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, 0 insertions, 19 deletions

diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 6ee5bd389405..ce8c15a7eabc 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -46,25 +46,6 @@ void ext4_exit_pageio(void)
 }
 
 /*
- * This function is called by ext4_evict_inode() to make sure there is
- * no more pending I/O completion work left to do.
- */
-void ext4_ioend_shutdown(struct inode *inode)
-{
-        wait_queue_head_t *wq = ext4_ioend_wq(inode);
-
-        wait_event(*wq, (atomic_read(&EXT4_I(inode)->i_ioend_count) == 0));
-        /*
-         * We need to make sure the work structure is finished being
-         * used before we let the inode get destroyed.
-         */
-        if (work_pending(&EXT4_I(inode)->i_rsv_conversion_work))
-                cancel_work_sync(&EXT4_I(inode)->i_rsv_conversion_work);
-        if (work_pending(&EXT4_I(inode)->i_unrsv_conversion_work))
-                cancel_work_sync(&EXT4_I(inode)->i_unrsv_conversion_work);
-}
-
-/*
  * Print an buffer I/O error compatible with the fs/buffer.c.  This
  * provides compatibility with dmesg scrapers that look for a specific
  * buffer I/O error message.  We really need a unified error reporting