diff options
| author | Roel Kluin <roel.kluin@gmail.com> | 2009-03-31 15:23:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-01 08:59:13 -0700 |
| commit | e2f17d9459aeccf4e013e31cbd741d6b1858eec4 (patch) | |
| tree | 919fb245d700a04d253247e19db0b084454b20cc /mm/hugetlb.c | |
| parent | d1d7487173eab8352125cf6cc271940f24254bd4 (diff) | |
| download | lwn-e2f17d9459aeccf4e013e31cbd741d6b1858eec4.tar.gz lwn-e2f17d9459aeccf4e013e31cbd741d6b1858eec4.zip | |
hugetlb: chg cannot become less than 0
chg is unsigned, so it cannot be less than 0.
Also, since region_chg returns long, let vma_needs_reservation() forward
this to alloc_huge_page(). Store it as long as well. all callers cast it
to long anyway.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Adam Litke <agl@us.ibm.com>
Cc: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 107da3d809a8..28c655ba9353 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -918,7 +918,7 @@ static void return_unused_surplus_pages(struct hstate *h, * an instantiated the change should be committed via vma_commit_reservation. * No action is required on failure. */ -static int vma_needs_reservation(struct hstate *h, +static long vma_needs_reservation(struct hstate *h, struct vm_area_struct *vma, unsigned long addr) { struct address_space *mapping = vma->vm_file->f_mapping; @@ -933,7 +933,7 @@ static int vma_needs_reservation(struct hstate *h, return 1; } else { - int err; + long err; pgoff_t idx = vma_hugecache_offset(h, vma, addr); struct resv_map *reservations = vma_resv_map(vma); @@ -969,7 +969,7 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma, struct page *page; struct address_space *mapping = vma->vm_file->f_mapping; struct inode *inode = mapping->host; - unsigned int chg; + long chg; /* * Processes that did not create the mapping will have no reserves and |