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Commit 7b001d6a authored by Jan Kara's avatar Jan Kara Committed by Theodore Ts'o
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ext4: clear buffer_uninit flag when submitting IO 



Currently noone cleared buffer_uninit flag. This results in writeback
needlessly marking io_end as needing extent conversion scanning extent
tree for extents to convert. So clear the buffer_uninit flag once the
buffer is submitted for IO and the flag is transformed into
EXT4_IO_END_UNWRITTEN flag.

Signed-off-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: default avatarZheng Liu <wenqing.lz@taobao.com>
parent 4eec708d

fs/ext4/page-io.c

+1 −1
Original line number Diff line number Diff line
@@ -387,7 +387,7 @@ submit_and_retry: 
	if (ret != bh->b_size)

		goto submit_and_retry;

	io_end = io->io_end;

	if (buffer_uninit(bh))

	if (test_clear_buffer_uninit(bh))

		ext4_set_io_unwritten_flag(inode, io_end);

	io_end->size += bh->b_size;

	io->io_next_block++;