bsd/vfs/vfs_cluster.c

175 static int cluster_read_copy(vnode_t vp, struct uio *uio, u_int32_t io_req_size,  off_t filesize, int flags,
177 static int cluster_read_direct(vnode_t vp, struct uio *uio, off_t filesize, int *read_type, u_int32_t *read_length,
179 static int cluster_read_contig(vnode_t vp, struct uio *uio, off_t filesize, int *read_type, u_int32_t *read_length,
191 static int 	cluster_read_prefetch(vnode_t vp, off_t f_offset, u_int size, off_t filesize, int (*callback)(buf_t, void *), void *callback_arg, int bflag);
192 static void	cluster_read_ahead(vnode_t vp, struct cl_extent *extent, off_t filesize, struct cl_readahead *ra, int (*callback)(buf_t, void *), void *callback_arg, int bflag);
1689 cluster_read_prefetch(vnode_t vp, off_t f_offset, u_int size, off_t filesize, int (*callback)(buf_t, void *), void *callback_arg, int bflag)
1694 		     (int)f_offset, size, (int)filesize, 0, 0);
1696 	if (f_offset >= filesize) {
1701         if ((off_t)size > (filesize - f_offset))
1702                 size = filesize - f_offset;
1705 	advisory_read_ext(vp, filesize, f_offset, size, callback, callback_arg, bflag);
1716 cluster_read_ahead(vnode_t vp, struct cl_extent *extent, off_t filesize, struct cl_readahead *rap, int (*callback)(buf_t, void *), void *callback_arg,
1772 	if (f_offset < filesize) {
1785 		size_of_prefetch = cluster_read_prefetch(vp, f_offset, rap->cl_ralen * PAGE_SIZE, filesize, callback, callback_arg, bflag);
1797 		int size, off_t filesize, int flags)
1799         return cluster_pageout_ext(vp, upl, upl_offset, f_offset, size, filesize, flags, NULL, NULL);
1806 		int size, off_t filesize, int flags, int (*callback)(buf_t, void *), void *callback_arg)
1826 		     (int)f_offset, size, (int)filesize, local_flags, 0);
1847 	if (f_offset < 0 || f_offset >= filesize ||
1853 	max_size = filesize - f_offset;
1874 	       int size, off_t filesize, int flags)
1876         return cluster_pagein_ext(vp, upl, upl_offset, f_offset, size, filesize, flags, NULL, NULL);
1882 	       int size, off_t filesize, int flags, int (*callback)(buf_t, void *), void *callback_arg)
1904 		     (int)f_offset, size, (int)filesize, local_flags, 0);
1912 	if (f_offset < 0 || f_offset >= filesize ||
1918 	max_size = filesize - f_offset;
3383 cluster_read(vnode_t vp, struct uio *uio, off_t filesize, int xflags)
3385         return cluster_read_ext(vp, uio, filesize, xflags, NULL, NULL);
3390 cluster_read_ext(vnode_t vp, struct uio *uio, off_t filesize, int xflags, int (*callback)(buf_t, void *), void *callback_arg)
3433 	while ((cur_resid = uio_resid(uio)) && uio->uio_offset < filesize && retval == 0) {
3448 			retval = cluster_read_copy(vp, uio, io_size, filesize, flags, callback, callback_arg);
3452 		        retval = cluster_read_direct(vp, uio, filesize, &read_type, &read_length, flags, callback, callback_arg);
3456 		        retval = cluster_read_contig(vp, uio, filesize, &read_type, &read_length, callback, callback_arg, flags);
3485 cluster_read_copy(vnode_t vp, struct uio *uio, u_int32_t io_req_size, off_t filesize, int flags, int (*callback)(buf_t, void *), void *callback_arg)
3520 		     (int)uio->uio_offset, io_req_size, (int)filesize, flags, 0);
3545 	if (last_request_offset > filesize)
3546 	        last_request_offset = filesize;
3587 	while (io_req_size && uio->uio_offset < filesize && retval == 0) {
3589 		max_size = filesize - uio->uio_offset;
3621 					        size_of_prefetch = cluster_read_prefetch(vp, last_ioread_offset, size_of_prefetch, filesize, callback, callback_arg, bflag);
3661 				        cluster_read_ahead(vp, &extent, filesize, rap, callback, callback_arg, bflag);
3678 			max_size = filesize - uio->uio_offset;
3781 			if ((off_t)(upl_f_offset + upl_offset + io_size) > filesize)
3782 			        io_size = filesize - (upl_f_offset + upl_offset);
3856 					size_of_prefetch = cluster_read_prefetch(vp, last_ioread_offset, size_of_prefetch, filesize, callback, callback_arg, bflag);
3872 					cluster_read_ahead(vp, &extent, filesize, rap, callback, callback_arg, bflag);
4010 cluster_read_direct(vnode_t vp, struct uio *uio, off_t filesize, int *read_type, u_int32_t *read_length,
4052 		     (int)uio->uio_offset, (int)filesize, *read_type, *read_length, 0);
4105         max_io_size = filesize - uio->uio_offset;
4481 	if (retval == 0 && iostate.io_error == 0 && io_req_size == 0 && uio->uio_offset < filesize) {
4488 				     (int)uio->uio_offset, (int)filesize, *read_type, *read_length, 0);
4520 	        retval = cluster_read_copy(vp, uio, io_req_size, filesize, flags, callback, callback_arg);
4532 cluster_read_contig(vnode_t vp, struct uio *uio, off_t filesize, int *read_type, u_int32_t *read_length,
4571 	cluster_syncup(vp, filesize, callback, callback_arg);
4586 	max_size = filesize - uio->uio_offset;
4707 	if (error == 0 && iostate.io_error == 0 && tail_size == 0 && num_upl < MAX_VECTS && uio->uio_offset < filesize) {
4815 advisory_read(vnode_t vp, off_t filesize, off_t f_offset, int resid)
4817         return advisory_read_ext(vp, filesize, f_offset, resid, NULL, NULL, CL_PASSIVE);
4821 advisory_read_ext(vnode_t vp, off_t filesize, off_t f_offset, int resid, int (*callback)(buf_t, void *), void *callback_arg, int bflag)
4860 		     (int)f_offset, resid, (int)filesize, 0, 0);
4862 	while (resid && f_offset < filesize && retval == 0) {
4873 		max_size     = filesize - f_offset;
4975 				if ((off_t)(upl_f_offset + upl_offset + io_size) > filesize)
4976 				        io_size = filesize - (upl_f_offset + upl_offset);
5839 is_file_clean(vnode_t vp, off_t filesize)
5845 	for (f_offset = 0; f_offset < filesize; f_offset += PAGE_SIZE_64) {