GETIOBUF(9) BSD Kernel Developer's Manual GETIOBUF(9)
NAME
getiobuf, putiobuf -- I/O descriptor allocation interface
SYNOPSIS
#include <sys/buf.h>
struct buf *
getiobuf(struct vnode *vp, bool waitok);
void
putiobuf(struct buf *bp);
DESCRIPTION
getiobuf() allocates a buf structure.
vp The vnode to which the allocated buffer will be associated. This can be NULL.
waitok If true, getiobuf can sleep until enough memory is available. Otherwise, it returns NULL immediately if not enough memory is avail-
able.
Note that the allocated buffer doesn't belong to the buffer cache. To free it, putiobuf() should be used. brelse() should not be used on
it.
putiobuf() frees bp, which should be a buffer allocated with getiobuf().
SEE ALSO
buffercache(9), intro(9)
BSD
May 6, 2008 BSD
