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NFS: Prevent integer overflow in nfs_scan_list()

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Also ensure that nfs_inode ncommit and npages are large enough to represent
all possible values for the number of pages.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2007-06-17 15:47:53 -04:00
parent 2aefa10431
commit dce34ce298
2 changed files with 3 additions and 1 deletions
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2
fs/nfs/pagelist.c
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@ -425,6 +425,8 @@ int nfs_scan_list(struct nfs_inode *nfsi,
req->wb_index, tag);
nfs_list_add_request(req, dst);
res++;
if (res == INT_MAX)
goto out;
}
}

2
include/linux/nfs_fs.h
View File

@ -158,7 +158,7 @@ struct nfs_inode {
spinlock_t req_lock;
struct radix_tree_root nfs_page_tree;
unsigned int ncommit,
unsigned long ncommit,
npages;
/* Open contexts for shared mmap writes */