3246 ZFS I/O deadman thread

[zfs.git] / module / zfs / dmu_objset.c

diff --git a/module/zfs/dmu_objset.c b/module/zfs/dmu_objset.c
index 7da5c1a..50673dc 100644 (file)
--- a/module/zfs/dmu_objset.c
+++ b/module/zfs/dmu_objset.c
@@ -262,7 +262,7 @@ dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
 
        ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock));
 
-       os = kmem_zalloc(sizeof (objset_t), KM_SLEEP);
+       os = kmem_zalloc(sizeof (objset_t), KM_PUSHPAGE);
        os->os_dsl_dataset = ds;
        os->os_spa = spa;
        os->os_rootbp = bp;
@@ -848,7 +848,7 @@ snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx)
                if (strlen(sn->htag) + MAX_TAG_PREFIX_LEN >= MAXNAMELEN)
                        return (E2BIG);
 
-               sn->ha = kmem_alloc(sizeof (struct dsl_ds_holdarg), KM_SLEEP);
+               sn->ha = kmem_alloc(sizeof(struct dsl_ds_holdarg), KM_PUSHPAGE);
                sn->ha->temphold = B_TRUE;
                sn->ha->htag = sn->htag;
        }
@@ -910,10 +910,8 @@ dmu_objset_snapshot_one(const char *name, void *arg)
         * permission checks for the starting dataset have already been
         * performed in zfs_secpolicy_snapshot()
         */
-#ifdef HAVE_ZPL
        if (sn->recursive && (err = zfs_secpolicy_snapshot_perms(name, CRED())))
                return (err);
-#endif
 
        err = dmu_objset_hold(name, sn, &os);
        if (err != 0)
@@ -1184,17 +1182,6 @@ dmu_objset_is_dirty(objset_t *os, uint64_t txg)
            !list_is_empty(&os->os_free_dnodes[txg & TXG_MASK]));
 }
 
-boolean_t
-dmu_objset_is_dirty_anywhere(objset_t *os)
-{
-       int t;
-
-       for (t = 0; t < TXG_SIZE; t++)
-               if (dmu_objset_is_dirty(os, t))
-                       return (B_TRUE);
-       return (B_FALSE);
-}
-
 static objset_used_cb_t *used_cbs[DMU_OST_NUMTYPES];
 
 void
@@ -1587,6 +1574,12 @@ dmu_snapshot_list_next(objset_t *os, int namelen, char *name,
 }
 
 int
+dmu_snapshot_lookup(objset_t *os, const char *name, uint64_t *value)
+{
+       return dsl_dataset_snap_lookup(os->os_dsl_dataset, name, value);
+}
+
+int
 dmu_dir_list_next(objset_t *os, int namelen, char *name,
     uint64_t *idp, uint64_t *offp)
 {
@@ -1679,7 +1672,7 @@ dmu_objset_find_spa(spa_t *spa, const char *name,
        }
 
        thisobj = dd->dd_phys->dd_head_dataset_obj;
-       attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
+       attr = kmem_alloc(sizeof (zap_attribute_t), KM_PUSHPAGE);
        dp = dd->dd_pool;
 
        /*
@@ -1800,7 +1793,10 @@ dmu_objset_get_user(objset_t *os)
 }
 
 #if defined(_KERNEL) && defined(HAVE_SPL)
+EXPORT_SYMBOL(dmu_objset_zil);
 EXPORT_SYMBOL(dmu_objset_pool);
+EXPORT_SYMBOL(dmu_objset_ds);
+EXPORT_SYMBOL(dmu_objset_type);
 EXPORT_SYMBOL(dmu_objset_name);
 EXPORT_SYMBOL(dmu_objset_hold);
 EXPORT_SYMBOL(dmu_objset_own);
@@ -1813,6 +1809,7 @@ EXPORT_SYMBOL(dmu_objset_destroy);
 EXPORT_SYMBOL(dmu_objset_snapshot);
 EXPORT_SYMBOL(dmu_objset_stats);
 EXPORT_SYMBOL(dmu_objset_fast_stat);
+EXPORT_SYMBOL(dmu_objset_spa);
 EXPORT_SYMBOL(dmu_objset_space);
 EXPORT_SYMBOL(dmu_objset_fsid_guid);
 EXPORT_SYMBOL(dmu_objset_find);