LU-14739 quota: nodemap squashed root cannot bypass quota

[fs/lustre-release.git] / lustre / osc / osc_cache.c

diff --git a/lustre/osc/osc_cache.c b/lustre/osc/osc_cache.c
index 9d3d22b..658e8f4 100644 (file)
--- a/lustre/osc/osc_cache.c
+++ b/lustre/osc/osc_cache.c
@@ -2237,10 +2237,11 @@ int osc_io_unplug0(const struct lu_env *env, struct client_obd *cli,
 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)
@@ -2250,16 +2251,24 @@ int osc_prep_async_page(struct osc_object *osc, struct osc_page *ops,
        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);
@@ -2300,7 +2309,7 @@ int osc_queue_async_io(const struct lu_env *env, struct cl_io *io,
        }
 
        /* check if the file's owner/group is over quota */
-       if (!(cmd & OBD_BRW_NOQUOTA)) {
+       if (!io->ci_noquota) {
                struct cl_object *obj;
                struct cl_attr   *attr;
                unsigned int qid[LL_MAXQUOTAS];
@@ -2559,7 +2568,7 @@ out:
        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)
 {
@@ -2619,6 +2628,7 @@ int osc_queue_sync_pages(const struct lu_env *env, const struct cl_io *io,
                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) {
@@ -2628,6 +2638,15 @@ int osc_queue_sync_pages(const struct lu_env *env, const struct cl_io *io,
                        }
                        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);
        }