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dm: use time_in_range() and time_after()

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To be future-proof and for better readability the time comparisons are modified
to use time_in_range() and time_after() instead of plain, error-prone math.

Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Manuel Schölling 2014-05-22 22:42:37 +02:00 committed by Mike Snitzer
parent 3ca5a21a9c
commit 0f30af98cb
3 changed files with 9 additions and 6 deletions
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5
drivers/md/dm-cache-target.c
View File

@ -11,6 +11,7 @@
#include <linux/dm-io.h>
#include <linux/dm-kcopyd.h>
#include <linux/jiffies.h>
#include <linux/init.h>
#include <linux/mempool.h>
#include <linux/module.h>
@ -1547,8 +1548,8 @@ static void process_bio(struct cache *cache, struct prealloc *structs,
static int need_commit_due_to_time(struct cache *cache)
{
return jiffies < cache->last_commit_jiffies ||
jiffies > cache->last_commit_jiffies + COMMIT_PERIOD;
return !time_in_range(jiffies, cache->last_commit_jiffies,
cache->last_commit_jiffies + COMMIT_PERIOD);
}
static int commit_if_needed(struct cache *cache)

5
drivers/md/dm-log-userspace-base.c
View File

@ -6,6 +6,7 @@
#include <linux/bio.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/dm-dirty-log.h>
#include <linux/device-mapper.h>
#include <linux/dm-log-userspace.h>
@ -829,7 +830,7 @@ static int userspace_is_remote_recovering(struct dm_dirty_log *log,
int r;
uint64_t region64 = region;
struct log_c *lc = log->context;
static unsigned long long limit;
static unsigned long limit;
struct {
int64_t is_recovering;
uint64_t in_sync_hint;
@ -845,7 +846,7 @@ static int userspace_is_remote_recovering(struct dm_dirty_log *log,
*/
if (region < lc->in_sync_hint)
return 0;
else if (jiffies < limit)
else if (time_after(limit, jiffies))
return 1;
limit = jiffies + (HZ / 4);

5
drivers/md/dm-thin.c
View File

@ -11,6 +11,7 @@
#include <linux/device-mapper.h>
#include <linux/dm-io.h>
#include <linux/dm-kcopyd.h>
#include <linux/jiffies.h>
#include <linux/log2.h>
#include <linux/list.h>
#include <linux/rculist.h>
@ -1700,8 +1701,8 @@ static void process_cell_fail(struct thin_c *tc, struct dm_bio_prison_cell *cell
*/
static int need_commit_due_to_time(struct pool *pool)
{
return jiffies < pool->last_commit_jiffies ||
jiffies > pool->last_commit_jiffies + COMMIT_PERIOD;
return !time_in_range(jiffies, pool->last_commit_jiffies,
pool->last_commit_jiffies + COMMIT_PERIOD);
}
#define thin_pbd(node) rb_entry((node), struct dm_thin_endio_hook, rb_node)