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@@ -190,13 +190,14 @@ struct flock64
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__BEGIN_DECLS
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-#if 0 /*def __USE_GNU*/
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+#ifdef __USE_GNU
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/* Provide kernel hint to read ahead. */
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extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
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__THROW;
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+#if 0
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/* Selective file content synch'ing. */
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extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to,
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unsigned int __flags);
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@@ -213,6 +214,7 @@ extern int splice (int __fdin, int __fdout, size_t __len, unsigned int __flags)
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/* In-kernel implementation of tee for pipe buffers. */
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extern int tee (int __fdin, int __fdout, size_t __len, unsigned int __flags)
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__THROW;
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+#endif
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#endif
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