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-rw-r--r--Documentation/filesystems/porting3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting
index 12c57abdaac9..46f3bb7a02f5 100644
--- a/Documentation/filesystems/porting
+++ b/Documentation/filesystems/porting
@@ -575,3 +575,6 @@ in your dentry operations instead.
Old method is only used if the new one is absent; eventually it will
be removed. Switch while you still can; the old one won't stay.
+--
+[mandatory]
+ ->atomic_open() calls without O_CREAT may happen in parallel.