static void entd_flush(struct super_block *super, struct wbq *rq)
{
reiser4_context ctx;
init_stack_context(&ctx, super);
ctx.entd = 1;
ctx.gfp_mask = GFP_NOFS;
rq->wbc->range_start = page_offset(rq->page);
rq->wbc->range_end = rq->wbc->range_start +
(ENTD_CAPTURE_APAGE_BURST << PAGE_CACHE_SHIFT);
rq->mapping->a_ops->writepages(rq->mapping, rq->wbc);
if (rq->wbc->nr_to_write > 0) {
long result;
struct bdi_writeback *wb;
struct wb_writeback_work work = {
.sb = super,
.sync_mode = WB_SYNC_NONE,
.nr_pages = LONG_MAX,
.range_cyclic = 0,
.reason = WB_REASON_TRY_TO_FREE_PAGES,
};
rq->wbc->sync_mode = work.sync_mode,
rq->wbc->range_cyclic = work.range_cyclic,
rq->wbc->range_start = 0;
rq->wbc->range_end = LLONG_MAX;
/*
* we don't need to pin superblock for writeback:
* this is implicitly pinned by write_page_by_ent
* (via igrab), so that shutdown_super() will wait
* (on reiser4_put_super) for entd completion.
*/
wb = &rq->mapping->backing_dev_info->wb;
spin_lock(&wb->list_lock);
result = generic_writeback_sb_inodes(super,
wb,
rq->wbc,
&work,
true);
spin_unlock(&wb->list_lock);
}
rq->wbc->nr_to_write = ENTD_CAPTURE_APAGE_BURST;
reiser4_writeout(super, rq->wbc);
context_set_commit_async(&ctx);
reiser4_exit_context(&ctx);
}
/* this is common implementation of vfs's fsync method of struct
file_operations
*/
int reiser4_sync_common(struct file *file, struct dentry *dentry, int datasync)
{
reiser4_context *ctx;
int result;
ctx = reiser4_init_context(dentry->d_inode->i_sb);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
result = txnmgr_force_commit_all(dentry->d_inode->i_sb, 0);
context_set_commit_async(ctx);
reiser4_exit_context(ctx);
return result;
}