sg_pager.c (fe267a559009cbf34f9341666fe4d88a92c02d5e) sg_pager.c (10d9120c44480b6ce02f9b37ee8c0724c358ee65)
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2009 Hudson River Trading LLC
5 * Written by: John H. Baldwin <jhb@FreeBSD.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without

--- 86 unchanged lines hidden (view full) ---

95 npages += sg->sg_segs[i].ss_len / PAGE_SIZE;
96 }
97
98 /*
99 * The scatter/gather list has a fixed size. Refuse requests
100 * to map beyond that.
101 */
102 size = round_page(size);
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2009 Hudson River Trading LLC
5 * Written by: John H. Baldwin <jhb@FreeBSD.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without

--- 86 unchanged lines hidden (view full) ---

95 npages += sg->sg_segs[i].ss_len / PAGE_SIZE;
96 }
97
98 /*
99 * The scatter/gather list has a fixed size. Refuse requests
100 * to map beyond that.
101 */
102 size = round_page(size);
103 pindex = UOFF_TO_IDX(foff) + UOFF_TO_IDX(size);
104 if (pindex > npages || pindex < UOFF_TO_IDX(foff) ||
105 pindex < UOFF_TO_IDX(size))
103 pindex = OFF_TO_IDX(foff) + OFF_TO_IDX(size);
104 if (pindex > npages || pindex < OFF_TO_IDX(foff) ||
105 pindex < OFF_TO_IDX(size))
106 return (NULL);
107
108 /*
109 * Allocate a new object and associate it with the
110 * scatter/gather list. It is ok for our purposes to have
111 * multiple VM objects associated with the same scatter/gather
112 * list because scatter/gather lists are static. This is also
113 * simpler than ensuring a unique object per scatter/gather

--- 116 unchanged lines hidden --- 		106 return (NULL);
107
108 /*
109 * Allocate a new object and associate it with the
110 * scatter/gather list. It is ok for our purposes to have
111 * multiple VM objects associated with the same scatter/gather
112 * list because scatter/gather lists are static. This is also
113 * simpler than ensuring a unique object per scatter/gather

--- 116 unchanged lines hidden ---