On Fri, 8 Jan 2010, Jaakko Heinonen wrote:
Does following patch look reasonable?
- Fix style bugs introduced in r201773.
- Change the type of nodes_max to u_int and use "%u" format string to
convert its value.
Index: sys/fs/tmpfs/tmpfs_vfsops.c
===================================================================
--- sys/fs/tmpfs/tmpfs_vfsops.c (revision 201818)
+++ sys/fs/tmpfs/tmpfs_vfsops.c (working copy)
@@ -239,7 +239,7 @@ 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 > (SIZE_MAX - PAGE_SIZE))
+ if (size_max < PAGE_SIZE || size_max > SIZE_MAX - PAGE_SIZE)
pages = SIZE_MAX;
I think you should change this to use howmany() (or set size_max and
join the else clause) too.
else
pages = howmany(size_max, PAGE_SIZE);
OK. Gleb Kurtsou reported a more interesting problem related to large
values of `pages' being too large. I'll let you look at this... IIRC
he made the byte limit UINT_MAX. Perhaps it should be a small fraction
of the address space (UINT_MAX is still larger than physically possible
for 32-bit systems).
Bruce
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