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-rw-r--r--include/fuse.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/fuse.h b/include/fuse.h
index 6f162dd..3cf0423 100644
--- a/include/fuse.h
+++ b/include/fuse.h
@@ -274,6 +274,20 @@ struct fuse_config {
* fuse_file_info argument is NULL.
*/
int nullpath_ok;
+ /**
+ * Allow parallel direct-io writes to operate on the same file.
+ *
+ * FUSE implementations which do not handle parallel writes on
+ * same file/region should NOT enable this option at all as it
+ * might lead to data inconsistencies.
+ *
+ * For the FUSE implementations which have their own mechanism
+ * of cache/data integrity are beneficiaries of this setting as
+ * it now open doors to parallel writes on the same file (without
+ * enabling this setting, all direct writes on the same file are
+ * serialized, resulting in huge data bandwidth loss).
+ */
+ int parallel_direct_writes;
/**
* The remaining options are used by libfuse internally and