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f88f0bdfc3
UBD at present is extremely slow because it handles only one request at a time in the IO thread and IRQ handler. The single request at a time is replaced by handling multiple requests as well as necessary workarounds for short reads/writes. Resulting performance improvement in disk IO - 30% Signed-off-by: Anton Ivanov <aivanov@kot-begemot.co.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
20 lines
430 B
C
20 lines
430 B
C
/*
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* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
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* Copyright (C) 2001 RidgeRun, Inc (glonnon@ridgerun.com)
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* Licensed under the GPL
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*/
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#ifndef __UM_UBD_USER_H
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#define __UM_UBD_USER_H
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extern int start_io_thread(unsigned long sp, int *fds_out);
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extern int io_thread(void *arg);
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extern int kernel_fd;
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extern int ubd_read_poll(int timeout);
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extern int ubd_write_poll(int timeout);
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#define UBD_REQ_BUFFER_SIZE 64
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#endif
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