unimore/kernel-hacking-2024-linux-steffo
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bcachefs: Add a valgrind memcheck hint

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Prevent false positives in bch2_varint_decode_fast()

Signed-off-by: Brett Holman <bholman.devel@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Brett Holman 2021-10-12 21:11:25 -06:00 committed by Kent Overstreet
parent e8bde78a17
commit 3955768075
1 changed files with 7 additions and 0 deletions
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7
fs/bcachefs/varint.c
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@ -5,6 +5,10 @@
#include <linux/string.h>
#include <asm/unaligned.h>
#ifdef CONFIG_VALGRIND
#include <valgrind/memcheck.h>
#endif
#include "varint.h"
/**
@ -96,6 +100,9 @@ int bch2_varint_encode_fast(u8 *out, u64 v)
*/
int bch2_varint_decode_fast(const u8 *in, const u8 *end, u64 *out)
{
#ifdef CONFIG_VALGRIND
VALGRIND_MAKE_MEM_DEFINED(in, 8);
#endif
u64 v = get_unaligned_le64(in);
unsigned bytes = ffz(*in) + 1;