提交 38b8ff7d 编写于 作者: J Jan Kara 提交者: Theodore Ts'o

ext4: Remove wait for unwritten extents in ext4_ind_direct_IO()

We don't have to wait for unwritten extent conversion in
ext4_ind_direct_IO() as all writes that happened before DIO are
flushed by the generic code and extent conversion has happened before
we cleared PageWriteback bit.
Reviewed-by: NZheng Liu <wenqing.lz@taobao.com>
Signed-off-by: NJan Kara <jack@suse.cz>
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
上级 92e6222d
......@@ -675,11 +675,6 @@ ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,
retry:
if (rw == READ && ext4_should_dioread_nolock(inode)) {
if (unlikely(atomic_read(&EXT4_I(inode)->i_unwritten))) {
mutex_lock(&inode->i_mutex);
ext4_flush_unwritten_io(inode);
mutex_unlock(&inode->i_mutex);
}
/*
* Nolock dioread optimization may be dynamically disabled
* via ext4_inode_block_unlocked_dio(). Check inode's state
......
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