pata_amd: fix an obvious bug in cable detection

[powerpc.git] / fs / jfs / jfs_xtree.c

diff --git a/fs/jfs/jfs_xtree.c b/fs/jfs/jfs_xtree.c
index e98eb03..acc97c4 100644 (file)
--- a/fs/jfs/jfs_xtree.c
+++ b/fs/jfs/jfs_xtree.c
@@ -757,6 +757,11 @@ static int xtSearch(struct inode *ip, s64 xoff,    s64 *nextp,
                        nsplit = 0;
 
                /* push (bn, index) of the parent page/entry */
+               if (BT_STACK_FULL(btstack)) {
+                       jfs_error(ip->i_sb, "stack overrun in xtSearch!");
+                       XT_PUTPAGE(mp);
+                       return -EIO;
+               }
                BT_PUSH(btstack, bn, index);
 
                /* get the child page block number */
@@ -3915,6 +3920,11 @@ s64 xtTruncate(tid_t tid, struct inode *ip, s64 newsize, int flag)
         */
       getChild:
        /* save current parent entry for the child page */
+       if (BT_STACK_FULL(&btstack)) {
+               jfs_error(ip->i_sb, "stack overrun in xtTruncate!");
+               XT_PUTPAGE(mp);
+               return -EIO;
+       }
        BT_PUSH(&btstack, bn, index);
 
        /* get child page */
@@ -4112,6 +4122,11 @@ s64 xtTruncate_pmap(tid_t tid, struct inode *ip, s64 committed_size)
         */
       getChild:
        /* save current parent entry for the child page */
+       if (BT_STACK_FULL(&btstack)) {
+               jfs_error(ip->i_sb, "stack overrun in xtTruncate_pmap!");
+               XT_PUTPAGE(mp);
+               return -EIO;
+       }
        BT_PUSH(&btstack, bn, index);
 
        /* get child page */