[PATCH] hfs: don't reference missing page

If there was a read error, the bnode might miss some pages, so skip them.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 4 insertions, 0 deletions

diff --git a/fs/hfs/bnode.c b/fs/hfs/bnode.c
index 6ad1211f84ed..a096c5a56664 100644
--- a/fs/hfs/bnode.c
+++ b/fs/hfs/bnode.c
@@ -480,6 +480,8 @@ void hfs_bnode_put(struct hfs_bnode *node)
                         return;
                 }
                 for (i = 0; i < tree->pages_per_bnode; i++) {
+                        if (!node->page[i])
+                                continue;
                         mark_page_accessed(node->page[i]);
 #if REF_PAGES
                         put_page(node->page[i]);
diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c
index 267872e84d71..8868d3b766fd 100644
--- a/fs/hfsplus/bnode.c
+++ b/fs/hfsplus/bnode.c
@@ -643,6 +643,8 @@ void hfs_bnode_put(struct hfs_bnode *node)
                         return;
                 }
                 for (i = 0; i < tree->pages_per_bnode; i++) {
+                        if (!node->page[i])
+                                continue;
                         mark_page_accessed(node->page[i]);
 #if REF_PAGES
                         put_page(node->page[i]);