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authorDavid Rientjes <rientjes@google.com>2009-01-06 14:39:29 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 15:59:02 -0800
commit364aeb2849789b51bf4b9af2ddd02fee7285c54e (patch)
tree4a24ea43a2a76ae744571f3c7b5022aa1107599e /mm/backing-dev.c
parent58a01a45721bf7bd3a41a86248c3cb02a6b0c501 (diff)
downloadconfigs-364aeb2849789b51bf4b9af2ddd02fee7285c54e.tar.gz
mm: change dirty limit type specifiers to unsigned long
The background dirty and dirty limits are better defined with type specifiers of unsigned long since negative writeback thresholds are not possible. These values, as returned by get_dirty_limits(), are normally compared with ZVC values to determine whether writeback shall commence or be throttled. Such page counts cannot be negative, so declaring the page limits as signed is unnecessary. Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Dave Chinner <david@fromorbit.com> Cc: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: David Rientjes <rientjes@google.com> Cc: Andrea Righi <righi.andrea@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/backing-dev.c')
-rw-r--r--mm/backing-dev.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 801c08b046e..6f80beddd8a 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -24,9 +24,9 @@ static void bdi_debug_init(void)
static int bdi_debug_stats_show(struct seq_file *m, void *v)
{
struct backing_dev_info *bdi = m->private;
- long background_thresh;
- long dirty_thresh;
- long bdi_thresh;
+ unsigned long background_thresh;
+ unsigned long dirty_thresh;
+ unsigned long bdi_thresh;
get_dirty_limits(&background_thresh, &dirty_thresh, &bdi_thresh, bdi);