kernel/cache/file_cache.cpp

103 static void add_to_iovec(generic_io_vec* vecs, uint32 &index, uint32 max,
235 add_to_iovec(generic_io_vec* vecs, uint32 &index, uint32 max,
238 	if (index > 0 && vecs[index - 1].base + vecs[index - 1].length == address) {
240 		vecs[index - 1].length += size;
248 	vecs[index].base = address;
249 	vecs[index].length = size;
335 	const generic_io_vec* vecs, size_t count, uint32 flags,
340 	status_t status = vfs_read_pages(ref->vnode, cookie, offset, vecs, count,
355 			generic_size_t length = min_c(bytesUntouched, vecs[i].length);
356 			vm_memset_physical(vecs[i].base + vecs[i].length - length, 0,
386 	generic_io_vec vecs[MAX_IO_VECS];
400 		add_to_iovec(vecs, vecCount, MAX_IO_VECS,
410 	status_t status = read_pages_and_clear_partial(ref, cookie, offset, vecs,
502 	generic_io_vec vecs[MAX_IO_VECS];
528 		add_to_iovec(vecs, vecCount, MAX_IO_VECS,
541 		generic_io_vec readVec = { vecs[0].base, B_PAGE_SIZE };
554 		generic_addr_t last = vecs[vecCount - 1].base
555 			+ vecs[vecCount - 1].length - B_PAGE_SIZE;
583 		generic_addr_t base = vecs[i].base;
585 			generic_size_t(vecs[i].length - pageOffset));
606 		status_t status = vfs_write_pages(ref->vnode, cookie, offset, vecs,
639 		generic_io_vec* vecs = sZeroVecs;
649 				vecs = &vec;
655 			vecs, count, B_PHYSICAL_IO_REQUEST, &length);