Messages in this thread Patch in this message | | | From | Arnd Bergmann <> | Subject | [PATCH] mm/mremap: fix BUILD_BUG_ON() error in get_extent | Date | Wed, 30 Dec 2020 16:40:40 +0100 |
| |
From: Arnd Bergmann <arnd@arndb.de>
clang cannt evaluate this function argument at compile time when the function is not inlined, which leads to a link time failure:
ld.lld: error: undefined symbol: __compiletime_assert_414 >>> referenced by mremap.c >>> mremap.o:(get_extent) in archive mm/built-in.a
Mark the function as __always_inline to avoid it.
Fixes: 9ad9718bfa41 ("mm/mremap: calculate extent in one place") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- mm/mremap.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/mremap.c b/mm/mremap.c index c5590afe7165..1cb464a07184 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -336,8 +336,9 @@ enum pgt_entry { * valid. Else returns a smaller extent bounded by the end of the source and * destination pgt_entry. */ -static unsigned long get_extent(enum pgt_entry entry, unsigned long old_addr, - unsigned long old_end, unsigned long new_addr) +static __always_inline unsigned long get_extent(enum pgt_entry entry, + unsigned long old_addr, unsigned long old_end, + unsigned long new_addr) { unsigned long next, extent, mask, size; -- 2.29.2
| |