1 files changed, 11 insertions, 1 deletions

diff --git a/fs/logfs/super.c b/fs/logfs/super.c
index d128a2c1c8d1..94d80f7ee7c2 100644
--- a/fs/logfs/super.c
+++ b/fs/logfs/super.c
@@ -317,6 +317,7 @@ static int logfs_make_writeable(struct super_block *sb)
 
 static int logfs_get_sb_final(struct super_block *sb, struct vfsmount *mnt)
 {
+        struct logfs_super *super = logfs_super(sb);
         struct inode *rootdir;
         int err;
 
@@ -329,15 +330,22 @@ static int logfs_get_sb_final(struct super_block *sb, struct vfsmount *mnt)
         if (!sb->s_root)
                 goto fail;
 
+        super->s_erase_page = alloc_pages(GFP_KERNEL, 0);
+        if (!super->s_erase_page)
+                goto fail2;
+        memset(page_address(super->s_erase_page), 0xFF, PAGE_SIZE);
+
         /* FIXME: check for read-only mounts */
         err = logfs_make_writeable(sb);
         if (err)
-                goto fail2;
+                goto fail3;
 
         log_super("LogFS: Finished mounting\n");
         simple_set_mnt(mnt, sb);
         return 0;
 
+fail3:
+        __free_page(super->s_erase_page);
 fail2:
         iput(rootdir);
 fail:
@@ -498,6 +506,8 @@ static void logfs_kill_sb(struct super_block *sb)
         logfs_cleanup_journal(sb);
         logfs_cleanup_areas(sb);
         logfs_cleanup_rw(sb);
+        if (super->s_erase_page)
+                __free_page(super->s_erase_page);
         super->s_devops->put_device(sb);
         mempool_destroy(super->s_btree_pool);
         mempool_destroy(super->s_alias_pool);