static int osc_io_commit_write(const struct lu_env *env,
const struct cl_io_slice *ios,
const struct cl_page_slice *slice,
unsigned from, unsigned to)
{
struct osc_io *oio = cl2osc_io(env, ios);
struct osc_page *opg = cl2osc_page(slice);
struct osc_object *obj = cl2osc(opg->ops_cl.cpl_obj);
struct osc_async_page *oap = &opg->ops_oap;
LASSERT(to > 0);
/*
* XXX instead of calling osc_page_touch() here and in
* osc_io_fault_start() it might be more logical to introduce
* cl_page_touch() method, that generic cl_io_commit_write() and page
* fault code calls.
*/
osc_page_touch(env, cl2osc_page(slice), to);
if (!client_is_remote(osc_export(obj)) &&
capable(CFS_CAP_SYS_RESOURCE))
oap->oap_brw_flags |= OBD_BRW_NOQUOTA;
if (oio->oi_lockless)
/* see osc_io_prepare_write() for lockless io handling. */
cl_page_clip(env, slice->cpl_page, from, to);
return 0;
}
/**
* Checks that there are no pages being written in the extent being truncated.
*/
static int trunc_check_cb(const struct lu_env *env, struct cl_io *io,
struct cl_page *page, void *cbdata)
{
const struct cl_page_slice *slice;
struct osc_page *ops;
struct osc_async_page *oap;
__u64 start = *(__u64 *)cbdata;
slice = cl_page_at(page, &osc_device_type);
LASSERT(slice != NULL);
ops = cl2osc_page(slice);
oap = &ops->ops_oap;
if (oap->oap_cmd & OBD_BRW_WRITE &&
!list_empty(&oap->oap_pending_item))
CL_PAGE_DEBUG(D_ERROR, env, page, "exists %llu/%s.\n",
start, current->comm);
{
struct page *vmpage = cl_page_vmpage(env, page);
if (PageLocked(vmpage))
CDEBUG(D_CACHE, "page %p index %lu locked for %d.\n",
ops, page->cp_index,
(oap->oap_cmd & OBD_BRW_RWMASK));
}
return CLP_GANG_OKAY;
}
static struct osc_page *osc_cl_page_osc(struct cl_page *page)
{
const struct cl_page_slice *slice;
slice = cl_page_at(page, &osc_device_type);
LASSERT(slice != NULL);
return cl2osc_page(slice);
}
static struct osc_page *osc_cl_page_osc(struct cl_page *page,
struct osc_object *osc)
{
const struct cl_page_slice *slice;
if (osc != NULL)
slice = cl_object_page_slice(&osc->oo_cl, page);
else
slice = cl_page_at(page, &osc_device_type);
LASSERT(slice != NULL);
return cl2osc_page(slice);
}
