diff options
| author | cth <none@none> | 2006-07-22 14:55:09 -0700 |
|---|---|---|
| committer | cth <none@none> | 2006-07-22 14:55:09 -0700 |
| commit | 6f84fed5adadb9b854b3f7100b25ac8d57edcd57 (patch) | |
| tree | d222fc3e431abc8c9ce485b8d5624f3b9ac6f055 | |
| parent | 0b69c2f001a429251e2d38f25aca860396551214 (diff) | |
| download | illumos-gate-6f84fed5adadb9b854b3f7100b25ac8d57edcd57.tar.gz | |
6384832 bioclone representation of bp_mapin buffer could be misinterpreted
| -rw-r--r-- | usr/src/uts/common/os/bio.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/usr/src/uts/common/os/bio.c b/usr/src/uts/common/os/bio.c index 554f3d2bf5..a828f28272 100644 --- a/usr/src/uts/common/os/bio.c +++ b/usr/src/uts/common/os/bio.c @@ -2,9 +2,8 @@ * CDDL HEADER START * * The contents of this file are subject to the terms of the - * Common Development and Distribution License, Version 1.0 only - * (the "License"). You may not use this file except in compliance - * with the License. + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. @@ -20,7 +19,7 @@ * CDDL HEADER END */ /* - * Copyright 2005 Sun Microsystems, Inc. All rights reserved. + * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ @@ -2043,8 +2042,7 @@ bioclone(struct buf *bp, off_t off, size_t len, dev_t dev, daddr_t blkno, B_ABRWRITE) /* - * the cloned buffer does not inherit the B_REMAPPED flag. A separate - * bp_mapin(9F) has to be done to get a kernel mapping. + * The cloned buffer does not inherit the B_REMAPPED flag. */ bufp->b_flags = (bp->b_flags & BUF_CLONE_FLAGS) | B_BUSY; bufp->b_bcount = len; @@ -2062,6 +2060,8 @@ bioclone(struct buf *bp, off_t off, size_t len, dev_t dev, daddr_t blkno, bufp->b_shadow = bp->b_shadow + btop(((uintptr_t)bp->b_un.b_addr & PAGEOFFSET) + off); bufp->b_un.b_addr = (caddr_t)((uintptr_t)bp->b_un.b_addr + off); + if (bp->b_flags & B_REMAPPED) + bufp->b_proc = NULL; } else { if (bp->b_flags & B_PAGEIO) { struct page *pp; |