Commit 38b8ff7d authored Jun 04, 2013 by Jan Kara Committed by Theodore Ts'o Jun 04, 2013

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

parent 92e6222d

fs/ext4/indirect.c

+0 −5

Original line number	Diff line number	Diff line
		@@ -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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