C++ (Cpp) vm_clear_cache Beispiele

Beispiel #1

Datei: cache.c Projekt: Stichting-MINIX-Research-Foundation/minix

/*===========================================================================*
 *				lmfs_invalidate				     *
 *===========================================================================*/
void lmfs_invalidate(
  dev_t device			/* device whose blocks are to be purged */
)
{
/* Remove all the blocks belonging to some device from the cache. */

  register struct buf *bp;

  assert(device != NO_DEV);

  for (bp = &buf[0]; bp < &buf[nr_bufs]; bp++) {
	if (bp->lmfs_dev == device) {
		assert(bp->data);
		assert(bp->lmfs_bytes > 0);
		munmap_t(bp->data, bp->lmfs_bytes);
		bp->lmfs_dev = NO_DEV;
		bp->lmfs_bytes = 0;
		bp->data = NULL;
	}
  }

  /* Clear the cache even if VM caching is disabled for the file system:
   * caching may be disabled as side effect of an error, leaving blocks behind
   * in the actual VM cache.
   */
  vm_clear_cache(device);
}

Beispiel #2

/*===========================================================================*
 *				lmfs_invalidate				     *
 *===========================================================================*/
void lmfs_invalidate(
  dev_t device			/* device whose blocks are to be purged */
)
{
/* Remove all the blocks belonging to some device from the cache. */

  register struct buf *bp;

  for (bp = &buf[0]; bp < &buf[nr_bufs]; bp++) {
	if (bp->lmfs_dev == device) {
		assert(bp->data);
		assert(bp->lmfs_bytes > 0);
		munmap_t(bp->data, bp->lmfs_bytes);
		bp->lmfs_dev = NO_DEV;
		bp->lmfs_bytes = 0;
		bp->data = NULL;
	}
  }

  vm_clear_cache(device);
}