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-rw-r--r--fs/xfs/xfs_linux.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h
index ad1009778d33..5b7a1e201559 100644
--- a/fs/xfs/xfs_linux.h
+++ b/fs/xfs/xfs_linux.h
@@ -175,6 +175,12 @@ static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev)
#define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL)
#define xfs_stack_trace() dump_stack()
+static inline uint64_t rounddown_64(uint64_t x, uint32_t y)
+{
+ do_div(x, y);
+ return x * y;
+}
+
static inline uint64_t roundup_64(uint64_t x, uint32_t y)
{
x += y - 1;

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