*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
*/
#include <sys/dmu.h>
#endif
const dmu_object_type_info_t dmu_ot[DMU_OT_NUMTYPES] = {
- { byteswap_uint8_array, TRUE, "unallocated" },
- { zap_byteswap, TRUE, "object directory" },
- { byteswap_uint64_array, TRUE, "object array" },
- { byteswap_uint8_array, TRUE, "packed nvlist" },
- { byteswap_uint64_array, TRUE, "packed nvlist size" },
- { byteswap_uint64_array, TRUE, "bpobj" },
- { byteswap_uint64_array, TRUE, "bpobj header" },
- { byteswap_uint64_array, TRUE, "SPA space map header" },
- { byteswap_uint64_array, TRUE, "SPA space map" },
- { byteswap_uint64_array, TRUE, "ZIL intent log" },
- { dnode_buf_byteswap, TRUE, "DMU dnode" },
- { dmu_objset_byteswap, TRUE, "DMU objset" },
- { byteswap_uint64_array, TRUE, "DSL directory" },
- { zap_byteswap, TRUE, "DSL directory child map"},
- { zap_byteswap, TRUE, "DSL dataset snap map" },
- { zap_byteswap, TRUE, "DSL props" },
- { byteswap_uint64_array, TRUE, "DSL dataset" },
- { zfs_znode_byteswap, TRUE, "ZFS znode" },
- { zfs_oldacl_byteswap, TRUE, "ZFS V0 ACL" },
- { byteswap_uint8_array, FALSE, "ZFS plain file" },
- { zap_byteswap, TRUE, "ZFS directory" },
- { zap_byteswap, TRUE, "ZFS master node" },
- { zap_byteswap, TRUE, "ZFS delete queue" },
- { byteswap_uint8_array, FALSE, "zvol object" },
- { zap_byteswap, TRUE, "zvol prop" },
- { byteswap_uint8_array, FALSE, "other uint8[]" },
- { byteswap_uint64_array, FALSE, "other uint64[]" },
- { zap_byteswap, TRUE, "other ZAP" },
- { zap_byteswap, TRUE, "persistent error log" },
- { byteswap_uint8_array, TRUE, "SPA history" },
- { byteswap_uint64_array, TRUE, "SPA history offsets" },
- { zap_byteswap, TRUE, "Pool properties" },
- { zap_byteswap, TRUE, "DSL permissions" },
- { zfs_acl_byteswap, TRUE, "ZFS ACL" },
- { byteswap_uint8_array, TRUE, "ZFS SYSACL" },
- { byteswap_uint8_array, TRUE, "FUID table" },
- { byteswap_uint64_array, TRUE, "FUID table size" },
- { zap_byteswap, TRUE, "DSL dataset next clones"},
- { zap_byteswap, TRUE, "scan work queue" },
- { zap_byteswap, TRUE, "ZFS user/group used" },
- { zap_byteswap, TRUE, "ZFS user/group quota" },
- { zap_byteswap, TRUE, "snapshot refcount tags"},
- { zap_byteswap, TRUE, "DDT ZAP algorithm" },
- { zap_byteswap, TRUE, "DDT statistics" },
- { byteswap_uint8_array, TRUE, "System attributes" },
- { zap_byteswap, TRUE, "SA master node" },
- { zap_byteswap, TRUE, "SA attr registration" },
- { zap_byteswap, TRUE, "SA attr layouts" },
- { zap_byteswap, TRUE, "scan translations" },
- { byteswap_uint8_array, FALSE, "deduplicated block" },
- { zap_byteswap, TRUE, "DSL deadlist map" },
- { byteswap_uint64_array, TRUE, "DSL deadlist map hdr" },
- { zap_byteswap, TRUE, "DSL dir clones" },
- { byteswap_uint64_array, TRUE, "bpobj subobj" },
+ { DMU_BSWAP_UINT8, TRUE, "unallocated" },
+ { DMU_BSWAP_ZAP, TRUE, "object directory" },
+ { DMU_BSWAP_UINT64, TRUE, "object array" },
+ { DMU_BSWAP_UINT8, TRUE, "packed nvlist" },
+ { DMU_BSWAP_UINT64, TRUE, "packed nvlist size" },
+ { DMU_BSWAP_UINT64, TRUE, "bpobj" },
+ { DMU_BSWAP_UINT64, TRUE, "bpobj header" },
+ { DMU_BSWAP_UINT64, TRUE, "SPA space map header" },
+ { DMU_BSWAP_UINT64, TRUE, "SPA space map" },
+ { DMU_BSWAP_UINT64, TRUE, "ZIL intent log" },
+ { DMU_BSWAP_DNODE, TRUE, "DMU dnode" },
+ { DMU_BSWAP_OBJSET, TRUE, "DMU objset" },
+ { DMU_BSWAP_UINT64, TRUE, "DSL directory" },
+ { DMU_BSWAP_ZAP, TRUE, "DSL directory child map"},
+ { DMU_BSWAP_ZAP, TRUE, "DSL dataset snap map" },
+ { DMU_BSWAP_ZAP, TRUE, "DSL props" },
+ { DMU_BSWAP_UINT64, TRUE, "DSL dataset" },
+ { DMU_BSWAP_ZNODE, TRUE, "ZFS znode" },
+ { DMU_BSWAP_OLDACL, TRUE, "ZFS V0 ACL" },
+ { DMU_BSWAP_UINT8, FALSE, "ZFS plain file" },
+ { DMU_BSWAP_ZAP, TRUE, "ZFS directory" },
+ { DMU_BSWAP_ZAP, TRUE, "ZFS master node" },
+ { DMU_BSWAP_ZAP, TRUE, "ZFS delete queue" },
+ { DMU_BSWAP_UINT8, FALSE, "zvol object" },
+ { DMU_BSWAP_ZAP, TRUE, "zvol prop" },
+ { DMU_BSWAP_UINT8, FALSE, "other uint8[]" },
+ { DMU_BSWAP_UINT64, FALSE, "other uint64[]" },
+ { DMU_BSWAP_ZAP, TRUE, "other ZAP" },
+ { DMU_BSWAP_ZAP, TRUE, "persistent error log" },
+ { DMU_BSWAP_UINT8, TRUE, "SPA history" },
+ { DMU_BSWAP_UINT64, TRUE, "SPA history offsets" },
+ { DMU_BSWAP_ZAP, TRUE, "Pool properties" },
+ { DMU_BSWAP_ZAP, TRUE, "DSL permissions" },
+ { DMU_BSWAP_ACL, TRUE, "ZFS ACL" },
+ { DMU_BSWAP_UINT8, TRUE, "ZFS SYSACL" },
+ { DMU_BSWAP_UINT8, TRUE, "FUID table" },
+ { DMU_BSWAP_UINT64, TRUE, "FUID table size" },
+ { DMU_BSWAP_ZAP, TRUE, "DSL dataset next clones"},
+ { DMU_BSWAP_ZAP, TRUE, "scan work queue" },
+ { DMU_BSWAP_ZAP, TRUE, "ZFS user/group used" },
+ { DMU_BSWAP_ZAP, TRUE, "ZFS user/group quota" },
+ { DMU_BSWAP_ZAP, TRUE, "snapshot refcount tags"},
+ { DMU_BSWAP_ZAP, TRUE, "DDT ZAP algorithm" },
+ { DMU_BSWAP_ZAP, TRUE, "DDT statistics" },
+ { DMU_BSWAP_UINT8, TRUE, "System attributes" },
+ { DMU_BSWAP_ZAP, TRUE, "SA master node" },
+ { DMU_BSWAP_ZAP, TRUE, "SA attr registration" },
+ { DMU_BSWAP_ZAP, TRUE, "SA attr layouts" },
+ { DMU_BSWAP_ZAP, TRUE, "scan translations" },
+ { DMU_BSWAP_UINT8, FALSE, "deduplicated block" },
+ { DMU_BSWAP_ZAP, TRUE, "DSL deadlist map" },
+ { DMU_BSWAP_UINT64, TRUE, "DSL deadlist map hdr" },
+ { DMU_BSWAP_ZAP, TRUE, "DSL dir clones" },
+ { DMU_BSWAP_UINT64, TRUE, "bpobj subobj" }
+};
+
+const dmu_object_byteswap_info_t dmu_ot_byteswap[DMU_BSWAP_NUMFUNCS] = {
+ { byteswap_uint8_array, "uint8" },
+ { byteswap_uint16_array, "uint16" },
+ { byteswap_uint32_array, "uint32" },
+ { byteswap_uint64_array, "uint64" },
+ { zap_byteswap, "zap" },
+ { dnode_buf_byteswap, "dnode" },
+ { dmu_objset_byteswap, "objset" },
+ { zfs_znode_byteswap, "znode" },
+ { zfs_oldacl_byteswap, "oldacl" },
+ { zfs_acl_byteswap, "acl" }
};
int
DB_DNODE_ENTER(db);
dn = DB_DNODE(db);
- if (type > DMU_OT_NUMTYPES) {
+ if (!DMU_OT_IS_VALID(type)) {
error = EINVAL;
} else if (dn->dn_bonus != db) {
error = EINVAL;
return 0;
}
+static void
+dmu_bio_put(struct bio *bio)
+{
+ struct bio *bio_next;
+
+ while (bio) {
+ bio_next = bio->bi_next;
+ bio_put(bio);
+ bio = bio_next;
+ }
+}
+
+static int
+dmu_bio_clone(struct bio *bio, struct bio **bio_copy)
+{
+ struct bio *bio_root = NULL;
+ struct bio *bio_last = NULL;
+ struct bio *bio_new;
+
+ if (bio == NULL)
+ return EINVAL;
+
+ while (bio) {
+ bio_new = bio_clone(bio, GFP_NOIO);
+ if (bio_new == NULL) {
+ dmu_bio_put(bio_root);
+ return ENOMEM;
+ }
+
+ if (bio_last) {
+ bio_last->bi_next = bio_new;
+ bio_last = bio_new;
+ } else {
+ bio_root = bio_new;
+ bio_last = bio_new;
+ }
+
+ bio = bio->bi_next;
+ }
+
+ *bio_copy = bio_root;
+
+ return 0;
+}
+
int
dmu_read_req(objset_t *os, uint64_t object, struct request *req)
{
uint64_t size = blk_rq_bytes(req);
uint64_t offset = blk_rq_pos(req) << 9;
+ struct bio *bio_saved = req->bio;
dmu_buf_t **dbp;
int numbufs, i, err;
if (err)
return (err);
+ /*
+ * Clone the bio list so the bv->bv_offset and bv->bv_len members
+ * can be safely modified. The original bio list is relinked in to
+ * the request when the function exits. This is required because
+ * some file systems blindly assume that these values will remain
+ * constant between bio_submit() and the IO completion callback.
+ */
+ err = dmu_bio_clone(bio_saved, &req->bio);
+ if (err)
+ goto error;
+
for (i = 0; i < numbufs; i++) {
int tocpy, didcpy, bufoff;
dmu_buf_t *db = dbp[i];
offset += didcpy;
err = 0;
}
+
+ dmu_bio_put(req->bio);
+ req->bio = bio_saved;
+error:
dmu_buf_rele_array(dbp, numbufs, FTAG);
return (err);
{
uint64_t size = blk_rq_bytes(req);
uint64_t offset = blk_rq_pos(req) << 9;
+ struct bio *bio_saved = req->bio;
dmu_buf_t **dbp;
int numbufs;
int err = 0;
if (err)
return (err);
+ /*
+ * Clone the bio list so the bv->bv_offset and bv->bv_len members
+ * can be safely modified. The original bio list is relinked in to
+ * the request when the function exits. This is required because
+ * some file systems blindly assume that these values will remain
+ * constant between bio_submit() and the IO completion callback.
+ */
+ err = dmu_bio_clone(bio_saved, &req->bio);
+ if (err)
+ goto error;
+
for (i = 0; i < numbufs; i++) {
int tocpy, didcpy, bufoff;
dmu_buf_t *db = dbp[i];
err = 0;
}
+ dmu_bio_put(req->bio);
+ req->bio = bio_saved;
+error:
dmu_buf_rele_array(dbp, numbufs, FTAG);
+
return (err);
}
dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp, zio_prop_t *zp)
{
dmu_object_type_t type = dn ? dn->dn_type : DMU_OT_OBJSET;
- boolean_t ismd = (level > 0 || dmu_ot[type].ot_metadata ||
+ boolean_t ismd = (level > 0 || DMU_OT_IS_METADATA(type) ||
(wp & WP_SPILL));
enum zio_checksum checksum = os->os_checksum;
enum zio_compress compress = os->os_compress;
dbuf_init();
zfetch_init();
dmu_tx_init();
- arc_init();
l2arc_init();
+ arc_init();
}
void
dmu_fini(void)
{
- l2arc_fini();
arc_fini();
+ l2arc_fini();
dmu_tx_fini();
zfetch_fini();
dbuf_fini();
EXPORT_SYMBOL(dmu_bonus_hold);
EXPORT_SYMBOL(dmu_buf_hold_array_by_bonus);
EXPORT_SYMBOL(dmu_buf_rele_array);
+EXPORT_SYMBOL(dmu_prefetch);
EXPORT_SYMBOL(dmu_free_range);
+EXPORT_SYMBOL(dmu_free_long_range);
+EXPORT_SYMBOL(dmu_free_object);
EXPORT_SYMBOL(dmu_read);
EXPORT_SYMBOL(dmu_write);
+EXPORT_SYMBOL(dmu_prealloc);
EXPORT_SYMBOL(dmu_object_info);
EXPORT_SYMBOL(dmu_object_info_from_dnode);
EXPORT_SYMBOL(dmu_object_info_from_db);
EXPORT_SYMBOL(dmu_object_set_blocksize);
EXPORT_SYMBOL(dmu_object_set_checksum);
EXPORT_SYMBOL(dmu_object_set_compress);
+EXPORT_SYMBOL(dmu_write_policy);
+EXPORT_SYMBOL(dmu_sync);
EXPORT_SYMBOL(dmu_request_arcbuf);
EXPORT_SYMBOL(dmu_return_arcbuf);
EXPORT_SYMBOL(dmu_assign_arcbuf);
git://git.camperquake.de / zfs.git / blobdiff