biowait man page on IRIX

biowait man page on IRIX

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biowait(D3)							   biowait(D3)

NAME
     biowait - suspend processes pending completion of block I/O

SYNOPSIS
     #include <sys/types.h>
     #include <sys/buf.h>
     #include <sys/ddi.h>
     int biowait(buf_t *bp);

   Arguments
     bp	       Pointer to the buffer header structure.

DESCRIPTION
     The biowait function suspends process execution during block I/O.

   Return Values
     If an error occurred during the I/O transfer, the error number is
     returned.	Otherwise, on success, 0 is returned.

USAGE
     Block drivers that have allocated their own buffers with geteblk(D3),
     getrbuf(D3), or ngeteblk(D3) can use biowait to suspend the current
     process execution while waiting for a read or write request to complete.

     Drivers using biowait must use biodone(D3) in their I/O completion
     handlers to signal biowait when the I/O transfer is complete.

   Level
     Base only.

   Synchronization Constraints
     Can sleep.

     Driver-defined basic locks and read/write locks may not be held across
     calls to this function.

     Driver-defined sleep locks may be held across calls to this function.

REFERENCES
     biodone(D3), buf(D4), geteblk(D3), getrbuf(D3), intr(D2), ngeteblk(D3),
     strategy(D2)

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