don't put symlink bodies in pagecache into highmem

[deliverable/linux.git] / fs / btrfs / inode.c

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 994490d5fa6423dee4971e0ff013777d853fe6a6..70f98bfde27757e50b20433a402b12f852a18f6e 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3774,6 +3774,7 @@ cache_acl:
                break;
        case S_IFLNK:
                inode->i_op = &btrfs_symlink_inode_operations;
+               inode_nohighmem(inode);
                inode->i_mapping->a_ops = &btrfs_symlink_aops;
                break;
        default:
@@ -4046,9 +4047,7 @@ int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
  */
 static struct btrfs_trans_handle *__unlink_start_trans(struct inode *dir)
 {
-       struct btrfs_trans_handle *trans;
        struct btrfs_root *root = BTRFS_I(dir)->root;
-       int ret;
 
        /*
         * 1 for the possible orphan item
@@ -4057,27 +4056,7 @@ static struct btrfs_trans_handle *__unlink_start_trans(struct inode *dir)
         * 1 for the inode ref
         * 1 for the inode
         */
-       trans = btrfs_start_transaction(root, 5);
-       if (!IS_ERR(trans) || PTR_ERR(trans) != -ENOSPC)
-               return trans;
-
-       if (PTR_ERR(trans) == -ENOSPC) {
-               u64 num_bytes = btrfs_calc_trans_metadata_size(root, 5);
-
-               trans = btrfs_start_transaction(root, 0);
-               if (IS_ERR(trans))
-                       return trans;
-               ret = btrfs_cond_migrate_bytes(root->fs_info,
-                                              &root->fs_info->trans_block_rsv,
-                                              num_bytes, 5);
-               if (ret) {
-                       btrfs_end_transaction(trans, root);
-                       return ERR_PTR(ret);
-               }
-               trans->block_rsv = &root->fs_info->trans_block_rsv;
-               trans->bytes_reserved = num_bytes;
-       }
-       return trans;
+       return btrfs_start_transaction_fallback_global_rsv(root, 5, 5);
 }
 
 static int btrfs_unlink(struct inode *dir, struct dentry *dentry)
@@ -9727,6 +9706,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
        btrfs_free_path(path);
 
        inode->i_op = &btrfs_symlink_inode_operations;
+       inode_nohighmem(inode);
        inode->i_mapping->a_ops = &btrfs_symlink_aops;
        inode_set_bytes(inode, name_len);
        btrfs_i_size_write(inode, name_len);