ext4: cleanup block allocator

Move the code related to block allocation to a single function and add helper
funtions to differient allocation for data and meta data blocks

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 7 insertions, 3 deletions

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index c729b3507b46..555155d239df 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -179,8 +179,11 @@ static ext4_fsblk_t ext4_ext_find_goal(struct inode *inode,
         return bg_start + colour + block;
 }
 
+/*
+ * Allocation for a meta data block
+ */
 static ext4_fsblk_t
-ext4_ext_new_block(handle_t *handle, struct inode *inode,
+ext4_ext_new_meta_block(handle_t *handle, struct inode *inode,
                         struct ext4_ext_path *path,
                         struct ext4_extent *ex, int *err)
 {
@@ -690,7 +693,8 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
         /* allocate all needed blocks */
         ext_debug("allocate %d blocks for indexes/leaf\n", depth - at);
         for (a = 0; a < depth - at; a++) {
-                newblock = ext4_ext_new_block(handle, inode, path, newext, &err);
+                newblock = ext4_ext_new_meta_block(handle, inode, path,
+                                                   newext, &err);
                 if (newblock == 0)
                         goto cleanup;
                 ablocks[a] = newblock;
@@ -886,7 +890,7 @@ static int ext4_ext_grow_indepth(handle_t *handle, struct inode *inode,
         ext4_fsblk_t newblock;
         int err = 0;
 
-        newblock = ext4_ext_new_block(handle, inode, path, newext, &err);
+        newblock = ext4_ext_new_meta_block(handle, inode, path, newext, &err);
         if (newblock == 0)
                 return err;