From b443e7339aa08574d30b0819b344618459c76214 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Wed, 27 Oct 2010 21:30:03 -0400 Subject: ext4: don't bump up LONG_MAX nr_to_write by a factor of 8 I'm uneasy with lots of stuff going on in ext4_da_writepages(), but bumping nr_to_write from LLONG_MAX to -8 clearly isn't making anything better, so avoid the multiplier in that case. Signed-off-by: Eric Sandeen Signed-off-by: "Theodore Ts'o" --- fs/ext4/inode.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'fs') diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index d88ba4a9eff..50f3bba68a2 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3004,9 +3004,12 @@ static int ext4_da_writepages(struct address_space *mapping, * sbi->max_writeback_mb_bump whichever is smaller. */ max_pages = sbi->s_max_writeback_mb_bump << (20 - PAGE_CACHE_SHIFT); - if (!range_cyclic && range_whole) - desired_nr_to_write = wbc->nr_to_write * 8; - else + if (!range_cyclic && range_whole) { + if (wbc->nr_to_write == LONG_MAX) + desired_nr_to_write = wbc->nr_to_write; + else + desired_nr_to_write = wbc->nr_to_write * 8; + } else desired_nr_to_write = ext4_num_dirty_pages(inode, index, max_pages); if (desired_nr_to_write > max_pages) -- cgit v1.2.3