ufs: switch ufs_evict_inode() to trimmed-down variant of ufs_truncate()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/ufs/inode.c

@@ -884,14 +884,9 @@ void ufs_evict_inode(struct inode * inode)
 
 	truncate_inode_pages_final(&inode->i_data);
 	if (want_delete) {
-		loff_t old_i_size;
-		/*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
-		mark_inode_dirty(inode);
-		ufs_update_inode(inode, IS_SYNC(inode));
-		old_i_size = inode->i_size;
 		inode->i_size = 0;
-		if (inode->i_blocks && ufs_truncate(inode, old_i_size))
-			ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n");
+		if (inode->i_blocks)
+			ufs_truncate_blocks(inode);
 	}
 
 	invalidate_inode_buffers(inode);

fs/ufs/truncate.c

@@ -440,12 +440,36 @@ out:
        return err;
 }
 
-int ufs_truncate(struct inode *inode, loff_t old_i_size)
+static void __ufs_truncate_blocks(struct inode *inode)
 {
 	struct ufs_inode_info *ufsi = UFS_I(inode);
 	struct super_block *sb = inode->i_sb;
 	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
-	int retry, err = 0;
+	int retry;
+
+	while (1) {
+		retry = ufs_trunc_direct(inode);
+		retry |= ufs_trunc_indirect(inode, UFS_IND_BLOCK,
+					    ufs_get_direct_data_ptr(uspi, ufsi,
+								    UFS_IND_BLOCK));
+		retry |= ufs_trunc_dindirect(inode, UFS_IND_BLOCK + uspi->s_apb,
+					     ufs_get_direct_data_ptr(uspi, ufsi,
+								     UFS_DIND_BLOCK));
+		retry |= ufs_trunc_tindirect (inode);
+		if (!retry)
+			break;
+		if (IS_SYNC(inode) && (inode->i_state & I_DIRTY))
+			ufs_sync_inode (inode);
+		yield();
+	}
+
+	ufsi->i_lastfrag = DIRECT_FRAGMENT;
+}
+
+int ufs_truncate(struct inode *inode, loff_t old_i_size)
+{
+	struct super_block *sb = inode->i_sb;
+	int err = 0;
 	
 	UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n",
 	     inode->i_ino, (unsigned long long)i_size_read(inode),
@@ -467,24 +491,8 @@ int ufs_truncate(struct inode *inode, loff_t old_i_size)
 
 	block_truncate_page(inode->i_mapping, inode->i_size, ufs_getfrag_block);
 
-	while (1) {
-		retry = ufs_trunc_direct(inode);
-		retry |= ufs_trunc_indirect(inode, UFS_IND_BLOCK,
-					    ufs_get_direct_data_ptr(uspi, ufsi,
-								    UFS_IND_BLOCK));
-		retry |= ufs_trunc_dindirect(inode, UFS_IND_BLOCK + uspi->s_apb,
-					     ufs_get_direct_data_ptr(uspi, ufsi,
-								     UFS_DIND_BLOCK));
-		retry |= ufs_trunc_tindirect (inode);
-		if (!retry)
-			break;
-		if (IS_SYNC(inode) && (inode->i_state & I_DIRTY))
-			ufs_sync_inode (inode);
-		yield();
-	}
-
+	__ufs_truncate_blocks(inode);
 	inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
-	ufsi->i_lastfrag = DIRECT_FRAGMENT;
 	mark_inode_dirty(inode);
 out:
 	unlock_ufs(sb);
@@ -492,6 +500,20 @@ out:
 	return err;
 }
 
+void ufs_truncate_blocks(struct inode *inode)
+{
+	struct super_block *sb = inode->i_sb;
+	if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
+	      S_ISLNK(inode->i_mode)))
+		return;
+	if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
+		return;
+
+	lock_ufs(sb);
+	__ufs_truncate_blocks(inode);
+	unlock_ufs(sb);
+}
+
 int ufs_setattr(struct dentry *dentry, struct iattr *attr)
 {
 	struct inode *inode = d_inode(dentry);

fs/ufs/ufs.h

@@ -141,7 +141,7 @@ extern const struct inode_operations ufs_fast_symlink_inode_operations;
 extern const struct inode_operations ufs_symlink_inode_operations;
 
 /* truncate.c */
-extern int ufs_truncate (struct inode *, loff_t);
+extern void ufs_truncate_blocks(struct inode *);
 extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
 
 static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)