The patch titled
mm/page-writeback.c: dirty limit type should be unsigned long
has been removed from the -mm tree. Its filename was
mm-page-writebackc-dirty-limit-type-should-be-unsigned-long.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
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Subject: mm/page-writeback.c: dirty limit type should be unsigned long
From: "H Hartley Sweeten" <hartleys@xxxxxxxxxxxxxxxxxxx>
get_dirty_limits() calls clip_bdi_dirty_limit() and task_dirty_limit()
with variable pbdi_dirty as one of the arguments. This variable is an
unsigned long * but both functions expect it to be a long *. This causes
the following sparse warnings:
warning: incorrect type in argument 3 (different signedness)
expected long *pbdi_dirty
got unsigned long *pbdi_dirty
warning: incorrect type in argument 2 (different signedness)
expected long *pdirty
got unsigned long *pbdi_dirty
Fix the warnings by changing the long * to unsigned long * in both
functions.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page-writeback.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
diff -puN mm/page-writeback.c~mm-page-writebackc-dirty-limit-type-should-be-unsigned-long mm/page-writeback.c
--- a/mm/page-writeback.c~mm-page-writebackc-dirty-limit-type-should-be-unsigned-long
+++ a/mm/page-writeback.c
@@ -265,18 +265,19 @@ static void bdi_writeout_fraction(struct
* This avoids exceeding the total dirty_limit when the floating averages
* fluctuate too quickly.
*/
-static void
-clip_bdi_dirty_limit(struct backing_dev_info *bdi, long dirty, long *pbdi_dirty)
+static void clip_bdi_dirty_limit(struct backing_dev_info *bdi,
+ unsigned long dirty, unsigned long *pbdi_dirty)
{
- long avail_dirty;
+ unsigned long avail_dirty;
- avail_dirty = dirty -
- (global_page_state(NR_FILE_DIRTY) +
+ avail_dirty = global_page_state(NR_FILE_DIRTY) +
global_page_state(NR_WRITEBACK) +
global_page_state(NR_UNSTABLE_NFS) +
- global_page_state(NR_WRITEBACK_TEMP));
+ global_page_state(NR_WRITEBACK_TEMP);
- if (avail_dirty < 0)
+ if (avail_dirty < dirty)
+ avail_dirty = dirty - avail_dirty;
+ else
avail_dirty = 0;
avail_dirty += bdi_stat(bdi, BDI_RECLAIMABLE) +
@@ -299,10 +300,10 @@ static inline void task_dirties_fraction
*
* dirty -= (dirty/8) * p_{t}
*/
-static void task_dirty_limit(struct task_struct *tsk, long *pdirty)
+static void task_dirty_limit(struct task_struct *tsk, unsigned long *pdirty)
{
long numerator, denominator;
- long dirty = *pdirty;
+ unsigned long dirty = *pdirty;
u64 inv = dirty >> 3;
task_dirties_fraction(tsk, &numerator, &denominator);
_
Patches currently in -mm which might be from hartleys@xxxxxxxxxxxxxxxxxxx are
origin.patch
linux-next.patch
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