diff options
Diffstat (limited to 'fs/nfs/file.c')
| -rw-r--r-- | fs/nfs/file.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 8eb731d9be3e..ccd9bc098806 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -489,7 +489,19 @@ static int nfs_launder_page(struct page *page) static int nfs_swap_activate(struct swap_info_struct *sis, struct file *file, sector_t *span) { + unsigned long blocks; + long long isize; struct rpc_clnt *clnt = NFS_CLIENT(file->f_mapping->host); + struct inode *inode = file->f_mapping->host; + + spin_lock(&inode->i_lock); + blocks = inode->i_blocks; + isize = inode->i_size; + spin_unlock(&inode->i_lock); + if (blocks*512 < isize) { + pr_warn("swap activate: swapfile has holes\n"); + return -EINVAL; + } *span = sis->pages; |