Index for Section 9r

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BUF_UNLOCK(9r)
NAME
  BUF_UNLOCK - General: Unlocks the specified I/O buffer

SYNOPSIS
  void BUF_UNLOCK(
	  struct buf *bp );

ARGUMENTS
  bp  Specifies a pointer to a buf structure.

DESCRIPTION
  The BUF_UNLOCK routine unlocks the specified I/O buffer that was locked in
  a previous call to BUF_LOCK.	The routine masks all disk and tape
  controller interrupts (by calling the splbio routine). It resets the mutual
  exclusion buffer lock member, b_lock, of the specified buf structure
  pointer.

  The BUF_UNLOCK routine then resets the b_flags member of the specified buf
  structure pointer to indicate that this buffer is not being used. Finally,
  BUF_UNLOCK resets the CPU priority level (by calling the splx routine).

NOTES
  You must have locked the specified I/O buffer by calling BUF_LOCK prior to
  calling the BUF_UNLOCK routine.

RETURN VALUES
  None

SEE ALSO
  Routines: BUF_LOCK(9r)

Index for Section 9r

Alphabetical listing for B

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