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H A D | maccess.c | 2a71e81d Mon Jun 08 23:35:04 CDT 2020 Christoph Hellwig <hch@lst.de> maccess: return -ERANGE when probe_kernel_read() fails
Allow the callers to distinguish a real unmapped address vs a range that can't be probed.
Suggested-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20200521152301.2587579-24-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2a71e81d Mon Jun 08 23:35:04 CDT 2020 Christoph Hellwig <hch@lst.de> maccess: return -ERANGE when probe_kernel_read() fails Allow the callers to distinguish a real unmapped address vs a range that can't be probed. Suggested-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20200521152301.2587579-24-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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