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ext4: Remove wait for unwritten extents in ext4_ind_direct_IO()

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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>
This commit is contained in:
Jan Kara 2013-06-04 14:41:29 -04:00 committed by Theodore Ts'o
parent 92e6222dfb
commit 38b8ff7db4
1 changed files with 0 additions and 5 deletions
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5
fs/ext4/indirect.c
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@ -675,11 +675,6 @@ ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,
retry: retry:
if (rw == READ && ext4_should_dioread_nolock(inode)) { 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 * Nolock dioread optimization may be dynamically disabled
* via ext4_inode_block_unlocked_dio(). Check inode's state * via ext4_inode_block_unlocked_dio(). Check inode's state