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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/linux/falloc.h
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@@ -20,7 +20,10 @@
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 };
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 #define FS_IOC_RESVSP		_IOW('X', 40, struct space_resv)
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+#define FS_IOC_UNRESVSP		_IOW('X', 41, struct space_resv)
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 #define FS_IOC_RESVSP64		_IOW('X', 42, struct space_resv)
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+#define FS_IOC_UNRESVSP64	_IOW('X', 43, struct space_resv)
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+#define FS_IOC_ZERO_RANGE	_IOW('X', 57, struct space_resv)
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 #define	FALLOC_FL_SUPPORTED_MASK	(FALLOC_FL_KEEP_SIZE |		\
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 					 FALLOC_FL_PUNCH_HOLE |		\
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@@ -29,4 +32,25 @@
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 					 FALLOC_FL_INSERT_RANGE |	\
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 					 FALLOC_FL_UNSHARE_RANGE)
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+/* on ia32 l_start is on a 32-bit boundary */
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+#if defined(CONFIG_X86_64)
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+struct space_resv_32 {
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+	__s16		l_type;
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+	__s16		l_whence;
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+	__s64		l_start	__attribute__((packed));
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+			/* len == 0 means until end of file */
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+	__s64		l_len __attribute__((packed));
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+	__s32		l_sysid;
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+	__u32		l_pid;
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+	__s32		l_pad[4];	/* reserve area */
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+};
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+
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+#define FS_IOC_RESVSP_32	_IOW ('X', 40, struct space_resv_32)
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+#define FS_IOC_UNRESVSP_32	_IOW ('X', 41, struct space_resv_32)
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+#define FS_IOC_RESVSP64_32	_IOW ('X', 42, struct space_resv_32)
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+#define FS_IOC_UNRESVSP64_32	_IOW ('X', 43, struct space_resv_32)
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+#define FS_IOC_ZERO_RANGE_32	_IOW ('X', 57, struct space_resv_32)
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+
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+#endif
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+
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 #endif /* _FALLOC_H_ */