1RELAY_FILE_READ_SUBB(9)     relay interface support    RELAY_FILE_READ_SUBB(9)
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NAME

6       relay_file_read_subbuf_avail - return bytes available in sub-buffer
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SYNOPSIS

9       size_t relay_file_read_subbuf_avail(size_t read_pos,
10                                           struct rchan_buf * buf);
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ARGUMENTS

13       read_pos
14           file read position
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16       buf
17           relay channel buffer
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20Kernel Hackers Manual 2.6.         June 2019           RELAY_FILE_READ_SUBB(9)
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