ext4: let ext4 maintain extent status tree

This patch lets ext4 maintain extent status tree.

Currently it only tracks delay extent status in extent status tree.  When a
delay allocation is issued, the related delay extent will be inserted into
extent status tree.  When a delay extent is written out or invalidated, it will
be removed from this tree.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: Allison Henderson <achender@linux.vnet.ibm.com>
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index dce97de6a409..67660fa2a7e6 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4344,6 +4344,8 @@ void ext4_ext_truncate(struct inode *inode)
 
         last_block = (inode->i_size + sb->s_blocksize - 1)
                         >> EXT4_BLOCK_SIZE_BITS(sb);
+        err = ext4_es_remove_extent(inode, last_block,
+                                    EXT_MAX_BLOCKS - last_block);
         err = ext4_ext_remove_space(inode, last_block, EXT_MAX_BLOCKS - 1);
 
         /* In a multi-transaction truncate, we only make the final
@@ -4971,6 +4973,8 @@ int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length)
         ext4_ext_invalidate_cache(inode);
         ext4_discard_preallocations(inode);
 
+        err = ext4_es_remove_extent(inode, first_block,
+                                    stop_block - first_block);
         err = ext4_ext_remove_space(inode, first_block, stop_block - 1);
 
         ext4_ext_invalidate_cache(inode);