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| author | dyson <dyson@FreeBSD.org> | 1996-02-11 22:03:49 +0000 |
|---|---|---|
| committer | dyson <dyson@FreeBSD.org> | 1996-02-11 22:03:49 +0000 |
| commit | e46dad739e813e40c45db29ec1899a1cacd02a6c (patch) | |
| tree | f5eb0869730d65d9bbaa22390b1c14bdd63c698c | |
| parent | a4ded7ab0e297e64aca4f98a34d7701bb1f877a1 (diff) | |
| download | FreeBSD-src-e46dad739e813e40c45db29ec1899a1cacd02a6c.zip FreeBSD-src-e46dad739e813e40c45db29ec1899a1cacd02a6c.tar.gz | |
Fixed a really bogus problem with msync ripping pages away from
objects before they were written. Also, don't allow processes
without write access to remove pages from vm_objects.
| -rw-r--r-- | sys/vm/vm_map.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c index e1d9330..df069cd 100644 --- a/sys/vm/vm_map.c +++ b/sys/vm/vm_map.c @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id: vm_map.c,v 1.31 1996/01/04 21:13:17 wollman Exp $ + * $Id: vm_map.c,v 1.32 1996/01/19 03:59:52 dyson Exp $ */ /* @@ -1529,16 +1529,17 @@ vm_map_clean(map, start, end, syncio, invalidate) * the object before it completes is probably a very bad * idea. */ - if (current->protection & VM_PROT_WRITE) + if (current->protection & VM_PROT_WRITE) { vm_object_page_clean(object, OFF_TO_IDX(offset), OFF_TO_IDX(offset + size), - syncio, TRUE); - if (invalidate) - vm_object_page_remove(object, - OFF_TO_IDX(offset), - OFF_TO_IDX(offset + size), - FALSE); + (syncio||invalidate)?1:0, TRUE); + if (invalidate) + vm_object_page_remove(object, + OFF_TO_IDX(offset), + OFF_TO_IDX(offset + size), + FALSE); + } } start += size; } |
