tree 16ce26b2c7bb9c2fcb598d7396069537d61da6b5
parent 5fe2fe895a9a6b857e2f3a7fc5b8f080b03fd55f
author Jan Kara <jack@suse.cz> 1370364624 -0400
committer Theodore Ts'o <tytso@mit.edu> 1370364624 -0400

ext4: stop messing with nr_to_write in ext4_da_writepages()

Writeback code got better in how it submits IO and now the number of
pages requested to be written is usually higher than original 1024.
The number is now dynamically computed based on observed throughput
and is set to be about 0.5 s worth of writeback.  E.g. on ordinary
SATA drive this ends up somewhere around 10000 as my testing shows.
So remove the unnecessary smarts from ext4_da_writepages().

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>