Commit 47e69351 authored Nov 20, 2016 by Jan Kara Committed by Theodore Ts'o Nov 20, 2016

ext4: use iomap for zeroing blocks in DAX mode



Use iomap infrastructure for zeroing blocks when in DAX mode.
ext4_iomap_begin() handles read requests just fine and that's all that
is needed for iomap_zero_range().

Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

parent 364443cb

fs/ext4/inode.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -3859,8 +3859,10 @@ static int ext4_block_zero_page_range(handle_t *handle,
		if (length > max \|\| length < 0)
		length = max;

		if (IS_DAX(inode))
		return dax_zero_page_range(inode, from, length, ext4_get_block);
		if (IS_DAX(inode)) {
		return iomap_zero_range(inode, from, length, NULL,
		&ext4_iomap_ops);
		}
		return __ext4_block_zero_page_range(handle, mapping, from, length);
		}