openwrtv3/target/linux/generic/backport-4.9/030-01-ubifs-Drop-softlimit-and-delta-fields-from-struct-ub.patch
John Crispin 74d00a8c38 kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused

Signed-off-by: John Crispin <john@phrozen.org>
2017-08-05 08:46:36 +02:00

82 lines
3.1 KiB
Diff

From 854826c9d526fd81077742c3b000e3f7fcaef3ce Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Tue, 20 Sep 2016 10:36:14 +0200
Subject: [PATCH] ubifs: Drop softlimit and delta fields from struct ubifs_wbuf
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
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>
---
fs/ubifs/io.c | 18 ++++++++++--------
fs/ubifs/ubifs.h | 5 -----
2 files changed, 10 insertions(+), 13 deletions(-)
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -452,16 +452,22 @@ static enum hrtimer_restart wbuf_timer_c
*/
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
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;
}
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -645,9 +645,6 @@ typedef int (*ubifs_lpt_scan_callback)(s
* @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;