Lines Matching refs:wbuf
446 struct ubifs_wbuf *wbuf = container_of(timer, struct ubifs_wbuf, timer); in wbuf_timer_callback_nolock() local
448 dbg_io("jhead %s", dbg_jhead(wbuf->jhead)); in wbuf_timer_callback_nolock()
449 wbuf->need_sync = 1; in wbuf_timer_callback_nolock()
450 wbuf->c->need_wbuf_sync = 1; in wbuf_timer_callback_nolock()
451 ubifs_wake_up_bgt(wbuf->c); in wbuf_timer_callback_nolock()
459 static void new_wbuf_timer_nolock(struct ubifs_wbuf *wbuf) in new_wbuf_timer_nolock() argument
461 ubifs_assert(!hrtimer_active(&wbuf->timer)); in new_wbuf_timer_nolock()
463 if (wbuf->no_timer) in new_wbuf_timer_nolock()
466 dbg_jhead(wbuf->jhead), in new_wbuf_timer_nolock()
467 div_u64(ktime_to_ns(wbuf->softlimit), USEC_PER_SEC), in new_wbuf_timer_nolock()
468 div_u64(ktime_to_ns(wbuf->softlimit) + wbuf->delta, in new_wbuf_timer_nolock()
470 hrtimer_start_range_ns(&wbuf->timer, wbuf->softlimit, wbuf->delta, in new_wbuf_timer_nolock()
479 static void cancel_wbuf_timer_nolock(struct ubifs_wbuf *wbuf) in cancel_wbuf_timer_nolock() argument
481 if (wbuf->no_timer) in cancel_wbuf_timer_nolock()
483 wbuf->need_sync = 0; in cancel_wbuf_timer_nolock()
485 hrtimer_cancel(&wbuf->timer); in cancel_wbuf_timer_nolock()
502 int ubifs_wbuf_sync_nolock(struct ubifs_wbuf *wbuf) in ubifs_wbuf_sync_nolock() argument
504 struct ubifs_info *c = wbuf->c; in ubifs_wbuf_sync_nolock()
507 cancel_wbuf_timer_nolock(wbuf); in ubifs_wbuf_sync_nolock()
508 if (!wbuf->used || wbuf->lnum == -1) in ubifs_wbuf_sync_nolock()
513 wbuf->lnum, wbuf->offs, wbuf->used, dbg_jhead(wbuf->jhead)); in ubifs_wbuf_sync_nolock()
514 ubifs_assert(!(wbuf->avail & 7)); in ubifs_wbuf_sync_nolock()
515 ubifs_assert(wbuf->offs + wbuf->size <= c->leb_size); in ubifs_wbuf_sync_nolock()
516 ubifs_assert(wbuf->size >= c->min_io_size); in ubifs_wbuf_sync_nolock()
517 ubifs_assert(wbuf->size <= c->max_write_size); in ubifs_wbuf_sync_nolock()
518 ubifs_assert(wbuf->size % c->min_io_size == 0); in ubifs_wbuf_sync_nolock()
520 if (c->leb_size - wbuf->offs >= c->max_write_size) in ubifs_wbuf_sync_nolock()
521 ubifs_assert(!((wbuf->offs + wbuf->size) % c->max_write_size)); in ubifs_wbuf_sync_nolock()
530 sync_len = ALIGN(wbuf->used, c->min_io_size); in ubifs_wbuf_sync_nolock()
531 dirt = sync_len - wbuf->used; in ubifs_wbuf_sync_nolock()
533 ubifs_pad(c, wbuf->buf + wbuf->used, dirt); in ubifs_wbuf_sync_nolock()
534 err = ubifs_leb_write(c, wbuf->lnum, wbuf->buf, wbuf->offs, sync_len); in ubifs_wbuf_sync_nolock()
538 spin_lock(&wbuf->lock); in ubifs_wbuf_sync_nolock()
539 wbuf->offs += sync_len; in ubifs_wbuf_sync_nolock()
550 if (c->leb_size - wbuf->offs < c->max_write_size) in ubifs_wbuf_sync_nolock()
551 wbuf->size = c->leb_size - wbuf->offs; in ubifs_wbuf_sync_nolock()
552 else if (wbuf->offs & (c->max_write_size - 1)) in ubifs_wbuf_sync_nolock()
553 wbuf->size = ALIGN(wbuf->offs, c->max_write_size) - wbuf->offs; in ubifs_wbuf_sync_nolock()
555 wbuf->size = c->max_write_size; in ubifs_wbuf_sync_nolock()
556 wbuf->avail = wbuf->size; in ubifs_wbuf_sync_nolock()
557 wbuf->used = 0; in ubifs_wbuf_sync_nolock()
558 wbuf->next_ino = 0; in ubifs_wbuf_sync_nolock()
559 spin_unlock(&wbuf->lock); in ubifs_wbuf_sync_nolock()
561 if (wbuf->sync_callback) in ubifs_wbuf_sync_nolock()
562 err = wbuf->sync_callback(c, wbuf->lnum, in ubifs_wbuf_sync_nolock()
563 c->leb_size - wbuf->offs, dirt); in ubifs_wbuf_sync_nolock()
577 int ubifs_wbuf_seek_nolock(struct ubifs_wbuf *wbuf, int lnum, int offs) in ubifs_wbuf_seek_nolock() argument
579 const struct ubifs_info *c = wbuf->c; in ubifs_wbuf_seek_nolock()
581 dbg_io("LEB %d:%d, jhead %s", lnum, offs, dbg_jhead(wbuf->jhead)); in ubifs_wbuf_seek_nolock()
585 ubifs_assert(lnum != wbuf->lnum); in ubifs_wbuf_seek_nolock()
586 ubifs_assert(wbuf->used == 0); in ubifs_wbuf_seek_nolock()
588 spin_lock(&wbuf->lock); in ubifs_wbuf_seek_nolock()
589 wbuf->lnum = lnum; in ubifs_wbuf_seek_nolock()
590 wbuf->offs = offs; in ubifs_wbuf_seek_nolock()
591 if (c->leb_size - wbuf->offs < c->max_write_size) in ubifs_wbuf_seek_nolock()
592 wbuf->size = c->leb_size - wbuf->offs; in ubifs_wbuf_seek_nolock()
593 else if (wbuf->offs & (c->max_write_size - 1)) in ubifs_wbuf_seek_nolock()
594 wbuf->size = ALIGN(wbuf->offs, c->max_write_size) - wbuf->offs; in ubifs_wbuf_seek_nolock()
596 wbuf->size = c->max_write_size; in ubifs_wbuf_seek_nolock()
597 wbuf->avail = wbuf->size; in ubifs_wbuf_seek_nolock()
598 wbuf->used = 0; in ubifs_wbuf_seek_nolock()
599 spin_unlock(&wbuf->lock); in ubifs_wbuf_seek_nolock()
629 struct ubifs_wbuf *wbuf = &c->jheads[i].wbuf; in ubifs_bg_wbufs_sync() local
637 if (mutex_is_locked(&wbuf->io_mutex)) in ubifs_bg_wbufs_sync()
640 mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead); in ubifs_bg_wbufs_sync()
641 if (!wbuf->need_sync) { in ubifs_bg_wbufs_sync()
642 mutex_unlock(&wbuf->io_mutex); in ubifs_bg_wbufs_sync()
646 err = ubifs_wbuf_sync_nolock(wbuf); in ubifs_bg_wbufs_sync()
647 mutex_unlock(&wbuf->io_mutex); in ubifs_bg_wbufs_sync()
660 struct ubifs_wbuf *wbuf = &c->jheads[i].wbuf; in ubifs_bg_wbufs_sync() local
662 mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead); in ubifs_bg_wbufs_sync()
663 cancel_wbuf_timer_nolock(wbuf); in ubifs_bg_wbufs_sync()
664 mutex_unlock(&wbuf->io_mutex); in ubifs_bg_wbufs_sync()
685 int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len) in ubifs_wbuf_write_nolock() argument
687 struct ubifs_info *c = wbuf->c; in ubifs_wbuf_write_nolock()
692 dbg_jhead(wbuf->jhead), wbuf->lnum, wbuf->offs + wbuf->used); in ubifs_wbuf_write_nolock()
693 ubifs_assert(len > 0 && wbuf->lnum >= 0 && wbuf->lnum < c->leb_cnt); in ubifs_wbuf_write_nolock()
694 ubifs_assert(wbuf->offs >= 0 && wbuf->offs % c->min_io_size == 0); in ubifs_wbuf_write_nolock()
695 ubifs_assert(!(wbuf->offs & 7) && wbuf->offs <= c->leb_size); in ubifs_wbuf_write_nolock()
696 ubifs_assert(wbuf->avail > 0 && wbuf->avail <= wbuf->size); in ubifs_wbuf_write_nolock()
697 ubifs_assert(wbuf->size >= c->min_io_size); in ubifs_wbuf_write_nolock()
698 ubifs_assert(wbuf->size <= c->max_write_size); in ubifs_wbuf_write_nolock()
699 ubifs_assert(wbuf->size % c->min_io_size == 0); in ubifs_wbuf_write_nolock()
700 ubifs_assert(mutex_is_locked(&wbuf->io_mutex)); in ubifs_wbuf_write_nolock()
703 if (c->leb_size - wbuf->offs >= c->max_write_size) in ubifs_wbuf_write_nolock()
704 ubifs_assert(!((wbuf->offs + wbuf->size) % c->max_write_size)); in ubifs_wbuf_write_nolock()
706 if (c->leb_size - wbuf->offs - wbuf->used < aligned_len) { in ubifs_wbuf_write_nolock()
711 cancel_wbuf_timer_nolock(wbuf); in ubifs_wbuf_write_nolock()
716 if (aligned_len <= wbuf->avail) { in ubifs_wbuf_write_nolock()
721 memcpy(wbuf->buf + wbuf->used, buf, len); in ubifs_wbuf_write_nolock()
723 if (aligned_len == wbuf->avail) { in ubifs_wbuf_write_nolock()
725 dbg_jhead(wbuf->jhead), wbuf->lnum, wbuf->offs); in ubifs_wbuf_write_nolock()
726 err = ubifs_leb_write(c, wbuf->lnum, wbuf->buf, in ubifs_wbuf_write_nolock()
727 wbuf->offs, wbuf->size); in ubifs_wbuf_write_nolock()
731 spin_lock(&wbuf->lock); in ubifs_wbuf_write_nolock()
732 wbuf->offs += wbuf->size; in ubifs_wbuf_write_nolock()
733 if (c->leb_size - wbuf->offs >= c->max_write_size) in ubifs_wbuf_write_nolock()
734 wbuf->size = c->max_write_size; in ubifs_wbuf_write_nolock()
736 wbuf->size = c->leb_size - wbuf->offs; in ubifs_wbuf_write_nolock()
737 wbuf->avail = wbuf->size; in ubifs_wbuf_write_nolock()
738 wbuf->used = 0; in ubifs_wbuf_write_nolock()
739 wbuf->next_ino = 0; in ubifs_wbuf_write_nolock()
740 spin_unlock(&wbuf->lock); in ubifs_wbuf_write_nolock()
742 spin_lock(&wbuf->lock); in ubifs_wbuf_write_nolock()
743 wbuf->avail -= aligned_len; in ubifs_wbuf_write_nolock()
744 wbuf->used += aligned_len; in ubifs_wbuf_write_nolock()
745 spin_unlock(&wbuf->lock); in ubifs_wbuf_write_nolock()
753 if (wbuf->used) { in ubifs_wbuf_write_nolock()
760 dbg_jhead(wbuf->jhead), wbuf->lnum, wbuf->offs); in ubifs_wbuf_write_nolock()
761 memcpy(wbuf->buf + wbuf->used, buf, wbuf->avail); in ubifs_wbuf_write_nolock()
762 err = ubifs_leb_write(c, wbuf->lnum, wbuf->buf, wbuf->offs, in ubifs_wbuf_write_nolock()
763 wbuf->size); in ubifs_wbuf_write_nolock()
767 wbuf->offs += wbuf->size; in ubifs_wbuf_write_nolock()
768 len -= wbuf->avail; in ubifs_wbuf_write_nolock()
769 aligned_len -= wbuf->avail; in ubifs_wbuf_write_nolock()
770 written += wbuf->avail; in ubifs_wbuf_write_nolock()
771 } else if (wbuf->offs & (c->max_write_size - 1)) { in ubifs_wbuf_write_nolock()
780 wbuf->size, wbuf->lnum, wbuf->offs); in ubifs_wbuf_write_nolock()
781 err = ubifs_leb_write(c, wbuf->lnum, buf, wbuf->offs, in ubifs_wbuf_write_nolock()
782 wbuf->size); in ubifs_wbuf_write_nolock()
786 wbuf->offs += wbuf->size; in ubifs_wbuf_write_nolock()
787 len -= wbuf->size; in ubifs_wbuf_write_nolock()
788 aligned_len -= wbuf->size; in ubifs_wbuf_write_nolock()
789 written += wbuf->size; in ubifs_wbuf_write_nolock()
801 dbg_io("write %d bytes to LEB %d:%d", n, wbuf->lnum, in ubifs_wbuf_write_nolock()
802 wbuf->offs); in ubifs_wbuf_write_nolock()
803 err = ubifs_leb_write(c, wbuf->lnum, buf + written, in ubifs_wbuf_write_nolock()
804 wbuf->offs, n); in ubifs_wbuf_write_nolock()
807 wbuf->offs += n; in ubifs_wbuf_write_nolock()
813 spin_lock(&wbuf->lock); in ubifs_wbuf_write_nolock()
820 memcpy(wbuf->buf, buf + written, len); in ubifs_wbuf_write_nolock()
822 if (c->leb_size - wbuf->offs >= c->max_write_size) in ubifs_wbuf_write_nolock()
823 wbuf->size = c->max_write_size; in ubifs_wbuf_write_nolock()
825 wbuf->size = c->leb_size - wbuf->offs; in ubifs_wbuf_write_nolock()
826 wbuf->avail = wbuf->size - aligned_len; in ubifs_wbuf_write_nolock()
827 wbuf->used = aligned_len; in ubifs_wbuf_write_nolock()
828 wbuf->next_ino = 0; in ubifs_wbuf_write_nolock()
829 spin_unlock(&wbuf->lock); in ubifs_wbuf_write_nolock()
832 if (wbuf->sync_callback) { in ubifs_wbuf_write_nolock()
833 int free = c->leb_size - wbuf->offs - wbuf->used; in ubifs_wbuf_write_nolock()
835 err = wbuf->sync_callback(c, wbuf->lnum, free, 0); in ubifs_wbuf_write_nolock()
840 if (wbuf->used) in ubifs_wbuf_write_nolock()
841 new_wbuf_timer_nolock(wbuf); in ubifs_wbuf_write_nolock()
847 len, wbuf->lnum, wbuf->offs, err); in ubifs_wbuf_write_nolock()
850 ubifs_dump_leb(c, wbuf->lnum); in ubifs_wbuf_write_nolock()
908 int ubifs_read_node_wbuf(struct ubifs_wbuf *wbuf, void *buf, int type, int len, in ubifs_read_node_wbuf() argument
911 const struct ubifs_info *c = wbuf->c; in ubifs_read_node_wbuf()
916 dbg_ntype(type), len, dbg_jhead(wbuf->jhead)); in ubifs_read_node_wbuf()
917 ubifs_assert(wbuf && lnum >= 0 && lnum < c->leb_cnt && offs >= 0); in ubifs_read_node_wbuf()
921 spin_lock(&wbuf->lock); in ubifs_read_node_wbuf()
922 overlap = (lnum == wbuf->lnum && offs + len > wbuf->offs); in ubifs_read_node_wbuf()
925 spin_unlock(&wbuf->lock); in ubifs_read_node_wbuf()
930 rlen = wbuf->offs - offs; in ubifs_read_node_wbuf()
935 memcpy(buf + rlen, wbuf->buf + offs + rlen - wbuf->offs, len - rlen); in ubifs_read_node_wbuf()
936 spin_unlock(&wbuf->lock); in ubifs_read_node_wbuf()
1039 int ubifs_wbuf_init(struct ubifs_info *c, struct ubifs_wbuf *wbuf) in ubifs_wbuf_init() argument
1043 wbuf->buf = kmalloc(c->max_write_size, GFP_KERNEL); in ubifs_wbuf_init()
1044 if (!wbuf->buf) in ubifs_wbuf_init()
1048 wbuf->inodes = kmalloc(size, GFP_KERNEL); in ubifs_wbuf_init()
1049 if (!wbuf->inodes) { in ubifs_wbuf_init()
1050 kfree(wbuf->buf); in ubifs_wbuf_init()
1051 wbuf->buf = NULL; in ubifs_wbuf_init()
1055 wbuf->used = 0; in ubifs_wbuf_init()
1056 wbuf->lnum = wbuf->offs = -1; in ubifs_wbuf_init()
1064 wbuf->avail = wbuf->size = size; in ubifs_wbuf_init()
1065 wbuf->sync_callback = NULL; in ubifs_wbuf_init()
1066 mutex_init(&wbuf->io_mutex); in ubifs_wbuf_init()
1067 spin_lock_init(&wbuf->lock); in ubifs_wbuf_init()
1068 wbuf->c = c; in ubifs_wbuf_init()
1069 wbuf->next_ino = 0; in ubifs_wbuf_init()
1072 hrtimer_init(&wbuf->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); in ubifs_wbuf_init()
1073 wbuf->timer.function = wbuf_timer_callback_nolock; in ubifs_wbuf_init()
1074 wbuf->softlimit = ktime_set(WBUF_TIMEOUT_SOFTLIMIT, 0); in ubifs_wbuf_init()
1075 wbuf->delta = WBUF_TIMEOUT_HARDLIMIT - WBUF_TIMEOUT_SOFTLIMIT; in ubifs_wbuf_init()
1076 wbuf->delta *= 1000000000ULL; in ubifs_wbuf_init()
1077 ubifs_assert(wbuf->delta <= ULONG_MAX); in ubifs_wbuf_init()
1089 void ubifs_wbuf_add_ino_nolock(struct ubifs_wbuf *wbuf, ino_t inum) in ubifs_wbuf_add_ino_nolock() argument
1091 if (!wbuf->buf) in ubifs_wbuf_add_ino_nolock()
1095 spin_lock(&wbuf->lock); in ubifs_wbuf_add_ino_nolock()
1096 if (wbuf->used) in ubifs_wbuf_add_ino_nolock()
1097 wbuf->inodes[wbuf->next_ino++] = inum; in ubifs_wbuf_add_ino_nolock()
1098 spin_unlock(&wbuf->lock); in ubifs_wbuf_add_ino_nolock()
1109 static int wbuf_has_ino(struct ubifs_wbuf *wbuf, ino_t inum) in wbuf_has_ino() argument
1113 spin_lock(&wbuf->lock); in wbuf_has_ino()
1114 for (i = 0; i < wbuf->next_ino; i++) in wbuf_has_ino()
1115 if (inum == wbuf->inodes[i]) { in wbuf_has_ino()
1119 spin_unlock(&wbuf->lock); in wbuf_has_ino()
1138 struct ubifs_wbuf *wbuf = &c->jheads[i].wbuf; in ubifs_sync_wbufs_by_inode() local
1149 if (!wbuf_has_ino(wbuf, inode->i_ino)) in ubifs_sync_wbufs_by_inode()
1152 mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead); in ubifs_sync_wbufs_by_inode()
1153 if (wbuf_has_ino(wbuf, inode->i_ino)) in ubifs_sync_wbufs_by_inode()
1154 err = ubifs_wbuf_sync_nolock(wbuf); in ubifs_sync_wbufs_by_inode()
1155 mutex_unlock(&wbuf->io_mutex); in ubifs_sync_wbufs_by_inode()