static void dyn_fsync_force_flush(void)
{
/* flush all outstanding buffers */
wakeup_flusher_threads(0);
sync_filesystems(0);
sync_filesystems(1);
}
/*
* sync everything. Start out by waking pdflush, because that writes back
* all queues in parallel.
*/
static void do_sync(void)
{
wakeup_flusher_threads(0, WB_REASON_SYNC);
sync_filesystems(0);
sync_filesystems(1);
if (unlikely(laptop_mode))
laptop_sync_completion();
return;
}
static void dyn_fsync_early_suspend(struct early_suspend *h)
{
mutex_lock(&fsync_mutex);
if (dyn_fsync_active) {
early_suspend_active = true;
#if 1
wakeup_flusher_threads(0);
sync_filesystems(0);
sync_filesystems(1);
#endif
}
mutex_unlock(&fsync_mutex);
}
static void dyn_fsync_early_suspend(struct early_suspend *h)
{
mutex_lock(&fsync_mutex);
if (dyn_fsync_active) {
early_suspend_active = true;
#if 1
/* flush all outstanding buffers */
wakeup_flusher_threads(0, WB_REASON_SYNC);
sync_filesystems(0);
sync_filesystems(1);
#endif
}
mutex_unlock(&fsync_mutex);
}
/*
* Sync everything. We start by waking flusher threads so that most of
* writeback runs on all devices in parallel. Then we sync all inodes reliably
* which effectively also waits for all flusher threads to finish doing
* writeback. At this point all data is on disk so metadata should be stable
* and we tell filesystems to sync their metadata via ->sync_fs() calls.
* Finally, we writeout all block devices because some filesystems (e.g. ext2)
* just write metadata (such as inodes or bitmaps) to block device page cache
* and do not sync it on their own in ->sync_fs().
*/
static void do_sync(void)
{
int nowait = 0, wait = 1;
wakeup_flusher_threads(0, WB_REASON_SYNC);
iterate_supers(sync_inodes_one_sb, NULL);
iterate_supers(sync_fs_one_sb, &nowait);
iterate_supers(sync_fs_one_sb, &wait);
iterate_bdevs(fdatawrite_one_bdev, NULL);
iterate_bdevs(fdatawait_one_bdev, NULL);
if (unlikely(laptop_mode))
laptop_sync_completion();
return;
}
static void do_laptop_sync(struct work_struct *work)
{
wakeup_flusher_threads(0);
kfree(work);
}
static void dyn_fsync_force_flush(void)
{
/* flush all outstanding buffers */
wakeup_flusher_threads(0, WB_REASON_SYNC);
sync_filesystems();
}
