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ubifs: Drop softlimit and delta fields from struct ubifs_wbuf

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Values of these fields are set during init and never modified. They are
used (read) in a single function only. There isn't really any reason to
keep them in a struct. It only makes struct just a bit bigger without
any visible gain.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Rafał Miłecki 2016-09-20 10:36:14 +02:00 committed by Richard Weinberger
parent 6a34e4d2be
commit 854826c9d5
2 changed files with 10 additions and 13 deletions
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18
fs/ubifs/io.c
View File

@ -452,16 +452,22 @@ static enum hrtimer_restart wbuf_timer_callback_nolock(struct hrtimer *timer)
*/
static void new_wbuf_timer_nolock(struct ubifs_wbuf *wbuf)
{
ktime_t softlimit = ktime_set(WBUF_TIMEOUT_SOFTLIMIT, 0);
unsigned long long delta;
delta = WBUF_TIMEOUT_HARDLIMIT - WBUF_TIMEOUT_SOFTLIMIT;
delta *= 1000000000ULL;
ubifs_assert(!hrtimer_active(&wbuf->timer));
ubifs_assert(delta <= ULONG_MAX);
if (wbuf->no_timer)
return;
dbg_io("set timer for jhead %s, %llu-%llu millisecs",
dbg_jhead(wbuf->jhead),
div_u64(ktime_to_ns(wbuf->softlimit), USEC_PER_SEC),
div_u64(ktime_to_ns(wbuf->softlimit) + wbuf->delta,
USEC_PER_SEC));
hrtimer_start_range_ns(&wbuf->timer, wbuf->softlimit, wbuf->delta,
div_u64(ktime_to_ns(softlimit), USEC_PER_SEC),
div_u64(ktime_to_ns(softlimit) + delta, USEC_PER_SEC));
hrtimer_start_range_ns(&wbuf->timer, softlimit, delta,
HRTIMER_MODE_REL);
}
@ -1059,10 +1065,6 @@ int ubifs_wbuf_init(struct ubifs_info *c, struct ubifs_wbuf *wbuf)
hrtimer_init(&wbuf->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
wbuf->timer.function = wbuf_timer_callback_nolock;
wbuf->softlimit = ktime_set(WBUF_TIMEOUT_SOFTLIMIT, 0);
wbuf->delta = WBUF_TIMEOUT_HARDLIMIT - WBUF_TIMEOUT_SOFTLIMIT;
wbuf->delta *= 1000000000ULL;
ubifs_assert(wbuf->delta <= ULONG_MAX);
return 0;
}

5
fs/ubifs/ubifs.h
View File

@ -645,9 +645,6 @@ typedef int (*ubifs_lpt_scan_callback)(struct ubifs_info *c,
* @io_mutex: serializes write-buffer I/O
* @lock: serializes @buf, @lnum, @offs, @avail, @used, @next_ino and @inodes
* fields
* @softlimit: soft write-buffer timeout interval
* @delta: hard and soft timeouts delta (the timer expire interval is @softlimit
* and @softlimit + @delta)
* @timer: write-buffer timer
* @no_timer: non-zero if this write-buffer does not have a timer
* @need_sync: non-zero if the timer expired and the wbuf needs sync'ing
@ -676,8 +673,6 @@ struct ubifs_wbuf {
int (*sync_callback)(struct ubifs_info *c, int lnum, int free, int pad);
struct mutex io_mutex;
spinlock_t lock;
ktime_t softlimit;
unsigned long long delta;
struct hrtimer timer;
unsigned int no_timer:1;
unsigned int need_sync:1;