*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*
* osc cache management.
*
#define EXTSTR "[%lu -> %lu/%lu]"
#define EXTPARA(ext) (ext)->oe_start, (ext)->oe_end, (ext)->oe_max_end
-static const char *oes_strings[] = {
+static const char *const oes_strings[] = {
"inv", "active", "cache", "locking", "lockdone", "rpc", "trunc", NULL };
#define OSC_EXTENT_DUMP_WITH_LOC(file, func, line, mask, extent, fmt, ...) do {\
if (victim == NULL)
return -EINVAL;
- if (victim->oe_state != OES_CACHE || victim->oe_fsync_wait)
+ if (victim->oe_state != OES_INV &&
+ (victim->oe_state != OES_CACHE || victim->oe_fsync_wait))
return -EBUSY;
if (cur->oe_max_end != victim->oe_max_end)
/**
* Drop user count of osc_extent, and unplug IO asynchronously.
*/
-int osc_extent_release(const struct lu_env *env, struct osc_extent *ext)
+void osc_extent_release(const struct lu_env *env, struct osc_extent *ext)
{
struct osc_object *obj = ext->oe_obj;
struct client_obd *cli = osc_cli(obj);
- int rc = 0;
ENTRY;
LASSERT(atomic_read(&ext->oe_users) > 0);
osc_io_unplug_async(env, cli, obj);
}
osc_extent_put(env, ext);
- RETURN(rc);
+
+ RETURN_EXIT;
}
/**
if (osc_extent_merge(env, ext, cur) == 0) {
LASSERT(*grants >= chunksize);
*grants -= chunksize;
- found = osc_extent_hold(ext);
/*
* Try to merge with the next one too because we
/* we can save extent tax from next extent */
*grants += cli->cl_grant_extent_tax;
+ found = osc_extent_hold(ext);
break;
}
}
* the size of file. */
if (!(last->oap_async_flags & ASYNC_COUNT_STABLE)) {
int last_oap_count = osc_refresh_count(env, last, OBD_BRW_WRITE);
- LASSERT(last_oap_count > 0);
+ LASSERTF(last_oap_count > 0,
+ "last_oap_count %d\n", last_oap_count);
LASSERT(last->oap_page_off + last_oap_count <= PAGE_SIZE);
last->oap_count = last_oap_count;
spin_lock(&last->oap_lock);
pga->flag |= OBD_BRW_FROM_GRANT;
CDEBUG(D_CACHE, "using %lu grant credits for brw %p page %p\n",
PAGE_SIZE, pga, pga->pg);
- osc_update_next_shrink(cli);
}
/* the companion to osc_consume_write_grant, called when a brw has completed.
};
assert_osc_object_is_locked(obj);
- while (!list_empty(&obj->oo_hp_exts)) {
- ext = list_entry(obj->oo_hp_exts.next, struct osc_extent,
- oe_link);
+ while ((ext = list_first_entry_or_null(&obj->oo_hp_exts,
+ struct osc_extent,
+ oe_link)) != NULL) {
if (!try_to_add_extent_for_io(cli, ext, &data))
return data.erd_page_count;
EASSERT(ext->oe_nr_pages <= data.erd_max_pages, ext);
if (data.erd_page_count == data.erd_max_pages)
return data.erd_page_count;
- while (!list_empty(&obj->oo_urgent_exts)) {
- ext = list_entry(obj->oo_urgent_exts.next,
- struct osc_extent, oe_link);
+ while ((ext = list_first_entry_or_null(&obj->oo_urgent_exts,
+ struct osc_extent,
+ oe_link)) != NULL) {
if (!try_to_add_extent_for_io(cli, ext, &data))
return data.erd_page_count;
}
* extents can usually only be added if the rpclist was empty, so if we
* can't add one, we continue on to trying to add normal extents. This
* is so we don't miss adding extra extents to an RPC containing high
- * priority or urgent extents. */
- while (!list_empty(&obj->oo_full_exts)) {
- ext = list_entry(obj->oo_full_exts.next,
- struct osc_extent, oe_link);
+ * priority or urgent extents.
+ */
+ while ((ext = list_first_entry_or_null(&obj->oo_full_exts,
+ struct osc_extent,
+ oe_link)) != NULL) {
if (!try_to_add_extent_for_io(cli, ext, &data))
break;
}
EXPORT_SYMBOL(osc_io_unplug0);
int osc_prep_async_page(struct osc_object *osc, struct osc_page *ops,
- struct page *page, loff_t offset)
+ struct cl_page *page, loff_t offset)
{
struct obd_export *exp = osc_export(osc);
struct osc_async_page *oap = &ops->ops_oap;
+ struct page *vmpage = page->cp_vmpage;
ENTRY;
if (!page)
oap->oap_cli = &exp->exp_obd->u.cli;
oap->oap_obj = osc;
- oap->oap_page = page;
+ oap->oap_page = vmpage;
oap->oap_obj_off = offset;
LASSERT(!(offset & ~PAGE_MASK));
+ /* Count of transient (direct i/o) pages is always stable by the time
+ * they're submitted. Setting this here lets us avoid calling
+ * cl_page_clip later to set this.
+ */
+ if (page->cp_type == CPT_TRANSIENT)
+ oap->oap_async_flags |= ASYNC_COUNT_STABLE|ASYNC_URGENT|
+ ASYNC_READY;
+
INIT_LIST_HEAD(&oap->oap_pending_item);
INIT_LIST_HEAD(&oap->oap_rpc_item);
spin_lock_init(&oap->oap_lock);
- CDEBUG(D_INFO, "oap %p page %p obj off %llu\n",
- oap, page, oap->oap_obj_off);
+ CDEBUG(D_INFO, "oap %p vmpage %p obj off %llu\n",
+ oap, vmpage, oap->oap_obj_off);
RETURN(0);
}
EXPORT_SYMBOL(osc_prep_async_page);
/* Set the OBD_BRW_SRVLOCK before the page is queued. */
brw_flags |= ops->ops_srvlock ? OBD_BRW_SRVLOCK : 0;
- if (oio->oi_cap_sys_resource || io->ci_noquota) {
+ if (io->ci_noquota) {
brw_flags |= OBD_BRW_NOQUOTA;
cmd |= OBD_BRW_NOQUOTA;
}
+ if (oio->oi_cap_sys_resource) {
+ brw_flags |= OBD_BRW_SYS_RESOURCE;
+ cmd |= OBD_BRW_SYS_RESOURCE;
+ }
+
/* check if the file's owner/group is over quota */
- if (!(cmd & OBD_BRW_NOQUOTA)) {
+ /* do not check for root without root squash, because in this case
+ * we should bypass quota
+ */
+ if ((!oio->oi_cap_sys_resource ||
+ cli->cl_root_squash) &&
+ !io->ci_noquota) {
struct cl_object *obj;
struct cl_attr *attr;
unsigned int qid[LL_MAXQUOTAS];
return rc;
}
-int osc_queue_sync_pages(const struct lu_env *env, const struct cl_io *io,
+int osc_queue_sync_pages(const struct lu_env *env, struct cl_io *io,
struct osc_object *obj, struct list_head *list,
int brw_flags)
{
ext->oe_srvlock = !!(brw_flags & OBD_BRW_SRVLOCK);
ext->oe_ndelay = !!(brw_flags & OBD_BRW_NDELAY);
ext->oe_dio = !!(brw_flags & OBD_BRW_NOCACHE);
+ if (ext->oe_dio && !ext->oe_rw) { /* direct io write */
+ int grants;
+ int ppc;
+
+ ppc = 1 << (cli->cl_chunkbits - PAGE_SHIFT);
+ grants = cli->cl_grant_extent_tax;
+ grants += (1 << cli->cl_chunkbits) *
+ ((page_count + ppc - 1) / ppc);
+
+ CDEBUG(D_CACHE, "requesting %d bytes grant\n", grants);
+ spin_lock(&cli->cl_loi_list_lock);
+ if (osc_reserve_grant(cli, grants) == 0) {
+ list_for_each_entry(oap, list, oap_pending_item) {
+ osc_consume_write_grant(cli,
+ &oap->oap_brw_page);
+ }
+ atomic_long_add(page_count, &obd_dirty_pages);
+ osc_unreserve_grant_nolock(cli, grants, 0);
+ ext->oe_grants = grants;
+ } else {
+ /* We cannot report ENOSPC correctly if we do parallel
+ * DIO (async RPC submission), so turn off parallel dio
+ * if there is not sufficient grant available. This
+ * makes individual RPCs synchronous.
+ */
+ io->ci_parallel_dio = false;
+ CDEBUG(D_CACHE,
+ "not enough grant available, switching to sync for this i/o\n");
+ }
+ spin_unlock(&cli->cl_loi_list_lock);
+ osc_update_next_shrink(cli);
+ }
+
ext->oe_is_rdma_only = !!(brw_flags & OBD_BRW_RDMA_ONLY);
ext->oe_nr_pages = page_count;
ext->oe_mppr = mppr;
osc_list_maint(cli, obj);
- while (!list_empty(&list)) {
+ while ((ext = list_first_entry_or_null(&list,
+ struct osc_extent,
+ oe_link)) != NULL) {
int rc;
- ext = list_entry(list.next, struct osc_extent, oe_link);
list_del_init(&ext->oe_link);
/* extent may be in OES_ACTIVE state because inode mutex
spin_unlock(&osc->oo_tree_lock);
tree_lock = false;
+ res = (*cb)(env, io, pvec, j, cbdata);
+
for (i = 0; i < j; ++i) {
ops = pvec[i];
- if (res)
- res = (*cb)(env, io, ops, cbdata);
-
page = ops->ops_cl.cpl_page;
lu_ref_del(&page->cp_reference, "gang_lookup", current);
cl_pagevec_put(env, page, pagevec);
if (!res)
break;
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SLOW_PAGE_EVICT,
+ cfs_fail_val ?: 20);
+
+ if (io->ci_type == CIT_MISC &&
+ io->u.ci_misc.lm_next_rpc_time &&
+ ktime_get_seconds() > io->u.ci_misc.lm_next_rpc_time) {
+ osc_send_empty_rpc(osc, idx << PAGE_SHIFT);
+ io->u.ci_misc.lm_next_rpc_time = ktime_get_seconds() +
+ 5 * obd_timeout / 16;
+ }
+
if (need_resched())
cond_resched();
* Check if page @page is covered by an extra lock or discard it.
*/
static bool check_and_discard_cb(const struct lu_env *env, struct cl_io *io,
- struct osc_page *ops, void *cbdata)
+ void **pvec, int count, void *cbdata)
{
struct osc_thread_info *info = osc_env_info(env);
struct osc_object *osc = cbdata;
- pgoff_t index;
+ int i;
- index = osc_index(ops);
- if (index >= info->oti_fn_index) {
- struct ldlm_lock *tmp;
+ for (i = 0; i < count; i++) {
+ struct osc_page *ops = pvec[i];
struct cl_page *page = ops->ops_cl.cpl_page;
+ pgoff_t index = osc_index(ops);
+ bool discard = false;
+
+ /* negative lock caching */
+ if (index < info->oti_ng_index) {
+ discard = true;
+ } else if (index >= info->oti_fn_index) {
+ struct ldlm_lock *tmp;
+ /* refresh non-overlapped index */
+ tmp = osc_dlmlock_at_pgoff(env, osc, index,
+ OSC_DAP_FL_TEST_LOCK |
+ OSC_DAP_FL_AST |
+ OSC_DAP_FL_RIGHT);
+ if (tmp != NULL) {
+ __u64 end =
+ tmp->l_policy_data.l_extent.end;
+ __u64 start =
+ tmp->l_policy_data.l_extent.start;
+
+ /* no lock covering this page */
+ if (index < cl_index(osc2cl(osc), start)) {
+ /* no lock at @index,
+ * first lock at @start
+ */
+ info->oti_ng_index =
+ cl_index(osc2cl(osc), start);
+ discard = true;
+ } else {
+ /* Cache the first-non-overlapped
+ * index so as to skip all pages
+ * within [index, oti_fn_index).
+ * This is safe because if tmp lock
+ * is canceled, it will discard these
+ * pages.
+ */
+ info->oti_fn_index =
+ cl_index(osc2cl(osc), end + 1);
+ if (end == OBD_OBJECT_EOF)
+ info->oti_fn_index =
+ CL_PAGE_EOF;
+ }
+ LDLM_LOCK_PUT(tmp);
+ } else {
+ info->oti_ng_index = CL_PAGE_EOF;
+ discard = true;
+ }
+ }
- /* refresh non-overlapped index */
- tmp = osc_dlmlock_at_pgoff(env, osc, index,
- OSC_DAP_FL_TEST_LOCK);
- if (tmp != NULL) {
- __u64 end = tmp->l_policy_data.l_extent.end;
- /* Cache the first-non-overlapped index so as to skip
- * all pages within [index, oti_fn_index). This is safe
- * because if tmp lock is canceled, it will discard
- * these pages. */
- info->oti_fn_index = cl_index(osc2cl(osc), end + 1);
- if (end == OBD_OBJECT_EOF)
- info->oti_fn_index = CL_PAGE_EOF;
- LDLM_LOCK_PUT(tmp);
- } else if (cl_page_own(env, io, page) == 0) {
- /* discard the page */
- cl_page_discard(env, io, page);
- cl_page_disown(env, io, page);
- } else {
- LASSERT(page->cp_state == CPS_FREEING);
+ if (discard) {
+ if (cl_page_own(env, io, page) == 0) {
+ cl_page_discard(env, io, page);
+ cl_page_disown(env, io, page);
+ } else {
+ LASSERT(page->cp_state == CPS_FREEING);
+ }
}
- }
- info->oti_next_index = index + 1;
+ info->oti_next_index = index + 1;
+ }
return true;
}
bool osc_discard_cb(const struct lu_env *env, struct cl_io *io,
- struct osc_page *ops, void *cbdata)
+ void **pvec, int count, void *cbdata)
{
struct osc_thread_info *info = osc_env_info(env);
- struct cl_page *page = ops->ops_cl.cpl_page;
-
- /* page is top page. */
- info->oti_next_index = osc_index(ops) + 1;
- if (cl_page_own(env, io, page) == 0) {
- if (!ergo(page->cp_type == CPT_CACHEABLE,
- !PageDirty(cl_page_vmpage(page))))
- CL_PAGE_DEBUG(D_ERROR, env, page,
- "discard dirty page?\n");
-
- /* discard the page */
- cl_page_discard(env, io, page);
- cl_page_disown(env, io, page);
- } else {
- LASSERT(page->cp_state == CPS_FREEING);
+ int i;
+
+ for (i = 0; i < count; i++) {
+ struct osc_page *ops = pvec[i];
+ struct cl_page *page = ops->ops_cl.cpl_page;
+
+ /* page is top page. */
+ info->oti_next_index = osc_index(ops) + 1;
+ if (cl_page_own(env, io, page) == 0) {
+ if (!ergo(page->cp_type == CPT_CACHEABLE,
+ !PageDirty(cl_page_vmpage(page))))
+ CL_PAGE_DEBUG(D_ERROR, env, page,
+ "discard dirty page?\n");
+
+ /* discard the page */
+ cl_page_discard(env, io, page);
+ cl_page_disown(env, io, page);
+ } else {
+ LASSERT(page->cp_state == CPS_FREEING);
+ }
}
return true;
io->ci_obj = cl_object_top(osc2cl(osc));
io->ci_ignore_layout = 1;
+ io->u.ci_misc.lm_next_rpc_time = ktime_get_seconds() +
+ 5 * obd_timeout / 16;
result = cl_io_init(env, io, CIT_MISC, io->ci_obj);
if (result != 0)
GOTO(out, result);
cb = discard ? osc_discard_cb : check_and_discard_cb;
info->oti_fn_index = info->oti_next_index = start;
+ info->oti_ng_index = 0;
osc_page_gang_lookup(env, io, osc,
info->oti_next_index, end, cb, osc);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff