vinvalbuf — flushes and invalidates all buffers associated with a vnode

       This manual page was written by Chad David <davidc@acns.ab.ca>.

Debian                                          October 20, 2008                                    VINVALBUF(9)

       The  vinvalbuf()  function invalidates all of the buffers associated with the given vnode.  This includes
       buffers on the clean list and the dirty list.  If the V_SAVE flag is specified then the  buffers  on  the
       dirty  list are synced prior to being released.  If there is a VM Object associated with the vnode, it is
       removed.

       Its arguments are:

       vp        A pointer to the vnode whose buffers will be invalidated.

       flags     The only supported flag is V_SAVE and it indicates that dirty buffers should be synced with the
                 disk.

       cred      The user credentials that are used to VOP_FSYNC(9) buffers if V_SAVE is set.

       slpflag   The slp flag that will be used in the priority of any sleeps in the function.

       slptimeo  The timeout for any sleeps in the function.

       [ENOSPC]           The file system is full.  (With V_SAVE)

       [EDQUOT]           Disc quota exceeded.  (With V_SAVE)

       [EWOULDBLOCK]      Sleep operation timed out.  (See slptimeo)

       [ERESTART]         A signal needs to be delivered and the system call should be restarted.  (With  PCATCH
                          set in slpflag)

       [EINTR]            The system has been interrupted by a signal.  (With PCATCH set in slpflag)

       The vnode is assumed to be locked prior to the call and remains locked upon return.

       Giant must be held by prior to the call and remains locked upon return.

       vinvalbuf — flushes and invalidates all buffers associated with a vnode

             vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
             error = vinvalbuf(devvp, V_SAVE, cred, 0, 0);
             VOP_UNLOCK(devvp, 0);
             if (error)
                     return (error);

       A 0 value is returned on success.

tsleep(9), VOP_FSYNC(9)

#include<sys/param.h>#include<sys/vnode.h>intvinvalbuf(structvnode*vp, intflags, structucred*cred, intslpflag, intslptimeo);