount-use-refcount_warn-to-simplify-code.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/locking-refcount-use-refcount_warn-to-simplify-code.patch
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From: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
Subject: lib/refcount.c: use REFCOUNT_WARN() to simplify code
To avoid the check "new > val" appears twice, and make the style
consistent with that in refcount_warn_saturate().
Link: https://lkml.kernel.org/r/20220316125114.1177-1-thunder.leizhen@xxxxxxxxxx
Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/refcount.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/lib/refcount.c~locking-refcount-use-refcount_warn-to-simplify-code
+++ a/lib/refcount.c
@@ -84,7 +84,7 @@ bool refcount_dec_not_one(refcount_t *r)
new = val - 1;
if (new > val) {
- WARN_ONCE(new > val, "refcount_t: underflow; use-after-free.\n");
+ REFCOUNT_WARN("underflow; use-after-free");
return true;
}
_
Patches currently in -mm which might be from thunder.leizhen@xxxxxxxxxx are
locking-refcount-use-refcount_warn-to-simplify-code.patch
