From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/net/ceph/striper.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/kernel/net/ceph/striper.c b/kernel/net/ceph/striper.c
index c36462d..3b3fa75 100644
--- a/kernel/net/ceph/striper.c
+++ b/kernel/net/ceph/striper.c
@@ -259,3 +259,20 @@
return 0;
}
EXPORT_SYMBOL(ceph_extent_to_file);
+
+u64 ceph_get_num_objects(struct ceph_file_layout *l, u64 size)
+{
+ u64 period = (u64)l->stripe_count * l->object_size;
+ u64 num_periods = DIV64_U64_ROUND_UP(size, period);
+ u64 remainder_bytes;
+ u64 remainder_objs = 0;
+
+ div64_u64_rem(size, period, &remainder_bytes);
+ if (remainder_bytes > 0 &&
+ remainder_bytes < (u64)l->stripe_count * l->stripe_unit)
+ remainder_objs = l->stripe_count -
+ DIV_ROUND_UP_ULL(remainder_bytes, l->stripe_unit);
+
+ return num_periods * l->stripe_count - remainder_objs;
+}
+EXPORT_SYMBOL(ceph_get_num_objects);
--
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