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-rw-r--r--fs/ubifs/io.c34
1 files changed, 21 insertions, 13 deletions
diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
index e8e632a..bc58571 100644
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -293,13 +293,14 @@ void ubifs_prep_grp_node(struct ubifs_info *c, void *node, int len, int last)
*
* This function is called when the write-buffer timer expires.
*/
-static void wbuf_timer_callback_nolock(unsigned long data)
+static enum hrtimer_restart wbuf_timer_callback_nolock(struct hrtimer *timer)
{
- struct ubifs_wbuf *wbuf = (struct ubifs_wbuf *)data;
+ struct ubifs_wbuf *wbuf = container_of(timer, struct ubifs_wbuf, timer);
wbuf->need_sync = 1;
wbuf->c->need_wbuf_sync = 1;
ubifs_wake_up_bgt(wbuf->c);
+ return HRTIMER_NORESTART;
}
/**
@@ -308,13 +309,12 @@ static void wbuf_timer_callback_nolock(unsigned long data)
*/
static void new_wbuf_timer_nolock(struct ubifs_wbuf *wbuf)
{
- ubifs_assert(!timer_pending(&wbuf->timer));
+ ubifs_assert(!hrtimer_active(&wbuf->timer));
- if (!wbuf->timeout)
+ if (!ktime_to_ns(wbuf->softlimit))
return;
-
- wbuf->timer.expires = jiffies + wbuf->timeout;
- add_timer(&wbuf->timer);
+ hrtimer_start_range_ns(&wbuf->timer, wbuf->softlimit, wbuf->delta,
+ HRTIMER_MODE_REL);
}
/**
@@ -329,7 +329,7 @@ static void cancel_wbuf_timer_nolock(struct ubifs_wbuf *wbuf)
* should be canceled.
*/
wbuf->need_sync = 0;
- del_timer(&wbuf->timer);
+ hrtimer_cancel(&wbuf->timer);
}
/**
@@ -825,6 +825,7 @@ out:
int ubifs_wbuf_init(struct ubifs_info *c, struct ubifs_wbuf *wbuf)
{
size_t size;
+ ktime_t hardlimit;
wbuf->buf = kmalloc(c->min_io_size, GFP_KERNEL);
if (!wbuf->buf)
@@ -845,14 +846,21 @@ int ubifs_wbuf_init(struct ubifs_info *c, struct ubifs_wbuf *wbuf)
wbuf->sync_callback = NULL;
mutex_init(&wbuf->io_mutex);
spin_lock_init(&wbuf->lock);
-
wbuf->c = c;
- init_timer(&wbuf->timer);
- wbuf->timer.function = wbuf_timer_callback_nolock;
- wbuf->timer.data = (unsigned long)wbuf;
- wbuf->timeout = DEFAULT_WBUF_TIMEOUT;
wbuf->next_ino = 0;
+ hrtimer_init(&wbuf->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ wbuf->timer.function = wbuf_timer_callback_nolock;
+ /*
+ * Make write-buffer soft limit to be 20% of the hard limit. The
+ * write-buffer timer is allowed to expire any time between the soft
+ * and hard limits.
+ */
+ hardlimit = ktime_set(DEFAULT_WBUF_TIMEOUT_SECS, 0);
+ wbuf->delta = (DEFAULT_WBUF_TIMEOUT_SECS * NSEC_PER_SEC) * 2 / 10;
+ wbuf->softlimit = ktime_sub_ns(hardlimit, wbuf->delta);
+ hrtimer_set_expires_range_ns(&wbuf->timer, wbuf->softlimit,
+ wbuf->delta);
return 0;
}
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