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Commit b7adc1f3 authored by Jiaying Zhang's avatar Jiaying Zhang Committed by Theodore Ts'o
Browse files

ext4: Use direct_IO_no_locking in ext4 dio read 



Signed-off-by: default avatarJiaying Zhang <jiayingz@google.com>
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent 744692dc

fs/ext4/inode.c

+8 −1
Original line number Diff line number Diff line
@@ -3474,7 +3474,14 @@ static ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb, 
	}



retry:

	ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,

	if (rw == READ && ext4_should_dioread_nolock(inode))

		ret = blockdev_direct_IO_no_locking(rw, iocb, inode,

				 inode->i_sb->s_bdev, iov,

				 offset, nr_segs,

				 ext4_get_block, NULL);

	else

		ret = blockdev_direct_IO(rw, iocb, inode,

				 inode->i_sb->s_bdev, iov,

				 offset, nr_segs,

				 ext4_get_block, NULL);

	if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))