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-rw-r--r--Documentation/filesystems/ceph.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/filesystems/ceph.txt b/Documentation/filesystems/ceph.txt
index 8bf62240e10d..1177052701e1 100644
--- a/Documentation/filesystems/ceph.txt
+++ b/Documentation/filesystems/ceph.txt
@@ -151,6 +151,11 @@ Mount Options
Report overall filesystem usage in statfs instead of using the root
directory quota.
+ nocopyfrom
+ Don't use the RADOS 'copy-from' operation to perform remote object
+ copies. Currently, it's only used in copy_file_range, which will revert
+ to the default VFS implementation if this option is used.
+
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