path: root/fs/minix
diff options
authorVladimir Serbinenko <phcoder@gmail.com>2012-07-30 14:42:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-30 17:25:19 -0700
commit6ed6a722f9abac25b0549e7507a2b745ede4475c (patch)
treee4abd14e4d767d37010df501e0941fd826590522 /fs/minix
parent8dccaf0607b3e047680952d0baf4da0486fbbcc1 (diff)
minixfs: fix block limit check
On minix2 and minix3 usually max_size is 7fffffff and the check in question prohibits creation of last block spanning right before 7fffffff, due to downward rounding during the division. Fix it by using multiplication instead. [akpm@linux-foundation.org: fix up code layout, use local `sb'] Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/minix')
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/minix/itree_v2.c b/fs/minix/itree_v2.c
index 13487ad1689..78e2d93e5c8 100644
--- a/fs/minix/itree_v2.c
+++ b/fs/minix/itree_v2.c
@@ -32,7 +32,8 @@ static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
if (block < 0) {
printk("MINIX-fs: block_to_path: block %ld < 0 on dev %s\n",
block, bdevname(sb->s_bdev, b));
- } else if (block >= (minix_sb(inode->i_sb)->s_max_size/sb->s_blocksize)) {
+ } else if ((u64)block * (u64)sb->s_blocksize >=
+ minix_sb(sb)->s_max_size) {
if (printk_ratelimit())
printk("MINIX-fs: block_to_path: "
"block %ld too big on dev %s\n",