Author: bdrewery
Date: Fri Mar 14 01:43:55 2014
New Revision: 263130
URL: http://svnweb.freebsd.org/changeset/base/263130
Log:
Fix -o size less than PAGE_SIZE resulting in SIZE_MAX being used.
Discussed with: kib
MFC after: 2 weeks
Modified:
head/sys/fs/tmpfs/tmpfs_vfsops.c
Modified: head/sys/fs/tmpfs/tmpfs_vfsops.c
==============================================================================
--- head/sys/fs/tmpfs/tmpfs_vfsops.c Fri Mar 14 01:17:11 2014
(r263129)
+++ head/sys/fs/tmpfs/tmpfs_vfsops.c Fri Mar 14 01:43:55 2014
(r263130)
@@ -200,11 +200,13 @@ tmpfs_mount(struct mount *mp)
* allowed to use, based on the maximum size the user passed in
* the mount structure. A value of zero is treated as if the
* maximum available space was requested. */
- if (size_max < PAGE_SIZE || size_max > OFF_MAX - PAGE_SIZE ||
+ if (size_max == 0 || size_max > OFF_MAX - PAGE_SIZE ||
(SIZE_MAX < OFF_MAX && size_max / PAGE_SIZE >= SIZE_MAX))
pages = SIZE_MAX;
- else
+ else {
+ size_max = roundup(size_max, PAGE_SIZE);
pages = howmany(size_max, PAGE_SIZE);
+ }
MPASS(pages > 0);
if (nodes_max <= 3) {
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