* Author: Nikita Danilov <nikita.danilov@sun.com>
*/
-/** \addtogroup osc osc @{ */
-
#define DEBUG_SUBSYSTEM S_OSC
#include "osc_cl_internal.h"
+/** \addtogroup osc
+ * @{
+ */
+
/*****************************************************************************
*
* Type conversions.
}
/**
- * How many pages osc_io_submit() queues before checking whether an RPC is
- * ready.
- */
-#define OSC_QUEUE_GRAIN (32)
-
-/**
* An implementation of cl_io_operations::cio_io_submit() method for osc
* layer. Iterates over pages in the in-queue, prepares each for io by calling
* cl_page_prep() and then either submits them through osc_io_submit_page()
*/
static int osc_io_submit(const struct lu_env *env,
const struct cl_io_slice *ios,
- enum cl_req_type crt, struct cl_2queue *queue)
+ enum cl_req_type crt, struct cl_2queue *queue,
+ enum cl_req_priority priority)
{
struct cl_page *page;
struct cl_page *tmp;
osc = cl2osc(opg->ops_cl.cpl_obj);
exp = osc_export(osc);
+ if (priority > CRP_NORMAL) {
+ cfs_spin_lock(&oap->oap_lock);
+ oap->oap_async_flags |= ASYNC_HP;
+ cfs_spin_unlock(&oap->oap_lock);
+ }
/*
* This can be checked without cli->cl_loi_list_lock, because
* ->oap_*_item are always manipulated when the page is owned.
*/
- if (!list_empty(&oap->oap_urgent_item) ||
- !list_empty(&oap->oap_rpc_item)) {
+ if (!cfs_list_empty(&oap->oap_urgent_item) ||
+ !cfs_list_empty(&oap->oap_rpc_item)) {
result = -EBUSY;
break;
}
result = cl_page_prep(env, io, page, crt);
if (result == 0) {
cl_page_list_move(qout, qin, page);
- if (list_empty(&oap->oap_pending_item)) {
+ if (cfs_list_empty(&oap->oap_pending_item)) {
osc_io_submit_page(env, cl2osc_io(env, ios),
opg, crt);
} else {
osc->oo_oinfo,
oap,
OSC_FLAGS);
- if (result != 0)
- break;
+ /*
+ * bug 18881: we can't just break out here when
+ * error occurrs after cl_page_prep has been
+ * called against the page. The correct
+ * way is to call page's completion routine,
+ * as in osc_oap_interrupted. For simplicity,
+ * we just force osc_set_async_flags_base() to
+ * not return error.
+ */
+ LASSERT(result == 0);
}
+ opg->ops_submit_time = cfs_time_current();
} else {
LASSERT(result < 0);
if (result != -EALREADY)
*/
result = 0;
}
+
/*
- * Don't keep client_obd_list_lock() for too long.
+ * We might hold client_obd_list_lock() for too long and cause
+ * soft-lockups (see bug 16651). But on the other hand, pages
+ * are queued here with ASYNC_URGENT flag, thus will be sent
+ * out immediately once osc_io_unplug() be called, possibly
+ * resulting sub-optimal RPCs.
*
- * XXX lock_need_resched() should be used here, but it is not
- * available in the older of supported kernels.
+ * We think creating optimal-sized RPCs is more important than
+ * avoiding the transient soft-lockups, plus I believe the
+ * soft-locks only happen in full debug testing.
*/
- if (queued > OSC_QUEUE_GRAIN || cfs_need_resched()) {
- queued = 0;
- osc_io_unplug(env, osc, cli);
- cfs_cond_resched();
- }
}
LASSERT(ergo(result == 0, cli != NULL));
RETURN(0);
}
-static int osc_punch_upcall(void *a, int rc)
+static int osc_setattr_upcall(void *a, int rc)
{
- struct osc_punch_cbargs *args = a;
+ struct osc_setattr_cbargs *args = a;
args->opc_rc = rc;
- complete(&args->opc_sync);
+ cfs_complete(&args->opc_sync);
return 0;
}
-#ifdef __KERNEL__
+/* Disable osc_trunc_check() because it is naturally race between read and
+ * truncate. See bug 20645 for details.
+ */
+#if 0 && defined(__KERNEL__)
/**
* Checks that there are no pages being written in the extent being truncated.
*/
* XXX this is quite expensive check.
*/
cl_page_list_init(list);
- cl_page_gang_lookup(env, clob, io, start + partial, CL_PAGE_EOF, list);
+ cl_page_gang_lookup(env, clob, io, start + partial, CL_PAGE_EOF, list, 0);
cl_page_list_for_each(page, list)
CL_PAGE_DEBUG(D_ERROR, env, page, "exists %lu\n", start);
cl_page_list_disown(env, io, list);
cl_page_list_fini(env, list);
- spin_lock(&obj->oo_seatbelt);
- list_for_each_entry(cp, &obj->oo_inflight[CRT_WRITE], ops_inflight) {
+ cfs_spin_lock(&obj->oo_seatbelt);
+ cfs_list_for_each_entry(cp, &obj->oo_inflight[CRT_WRITE],
+ ops_inflight) {
page = cp->ops_cl.cpl_page;
if (page->cp_index >= start + partial) {
cfs_task_t *submitter;
libcfs_debug_dumpstack(submitter);
}
}
- spin_unlock(&obj->oo_seatbelt);
+ cfs_spin_unlock(&obj->oo_seatbelt);
}
#else /* __KERNEL__ */
# define osc_trunc_check(env, io, oio, size) do {;} while (0)
#endif
-static int osc_io_trunc_start(const struct lu_env *env,
- const struct cl_io_slice *slice)
+static int osc_io_setattr_start(const struct lu_env *env,
+ const struct cl_io_slice *slice)
{
struct cl_io *io = slice->cis_io;
struct osc_io *oio = cl2osc_io(env, slice);
struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
struct obdo *oa = &oio->oi_oa;
- struct osc_punch_cbargs *cbargs = &oio->oi_punch_cbarg;
- struct obd_capa *capa;
- loff_t size = io->u.ci_truncate.tr_size;
- int result;
-
- memset(oa, 0, sizeof(*oa));
-
- osc_trunc_check(env, io, oio, size);
+ struct osc_setattr_cbargs *cbargs = &oio->oi_setattr_cbarg;
+ loff_t size = io->u.ci_setattr.sa_attr.lvb_size;
+ unsigned int ia_valid = io->u.ci_setattr.sa_valid;
+ int result = 0;
+ struct obd_info oinfo = { { { 0 } } };
+
+ if (ia_valid & ATTR_SIZE)
+ osc_trunc_check(env, io, oio, size);
+
+ if (oio->oi_lockless == 0) {
+ cl_object_attr_lock(obj);
+ result = cl_object_attr_get(env, obj, attr);
+ if (result == 0) {
+ unsigned int cl_valid = 0;
- cl_object_attr_lock(obj);
- result = cl_object_attr_get(env, obj, attr);
- if (result == 0) {
- attr->cat_size = attr->cat_kms = size;
- result = cl_object_attr_set(env, obj, attr, CAT_SIZE|CAT_KMS);
+ if (ia_valid & ATTR_SIZE) {
+ attr->cat_size = attr->cat_kms = size;
+ cl_valid = (CAT_SIZE | CAT_KMS);
+ }
+ if (ia_valid & ATTR_MTIME_SET) {
+ attr->cat_mtime = io->u.ci_setattr.sa_attr.lvb_mtime;
+ cl_valid |= CAT_MTIME;
+ }
+ if (ia_valid & ATTR_ATIME_SET) {
+ attr->cat_atime = io->u.ci_setattr.sa_attr.lvb_atime;
+ cl_valid |= CAT_ATIME;
+ }
+ if (ia_valid & ATTR_CTIME_SET) {
+ attr->cat_ctime = io->u.ci_setattr.sa_attr.lvb_ctime;
+ cl_valid |= CAT_CTIME;
+ }
+ result = cl_object_attr_set(env, obj, attr, cl_valid);
+ }
+ cl_object_attr_unlock(obj);
}
- cl_object_attr_unlock(obj);
-
+ memset(oa, 0, sizeof(*oa));
if (result == 0) {
oa->o_id = loi->loi_id;
oa->o_gr = loi->loi_gr;
oa->o_ctime = attr->cat_ctime;
oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLATIME |
OBD_MD_FLCTIME | OBD_MD_FLMTIME;
- if (oio->oi_lockless) {
- oa->o_flags = OBD_FL_TRUNCLOCK;
- oa->o_valid |= OBD_MD_FLFLAGS;
+ if (ia_valid & ATTR_SIZE) {
+ oa->o_size = size;
+ oa->o_blocks = OBD_OBJECT_EOF;
+ oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
+
+ if (oio->oi_lockless) {
+ oa->o_flags = OBD_FL_SRVLOCK;
+ oa->o_valid |= OBD_MD_FLFLAGS;
+ }
+ } else {
+ LASSERT(oio->oi_lockless == 0);
}
- oa->o_size = size;
- oa->o_blocks = OBD_OBJECT_EOF;
- oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
-
- capa = io->u.ci_truncate.tr_capa;
- init_completion(&cbargs->opc_sync);
- result = osc_punch_base(osc_export(cl2osc(obj)), oa, capa,
- osc_punch_upcall, cbargs, PTLRPCD_SET);
+
+ oinfo.oi_oa = oa;
+ oinfo.oi_capa = io->u.ci_setattr.sa_capa;
+ cfs_init_completion(&cbargs->opc_sync);
+
+ if (ia_valid & ATTR_SIZE)
+ result = osc_punch_base(osc_export(cl2osc(obj)),
+ &oinfo, osc_setattr_upcall,
+ cbargs, PTLRPCD_SET);
+ else
+ result = osc_setattr_async_base(osc_export(cl2osc(obj)),
+ &oinfo, NULL,
+ osc_setattr_upcall,
+ cbargs, PTLRPCD_SET);
}
return result;
}
-static void osc_io_trunc_end(const struct lu_env *env,
- const struct cl_io_slice *slice)
+static void osc_io_setattr_end(const struct lu_env *env,
+ const struct cl_io_slice *slice)
{
struct cl_io *io = slice->cis_io;
struct osc_io *oio = cl2osc_io(env, slice);
- struct osc_punch_cbargs *cbargs = &oio->oi_punch_cbarg;
- struct obdo *oa = &oio->oi_oa;
+ struct osc_setattr_cbargs *cbargs = &oio->oi_setattr_cbarg;
int result;
- wait_for_completion(&cbargs->opc_sync);
+ cfs_wait_for_completion(&cbargs->opc_sync);
result = io->ci_result = cbargs->opc_rc;
if (result == 0) {
struct cl_object *obj = slice->cis_obj;
- if (oio->oi_lockless == 0) {
- struct cl_attr *attr = &osc_env_info(env)->oti_attr;
- int valid = 0;
-
- /* Update kms & size */
- if (oa->o_valid & OBD_MD_FLSIZE) {
- attr->cat_size = oa->o_size;
- attr->cat_kms = oa->o_size;
- valid |= CAT_KMS|CAT_SIZE;
- }
- if (oa->o_valid & OBD_MD_FLBLOCKS) {
- attr->cat_blocks = oa->o_blocks;
- valid |= CAT_BLOCKS;
- }
- if (oa->o_valid & OBD_MD_FLMTIME) {
- attr->cat_mtime = oa->o_mtime;
- valid |= CAT_MTIME;
- }
- if (oa->o_valid & OBD_MD_FLCTIME) {
- attr->cat_ctime = oa->o_ctime;
- valid |= CAT_CTIME;
- }
- if (oa->o_valid & OBD_MD_FLATIME) {
- attr->cat_atime = oa->o_atime;
- valid |= CAT_ATIME;
- }
- cl_object_attr_lock(obj);
- result = cl_object_attr_set(env, obj, attr, valid);
- cl_object_attr_unlock(obj);
- } else { /* lockless truncate */
+ if (oio->oi_lockless) {
+ /* lockless truncate */
struct osc_device *osd = lu2osc_dev(obj->co_lu.lo_dev);
+
+ LASSERT(cl_io_is_trunc(io));
/* XXX: Need a lock. */
osd->od_stats.os_lockless_truncates++;
}
}
+}
+
+static int osc_io_read_start(const struct lu_env *env,
+ const struct cl_io_slice *slice)
+{
+ struct osc_io *oio = cl2osc_io(env, slice);
+ struct cl_object *obj = slice->cis_obj;
+ struct cl_attr *attr = &osc_env_info(env)->oti_attr;
+ int result = 0;
+ ENTRY;
+
+ if (oio->oi_lockless == 0) {
+ cl_object_attr_lock(obj);
+ result = cl_object_attr_get(env, obj, attr);
+ if (result == 0) {
+ attr->cat_atime = LTIME_S(CFS_CURRENT_TIME);
+ result = cl_object_attr_set(env, obj, attr,
+ CAT_ATIME);
+ }
+ cl_object_attr_unlock(obj);
+ }
+ RETURN(result);
+}
+
+static int osc_io_write_start(const struct lu_env *env,
+ const struct cl_io_slice *slice)
+{
+ struct osc_io *oio = cl2osc_io(env, slice);
+ struct cl_object *obj = slice->cis_obj;
+ struct cl_attr *attr = &osc_env_info(env)->oti_attr;
+ int result = 0;
+ ENTRY;
- /* return result; */
+ if (oio->oi_lockless == 0) {
+ cl_object_attr_lock(obj);
+ result = cl_object_attr_get(env, obj, attr);
+ if (result == 0) {
+ attr->cat_mtime = attr->cat_ctime =
+ LTIME_S(CFS_CURRENT_TIME);
+ result = cl_object_attr_set(env, obj, attr,
+ CAT_MTIME | CAT_CTIME);
+ }
+ cl_object_attr_unlock(obj);
+ }
+ RETURN(result);
}
static const struct cl_io_operations osc_io_ops = {
.op = {
[CIT_READ] = {
+ .cio_start = osc_io_read_start,
.cio_fini = osc_io_fini
},
[CIT_WRITE] = {
+ .cio_start = osc_io_write_start,
.cio_fini = osc_io_fini
},
- [CIT_TRUNC] = {
- .cio_start = osc_io_trunc_start,
- .cio_end = osc_io_trunc_end
+ [CIT_SETATTR] = {
+ .cio_start = osc_io_setattr_start,
+ .cio_end = osc_io_setattr_end
},
[CIT_FAULT] = {
.cio_fini = osc_io_fini,
}
if (flags & OBD_MD_FLHANDLE) {
clerq = slice->crs_req;
- LASSERT(!list_empty(&clerq->crq_pages));
+ LASSERT(!cfs_list_empty(&clerq->crq_pages));
apage = container_of(clerq->crq_pages.next,
struct cl_page, cp_flight);
opg = osc_cl_page_osc(apage);
apage = opg->ops_cl.cpl_page; /* now apage is a sub-page */
lock = cl_lock_at_page(env, apage->cp_obj, apage, NULL, 1, 1);
- if (lock != NULL) {
- olck = osc_lock_at(lock);
- LASSERT(olck != NULL);
- /* check for lockless io. */
- if (olck->ols_lock != NULL) {
- oa->o_handle = olck->ols_lock->l_remote_handle;
- oa->o_valid |= OBD_MD_FLHANDLE;
- }
- cl_lock_put(env, lock);
- } else {
- /* Should only be possible with liblustre */
- LASSERT(LIBLUSTRE_CLIENT);
+ if (lock == NULL) {
+ struct cl_object_header *head;
+ struct cl_lock *scan;
+
+ head = cl_object_header(apage->cp_obj);
+ cfs_list_for_each_entry(scan, &head->coh_locks,
+ cll_linkage)
+ CL_LOCK_DEBUG(D_ERROR, env, scan,
+ "no cover page!\n");
+ CL_PAGE_DEBUG(D_ERROR, env, apage,
+ "dump uncover page!\n");
+ libcfs_debug_dumpstack(NULL);
+ LBUG();
+ }
+
+ olck = osc_lock_at(lock);
+ LASSERT(olck != NULL);
+ LASSERT(ergo(opg->ops_srvlock, olck->ols_lock == NULL));
+ /* check for lockless io. */
+ if (olck->ols_lock != NULL) {
+ oa->o_handle = olck->ols_lock->l_remote_handle;
+ oa->o_valid |= OBD_MD_FLHANDLE;
}
+ cl_lock_put(env, lock);
}
}
struct osc_req *or;
int result;
- OBD_SLAB_ALLOC_PTR(or, osc_req_kmem);
+ OBD_SLAB_ALLOC_PTR_GFP(or, osc_req_kmem, CFS_ALLOC_IO);
if (or != NULL) {
cl_req_slice_add(req, &or->or_cl, dev, &osc_req_ops);
result = 0;
git://git.whamcloud.com / fs / lustre-release.git / blobdiff