UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

writeback: fix ppc compile warnings on do_div(long long, unsigned long) 

Fix powerpc compile warnings

mm/page-writeback.c: In function 'bdi_position_ratio':
mm/page-writeback.c:622:3: warning: comparison of distinct pointer types lacks a cast [enabled by default]
page-writeback.c:635:4: warning: comparison of distinct pointer types lacks a cast [enabled by default]

Also fix gcc "uninitialized var" warnings.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
This commit is contained in:
Wu Fengguang 2011-10-11 17:06:33 -06:00
parent b00949aa2d
commit 50657fc4df
1 changed files with 7 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
mm/page-writeback.c
View File

@ -618,8 +618,8 @@ static unsigned long bdi_position_ratio(struct backing_dev_info *bdi,
x_intercept = bdi_setpoint + span;
if (bdi_dirty < x_intercept - span / 4) {
pos_ratio *= x_intercept - bdi_dirty;
do_div(pos_ratio, x_intercept - bdi_setpoint + 1);
pos_ratio = div_u64(pos_ratio * (x_intercept - bdi_dirty),
x_intercept - bdi_setpoint + 1);
} else
pos_ratio /= 4;
@ -630,10 +630,9 @@ static unsigned long bdi_position_ratio(struct backing_dev_info *bdi,
*/
x_intercept = bdi_thresh / 2;
if (bdi_dirty < x_intercept) {
if (bdi_dirty > x_intercept / 8) {
pos_ratio *= x_intercept;
do_div(pos_ratio, bdi_dirty);
} else
if (bdi_dirty > x_intercept / 8)
pos_ratio = div_u64(pos_ratio * x_intercept, bdi_dirty);
else
pos_ratio *= 8;
}
@ -1010,10 +1009,10 @@ static void balance_dirty_pages(struct address_space *mapping,
unsigned long dirty_thresh;
unsigned long bdi_thresh;
long pause = 0;
long max_pause;
long uninitialized_var(max_pause);
bool dirty_exceeded = false;
unsigned long task_ratelimit;
unsigned long dirty_ratelimit;
unsigned long uninitialized_var(dirty_ratelimit);
unsigned long pos_ratio;
struct backing_dev_info *bdi = mapping->backing_dev_info;
unsigned long start_time = jiffies;