ext4: split ext4_ind_truncate from ext4_truncate

We are about to move all indirect inode functions to a new file.
Before we do that, let's split ext4_ind_truncate() out of ext4_truncate()
leaving only generic code in the latter, so we will be able to move
ext4_ind_truncate() to the new file.

Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

2 files changed, 22 insertions, 16 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 1921392cd708..8532dd43d320 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1834,6 +1834,8 @@ extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
 extern qsize_t *ext4_get_reserved_space(struct inode *inode);
 extern void ext4_da_update_reserve_space(struct inode *inode,
                                         int used, int quota_claim);
+extern void ext4_ind_truncate(struct inode *inode);
+
 /* ioctl.c */
 extern long ext4_ioctl(struct file *, unsigned int, unsigned long);
 extern long ext4_compat_ioctl(struct file *, unsigned int, unsigned long);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index e3126c051006..a8f310b77f56 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4471,6 +4471,26 @@ int ext4_punch_hole(struct file *file, loff_t offset, loff_t length)
  */
 void ext4_truncate(struct inode *inode)
 {
+        trace_ext4_truncate_enter(inode);
+
+        if (!ext4_can_truncate(inode))
+                return;
+
+        ext4_clear_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
+
+        if (inode->i_size == 0 && !test_opt(inode->i_sb, NO_AUTO_DA_ALLOC))
+                ext4_set_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE);
+
+        if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
+                ext4_ext_truncate(inode);
+        else
+                ext4_ind_truncate(inode);
+
+        trace_ext4_truncate_exit(inode);
+}
+
+void ext4_ind_truncate(struct inode *inode)
+{
         handle_t *handle;
         struct ext4_inode_info *ei = EXT4_I(inode);
         __le32 *i_data = ei->i_data;
@@ -4484,22 +4504,6 @@ void ext4_truncate(struct inode *inode)
         ext4_lblk_t last_block, max_block;
         unsigned blocksize = inode->i_sb->s_blocksize;
 
-        trace_ext4_truncate_enter(inode);
-
-        if (!ext4_can_truncate(inode))
-                return;
-
-        ext4_clear_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
-
-        if (inode->i_size == 0 && !test_opt(inode->i_sb, NO_AUTO_DA_ALLOC))
-                ext4_set_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE);
-
-        if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
-                ext4_ext_truncate(inode);
-                trace_ext4_truncate_exit(inode);
-                return;
-        }
-
         handle = start_transaction(inode);
         if (IS_ERR(handle))
                 return;         /* AKPM: return what? */