The patch titled
Subject: mm/mremap: fix BUILD_BUG_ON() error in get_extent
has been added to the -mm tree. Its filename is
mm-mremap-fix-build_bug_on-error-in-get_extent.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-mremap-fix-build_bug_on-error-in-get_extent.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-mremap-fix-build_bug_on-error-in-get_extent.patch
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------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxxxx>
Subject: mm/mremap: fix BUILD_BUG_ON() error in get_extent
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.
Link: https://lkml.kernel.org/r/20201230154104.522605-1-arnd@xxxxxxxxxx
Fixes: 9ad9718bfa41 ("mm/mremap: calculate extent in one place")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mremap.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/mm/mremap.c~mm-mremap-fix-build_bug_on-error-in-get_extent
+++ a/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;
_
Patches currently in -mm which might be from arnd@xxxxxxxxxx are
mm-mremap-fix-build_bug_on-error-in-get_extent.patch
