From: Luca Coelho <luciano.coelho@xxxxxxxxx>
Ubuntu cherry-picked the patch that added
u64_stat_update_begin_irqsave() in their 4.15 kernel, so we get a
redefinition compilation error if we try to compile against that.
To solve this, check UTS_UBUNTU_RELEASE_ABI and don't define our
backported function if it's 33 or higher.
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
---
backport/backport-include/linux/u64_stats_sync.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/backport/backport-include/linux/u64_stats_sync.h b/backport/backport-include/linux/u64_stats_sync.h
index 0d2212382db7..251373a74139 100644
--- a/backport/backport-include/linux/u64_stats_sync.h
+++ b/backport/backport-include/linux/u64_stats_sync.h
@@ -152,7 +152,8 @@ static inline bool u64_stats_fetch_retry_irq(const struct u64_stats_sync *syncp,
#endif /* LINUX_VERSION_IS_LESS(3,13,0) */
#if LINUX_VERSION_IS_LESS(4,16,0) && \
- !LINUX_VERSION_IN_RANGE(4,14,44, 4,15,0)
+ !LINUX_VERSION_IN_RANGE(4,14,44, 4,15,0) && \
+ !(LINUX_VERSION_IS_GEQ(4,15,18) && UTS_UBUNTU_RELEASE_ABI >= 33)
static inline unsigned long
u64_stats_update_begin_irqsave(struct u64_stats_sync *syncp)
{
--
2.19.0
--
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