diff options
Diffstat (limited to 'mm/backing-dev.c')
| -rw-r--r-- | mm/backing-dev.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index ed173b8ae8f2..efe237742074 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -947,24 +947,24 @@ long congestion_wait(int sync, long timeout) EXPORT_SYMBOL(congestion_wait); /** - * wait_iff_congested - Conditionally wait for a backing_dev to become uncongested or a zone to complete writes - * @zone: A zone to check if it is heavily congested + * wait_iff_congested - Conditionally wait for a backing_dev to become uncongested or a pgdat to complete writes + * @pgdat: A pgdat to check if it is heavily congested * @sync: SYNC or ASYNC IO * @timeout: timeout in jiffies * * In the event of a congested backing_dev (any backing_dev) and the given - * @zone has experienced recent congestion, this waits for up to @timeout + * @pgdat has experienced recent congestion, this waits for up to @timeout * jiffies for either a BDI to exit congestion of the given @sync queue * or a write to complete. * - * In the absence of zone congestion, cond_resched() is called to yield + * In the absence of pgdat congestion, cond_resched() is called to yield * the processor if necessary but otherwise does not sleep. * * The return value is 0 if the sleep is for the full timeout. Otherwise, * it is the number of jiffies that were still remaining when the function * returned. return_value == timeout implies the function did not sleep. */ -long wait_iff_congested(struct zone *zone, int sync, long timeout) +long wait_iff_congested(struct pglist_data *pgdat, int sync, long timeout) { long ret; unsigned long start = jiffies; @@ -973,12 +973,13 @@ long wait_iff_congested(struct zone *zone, int sync, long timeout) /* * If there is no congestion, or heavy congestion is not being - * encountered in the current zone, yield if necessary instead + * encountered in the current pgdat, yield if necessary instead * of sleeping on the congestion queue */ if (atomic_read(&nr_wb_congested[sync]) == 0 || - !test_bit(ZONE_CONGESTED, &zone->flags)) { + !test_bit(PGDAT_CONGESTED, &pgdat->flags)) { cond_resched(); + /* In case we scheduled, work out time remaining */ ret = timeout - (jiffies - start); if (ret < 0) |