bcachefs: fix ifdef for x86_64 asm

The implementation of prefetch_four_cachelines should use ifdef
CONFIG_X86_64 to conditionally compile x86_64 asm.

Signed-off-by: Dan Robertson <dan@dlrobertson.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

diff --git a/fs/bcachefs/bset.c b/fs/bcachefs/bset.c
index 84c4664c9912744ba90edec187e6c8b9a3514c76..9484f28be6de6b8fc875c0ee49858554bf6d5b1d 100644 (file)
--- a/fs/bcachefs/bset.c
+++ b/fs/bcachefs/bset.c
@@ -1181,7 +1181,7 @@ static struct bkey_packed *bset_search_write_set(const struct btree *b,
 
 static inline void prefetch_four_cachelines(void *p)
 {
-#if CONFIG_X86_64
+#ifdef CONFIG_X86_64
        asm("prefetcht0 (-127 + 64 * 0)(%0);"
            "prefetcht0 (-127 + 64 * 1)(%0);"
            "prefetcht0 (-127 + 64 * 2)(%0);"