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writeback: add @gfp to wb_init() 

wb_init() currently always uses GFP_KERNEL but the planned cgroup
writeback support needs using other allocation masks.  Add @gfp to
wb_init().

This patch doesn't introduce any behavior changes.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Tejun Heo 2015-05-22 17:13:34 -04:00 committed by Jens Axboe
parent a212b105b0
commit 8395cd9f81
1 changed files with 5 additions and 4 deletions
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9
mm/backing-dev.c
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@ -291,7 +291,8 @@ void wb_wakeup_delayed(struct bdi_writeback *wb)
*/
#define INIT_BW (100 << (20 - PAGE_SHIFT))
static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi)
static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi,
gfp_t gfp)
{
int i, err;
@ -315,12 +316,12 @@ static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi)
INIT_LIST_HEAD(&wb->work_list);
INIT_DELAYED_WORK(&wb->dwork, wb_workfn);
err = fprop_local_init_percpu(&wb->completions, GFP_KERNEL);
err = fprop_local_init_percpu(&wb->completions, gfp);
if (err)
return err;
for (i = 0; i < NR_WB_STAT_ITEMS; i++) {
err = percpu_counter_init(&wb->stat[i], 0, GFP_KERNEL);
err = percpu_counter_init(&wb->stat[i], 0, gfp);
if (err) {
while (--i)
percpu_counter_destroy(&wb->stat[i]);
@ -378,7 +379,7 @@ int bdi_init(struct backing_dev_info *bdi)
bdi->max_prop_frac = FPROP_FRAC_BASE;
INIT_LIST_HEAD(&bdi->bdi_list);
err = wb_init(&bdi->wb, bdi);
err = wb_init(&bdi->wb, bdi, GFP_KERNEL);
if (err)
return err;