The patch titled
Subject: arm64: turn flush_dcache_mmap_lock into a no-op
has been removed from the -mm tree. Its filename was
arm64-turn-flush_dcache_mmap_lock-into-a-no-op.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Subject: arm64: turn flush_dcache_mmap_lock into a no-op
ARM64 doesn't walk the VMA tree in its flush_dcache_page() implementation,
so has no need to take the tree_lock.
Link: http://lkml.kernel.org/r/20180313132639.17387-4-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Reviewed-by: Will Deacon <will.deacon@xxxxxxx>
Cc: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Jeff Layton <jlayton@xxxxxxxxxx>
Cc: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm64/include/asm/cacheflush.h | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff -puN arch/arm64/include/asm/cacheflush.h~arm64-turn-flush_dcache_mmap_lock-into-a-no-op arch/arm64/include/asm/cacheflush.h
--- a/arch/arm64/include/asm/cacheflush.h~arm64-turn-flush_dcache_mmap_lock-into-a-no-op
+++ a/arch/arm64/include/asm/cacheflush.h
@@ -140,10 +140,8 @@ static inline void __flush_icache_all(vo
dsb(ish);
}
-#define flush_dcache_mmap_lock(mapping) \
- spin_lock_irq(&(mapping)->tree_lock)
-#define flush_dcache_mmap_unlock(mapping) \
- spin_unlock_irq(&(mapping)->tree_lock)
+#define flush_dcache_mmap_lock(mapping) do { } while (0)
+#define flush_dcache_mmap_unlock(mapping) do { } while (0)
/*
* We don't appear to need to do anything here. In fact, if we did, we'd
_
Patches currently in -mm which might be from mawilcox@xxxxxxxxxxxxx are
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
