From 695faeb592497313689556cd6b2cc830a0f3b9a0 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Sun, 28 Jan 2024 09:53:55 +0100 Subject: bcachefs: Fix build on parisc by avoiding __multi3() The gcc compiler on paric does support the __int128 type, although the architecture does not have native 128-bit support. The effect is, that the bcachefs u128_square() function will pull in the libgcc __multi3() helper, which breaks the kernel build when bcachefs is built as module since this function isn't currently exported in arch/parisc/kernel/parisc_ksyms.c. The build failure can be seen in the latest debian kernel build at: https://buildd.debian.org/status/fetch.php?pkg=linux&arch=hppa&ver=6.7.1-1%7Eexp1&stamp=1706132569&raw=0 We prefer to not export that symbol, so fall back to the optional 64-bit implementation provided by bcachefs and thus avoid usage of __multi3(). Signed-off-by: Helge Deller Cc: Kent Overstreet Signed-off-by: Kent Overstreet (cherry picked from commit eba38cc7578bef94865341c73608bdf49193a51d) --- fs/bcachefs/mean_and_variance.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/bcachefs/mean_and_variance.h b/fs/bcachefs/mean_and_variance.h index 647505010b39..056e797383fb 100644 --- a/fs/bcachefs/mean_and_variance.h +++ b/fs/bcachefs/mean_and_variance.h @@ -14,7 +14,7 @@ * type */ -#ifdef __SIZEOF_INT128__ +#if defined(__SIZEOF_INT128__) && defined(__KERNEL__) && !defined(CONFIG_PARISC) typedef struct { unsigned __int128 v; -- cgit v1.2.3