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authorEric Sandeen <sandeen@redhat.com>2010-10-27 21:30:03 -0400
committerTheodore Ts'o <tytso@mit.edu>2010-10-27 21:30:03 -0400
commitb443e7339aa08574d30b0819b344618459c76214 (patch)
tree3c89ccd60deee6184b5cc9cf2bbb78291952b047 /fs/ext4
parent659c6009ca2e3a01acc9881bafe5f55ef09c965b (diff)
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 <sandeen@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/inode.c9
1 files changed, 6 insertions, 3 deletions
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)