1 files changed, 15 insertions, 0 deletions

diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h
index 300ada3f21de..6720d7d5fbc6 100644
--- a/fs/gfs2/inode.h
+++ b/fs/gfs2/inode.h
@@ -19,6 +19,8 @@ extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
 extern int gfs2_internal_read(struct gfs2_inode *ip,
                               struct file_ra_state *ra_state,
                               char *buf, loff_t *pos, unsigned size);
+extern void gfs2_page_add_databufs(struct gfs2_inode *ip, struct page *page,
+                                   unsigned int from, unsigned int to);
 extern void gfs2_set_aops(struct inode *inode);
 
 static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
@@ -80,6 +82,19 @@ static inline void gfs2_inum_out(const struct gfs2_inode *ip,
         dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
 }
 
+static inline int gfs2_check_internal_file_size(struct inode *inode,
+                                                u64 minsize, u64 maxsize)
+{
+        u64 size = i_size_read(inode);
+        if (size < minsize || size > maxsize)
+                goto err;
+        if (size & ((1 << inode->i_blkbits) - 1))
+                goto err;
+        return 0;
+err:
+        gfs2_consist_inode(GFS2_I(inode));
+        return -EIO;
+}
 
 extern void gfs2_set_iop(struct inode *inode);
 extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,