taglinefilesource code
B_FREE331fs/buffer.cif (bh->b_dev == B_FREE)
B_FREE353fs/buffer.cif(bh->b_dev != B_FREE)
B_FREE371fs/buffer.cif(bh->b_dev == B_FREE) {
B_FREE392fs/buffer.cif(bh->b_dev == B_FREE)
B_FREE417fs/buffer.cbh->b_dev = B_FREE;  /* So it is obvious we are on the free list */
B_FREE434fs/buffer.cif(bh->b_dev == B_FREE) {
B_FREE669fs/buffer.cif(bh->b_dev == B_FREE)
B_FREE672fs/buffer.cbh->b_dev = B_FREE;
B_FREE809fs/buffer.cif(buf->b_dev == B_FREE) {
B_FREE1073fs/buffer.cbh->b_dev = B_FREE;  /* Flag as unused */
B_FREE119mm/page_alloc.c&& tmp->b_dev != B_FREE)