diff options
Diffstat (limited to 'fs/hfsplus/bnode.c')
| -rw-r--r-- | fs/hfsplus/bnode.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c index 285502af8df1..759708fd9331 100644 --- a/fs/hfsplus/bnode.c +++ b/fs/hfsplus/bnode.c @@ -646,8 +646,8 @@ void hfs_bnode_put(struct hfs_bnode *node) if (test_bit(HFS_BNODE_DELETED, &node->flags)) { hfs_bnode_unhash(node); spin_unlock(&tree->hash_lock); - hfs_bnode_clear(node, 0, - PAGE_CACHE_SIZE * tree->pages_per_bnode); + if (hfs_bnode_need_zeroout(tree)) + hfs_bnode_clear(node, 0, tree->node_size); hfs_bmap_free(node); hfs_bnode_free(node); return; @@ -656,3 +656,16 @@ void hfs_bnode_put(struct hfs_bnode *node) } } +/* + * Unused nodes have to be zeroed if this is the catalog tree and + * a corresponding flag in the volume header is set. + */ +bool hfs_bnode_need_zeroout(struct hfs_btree *tree) +{ + struct super_block *sb = tree->inode->i_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + const u32 volume_attr = be32_to_cpu(sbi->s_vhdr->attributes); + + return tree->cnid == HFSPLUS_CAT_CNID && + volume_attr & HFSPLUS_VOL_UNUSED_NODE_FIX; +} |