btrfs: set trans->drity in btrfs_commit_transaction

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / fs / inode.c

diff --git a/fs/inode.c b/fs/inode.c
index a39c272..00ec6db 100644 (file)
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -154,6 +154,12 @@ int inode_init_always(struct super_block *sb, struct inode *inode)
        inode->i_rdev = 0;
        inode->dirtied_when = 0;
 
+#ifdef CONFIG_CGROUP_WRITEBACK
+       inode->i_wb_frn_winner = 0;
+       inode->i_wb_frn_avg_time = 0;
+       inode->i_wb_frn_history = 0;
+#endif
+
        if (security_inode_alloc(inode))
                goto out;
        spin_lock_init(&inode->i_lock);
@@ -1738,8 +1744,13 @@ int file_remove_privs(struct file *file)
        int kill;
        int error = 0;
 
-       /* Fast path for nothing security related */
-       if (IS_NOSEC(inode))
+       /*
+        * Fast path for nothing security related.
+        * As well for non-regular files, e.g. blkdev inodes.
+        * For example, blkdev_write_iter() might get here
+        * trying to remove privs which it is not allowed to.
+        */
+       if (IS_NOSEC(inode) || !S_ISREG(inode->i_mode))
                return 0;
 
        kill = dentry_needs_remove_privs(dentry);