ext4: remove ext4_ioend_wait()

Now that we clear PageWriteback after extent conversion, there's no
need to wait for io_end processing in ext4_evict_inode().  Running
AIO/DIO keeps file reference until aio_complete() is called so
ext4_evict_inode() cannot be called.  For io_end structures resulting
from buffered IO waiting is happening because we wait for
PageWriteback in truncate_inode_pages().

Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index de6dd77f0c56..442c5d2e0978 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -215,7 +215,8 @@ void ext4_evict_inode(struct inode *inode)
                         filemap_write_and_wait(&inode->i_data);
                 }
                 truncate_inode_pages(&inode->i_data, 0);
-                ext4_ioend_shutdown(inode);
+
+                WARN_ON(atomic_read(&EXT4_I(inode)->i_ioend_count));
                 goto no_delete;
         }
 
@@ -225,8 +226,8 @@ void ext4_evict_inode(struct inode *inode)
         if (ext4_should_order_data(inode))
                 ext4_begin_ordered_truncate(inode, 0);
         truncate_inode_pages(&inode->i_data, 0);
-        ext4_ioend_shutdown(inode);
 
+        WARN_ON(atomic_read(&EXT4_I(inode)->i_ioend_count));
         if (is_bad_inode(inode))
                 goto no_delete;