*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2014, Intel Corporation.
+ * Copyright (c) 2011, 2016, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <libcfs/libcfs.h>
/* fid_build_reg_res_name() */
#include <lustre_fid.h>
+#include <lustre_osc.h>
-#include "osc_cl_internal.h"
+#include "osc_internal.h"
/** \addtogroup osc
* @{
{
__u64 result = 0;
+ CDEBUG(D_DLMTRACE, "flags: %x\n", enqflags);
+
LASSERT((enqflags & ~CEF_MASK) == 0);
if (enqflags & CEF_NONBLOCK)
result |= LDLM_FL_BLOCK_NOWAIT;
- if (enqflags & CEF_ASYNC)
+ if (enqflags & CEF_GLIMPSE)
result |= LDLM_FL_HAS_INTENT;
if (enqflags & CEF_DISCARD_DATA)
result |= LDLM_FL_AST_DISCARD_DATA;
result |= LDLM_FL_TEST_LOCK;
if (enqflags & CEF_LOCK_MATCH)
result |= LDLM_FL_MATCH_LOCK;
+ if (enqflags & CEF_LOCK_NO_EXPAND)
+ result |= LDLM_FL_NO_EXPANSION;
+ if (enqflags & CEF_SPECULATIVE)
+ result |= LDLM_FL_SPECULATIVE;
return result;
}
if (size > dlmlock->l_policy_data.l_extent.end)
size = dlmlock->l_policy_data.l_extent.end + 1;
if (size >= oinfo->loi_kms) {
- LDLM_DEBUG(dlmlock, "lock acquired, setting rss="LPU64
- ", kms="LPU64, lvb->lvb_size, size);
+ LDLM_DEBUG(dlmlock, "lock acquired, setting rss=%llu"
+ ", kms=%llu", lvb->lvb_size, size);
valid |= CAT_KMS;
attr->cat_kms = size;
} else {
LDLM_DEBUG(dlmlock, "lock acquired, setting rss="
- LPU64"; leaving kms="LPU64", end="LPU64,
+ "%llu; leaving kms=%llu, end=%llu",
lvb->lvb_size, oinfo->loi_kms,
dlmlock->l_policy_data.l_extent.end);
}
struct osc_lock *oscl = cookie;
struct cl_lock_slice *slice = &oscl->ols_cl;
struct lu_env *env;
- struct cl_env_nest nest;
int rc;
ENTRY;
- env = cl_env_nested_get(&nest);
+ env = cl_env_percpu_get();
/* should never happen, similar to osc_ldlm_blocking_ast(). */
LASSERT(!IS_ERR(env));
if (oscl->ols_owner != NULL)
cl_sync_io_note(env, oscl->ols_owner, rc);
- cl_env_nested_put(&nest, env);
+ cl_env_percpu_put(env);
RETURN(rc);
}
-static int osc_lock_upcall_agl(void *cookie, struct lustre_handle *lockh,
- int errcode)
+static int osc_lock_upcall_speculative(void *cookie,
+ struct lustre_handle *lockh,
+ int errcode)
{
struct osc_object *osc = cookie;
struct ldlm_lock *dlmlock;
struct lu_env *env;
- struct cl_env_nest nest;
+ __u16 refcheck;
ENTRY;
- env = cl_env_nested_get(&nest);
+ env = cl_env_get(&refcheck);
LASSERT(!IS_ERR(env));
if (errcode == ELDLM_LOCK_MATCHED)
lock_res_and_lock(dlmlock);
LASSERT(dlmlock->l_granted_mode == dlmlock->l_req_mode);
- /* there is no osc_lock associated with AGL lock */
+ /* there is no osc_lock associated with speculative locks */
osc_lock_lvb_update(env, osc, dlmlock, NULL);
unlock_res_and_lock(dlmlock);
out:
cl_object_put(env, osc2cl(osc));
- cl_env_nested_put(&nest, env);
+ cl_env_put(env, &refcheck);
RETURN(ldlm_error2errno(errcode));
}
static int osc_lock_flush(struct osc_object *obj, pgoff_t start, pgoff_t end,
- enum cl_lock_mode mode, int discard)
+ enum cl_lock_mode mode, bool discard)
{
struct lu_env *env;
- struct cl_env_nest nest;
+ __u16 refcheck;
int rc = 0;
int rc2 = 0;
ENTRY;
- env = cl_env_nested_get(&nest);
+ env = cl_env_get(&refcheck);
if (IS_ERR(env))
RETURN(PTR_ERR(env));
rc = 0;
}
- rc2 = osc_lock_discard_pages(env, obj, start, end, mode);
+ rc2 = osc_lock_discard_pages(env, obj, start, end, discard);
if (rc == 0 && rc2 < 0)
rc = rc2;
- cl_env_nested_put(&nest, env);
+ cl_env_put(env, &refcheck);
RETURN(rc);
}
{
struct cl_object *obj = NULL;
int result = 0;
- int discard;
+ bool discard;
enum cl_lock_mode mode = CLM_READ;
ENTRY;
}
case LDLM_CB_CANCELING: {
struct lu_env *env;
- struct cl_env_nest nest;
+ __u16 refcheck;
/*
* This can be called in the context of outer IO, e.g.,
* new environment has to be created to not corrupt outer
* context.
*/
- env = cl_env_nested_get(&nest);
+ env = cl_env_get(&refcheck);
if (IS_ERR(env)) {
result = PTR_ERR(env);
break;
}
result = osc_dlm_blocking_ast0(env, dlmlock, data, flag);
- cl_env_nested_put(&nest, env);
+ cl_env_put(env, &refcheck);
break;
}
default:
static int osc_ldlm_glimpse_ast(struct ldlm_lock *dlmlock, void *data)
{
struct ptlrpc_request *req = data;
- struct cl_env_nest nest;
struct lu_env *env;
struct ost_lvb *lvb;
struct req_capsule *cap;
+ struct cl_object *obj = NULL;
int result;
+ __u16 refcheck;
ENTRY;
LASSERT(lustre_msg_get_opc(req->rq_reqmsg) == LDLM_GL_CALLBACK);
- env = cl_env_nested_get(&nest);
- if (!IS_ERR(env)) {
- struct cl_object *obj = NULL;
+ env = cl_env_get(&refcheck);
+ if (IS_ERR(env))
+ GOTO(out, result = PTR_ERR(env));
- lock_res_and_lock(dlmlock);
- if (dlmlock->l_ast_data != NULL) {
- obj = osc2cl(dlmlock->l_ast_data);
- cl_object_get(obj);
+
+ lock_res_and_lock(dlmlock);
+ if (dlmlock->l_ast_data != NULL) {
+ obj = osc2cl(dlmlock->l_ast_data);
+ cl_object_get(obj);
+ }
+ unlock_res_and_lock(dlmlock);
+
+ if (obj != NULL) {
+ /* Do not grab the mutex of cl_lock for glimpse.
+ * See LU-1274 for details.
+ * BTW, it's okay for cl_lock to be cancelled during
+ * this period because server can handle this race.
+ * See ldlm_server_glimpse_ast() for details.
+ * cl_lock_mutex_get(env, lock); */
+ cap = &req->rq_pill;
+ req_capsule_extend(cap, &RQF_LDLM_GL_CALLBACK);
+ req_capsule_set_size(cap, &RMF_DLM_LVB, RCL_SERVER,
+ sizeof *lvb);
+ result = req_capsule_server_pack(cap);
+ if (result == 0) {
+ lvb = req_capsule_server_get(cap, &RMF_DLM_LVB);
+ result = cl_object_glimpse(env, obj, lvb);
}
- unlock_res_and_lock(dlmlock);
+ if (!exp_connect_lvb_type(req->rq_export))
+ req_capsule_shrink(&req->rq_pill, &RMF_DLM_LVB,
+ sizeof(struct ost_lvb_v1), RCL_SERVER);
+ cl_object_put(env, obj);
+ } else {
+ /*
+ * These errors are normal races, so we don't want to
+ * fill the console with messages by calling
+ * ptlrpc_error()
+ */
+ lustre_pack_reply(req, 1, NULL, NULL);
+ result = -ELDLM_NO_LOCK_DATA;
+ }
+ cl_env_put(env, &refcheck);
+ EXIT;
- if (obj != NULL) {
- /* Do not grab the mutex of cl_lock for glimpse.
- * See LU-1274 for details.
- * BTW, it's okay for cl_lock to be cancelled during
- * this period because server can handle this race.
- * See ldlm_server_glimpse_ast() for details.
- * cl_lock_mutex_get(env, lock); */
- cap = &req->rq_pill;
- req_capsule_extend(cap, &RQF_LDLM_GL_CALLBACK);
- req_capsule_set_size(cap, &RMF_DLM_LVB, RCL_SERVER,
- sizeof *lvb);
- result = req_capsule_server_pack(cap);
- if (result == 0) {
- lvb = req_capsule_server_get(cap, &RMF_DLM_LVB);
- result = cl_object_glimpse(env, obj, lvb);
- }
- if (!exp_connect_lvb_type(req->rq_export))
- req_capsule_shrink(&req->rq_pill,
- &RMF_DLM_LVB,
- sizeof(struct ost_lvb_v1),
- RCL_SERVER);
- cl_object_put(env, obj);
- } else {
- /*
- * These errors are normal races, so we don't want to
- * fill the console with messages by calling
- * ptlrpc_error()
- */
- lustre_pack_reply(req, 1, NULL, NULL);
- result = -ELDLM_NO_LOCK_DATA;
- }
- cl_env_nested_put(&nest, env);
- } else
- result = PTR_ERR(env);
+out:
req->rq_status = result;
RETURN(result);
}
*/
unsigned long osc_ldlm_weigh_ast(struct ldlm_lock *dlmlock)
{
- struct cl_env_nest nest;
struct lu_env *env;
struct osc_object *obj;
struct osc_lock *oscl;
unsigned long weight;
bool found = false;
+ __u16 refcheck;
ENTRY;
might_sleep();
* the upper context because cl_lock_put don't modify environment
* variables. But just in case ..
*/
- env = cl_env_nested_get(&nest);
+ env = cl_env_get(&refcheck);
if (IS_ERR(env))
/* Mostly because lack of memory, do not eliminate this lock */
RETURN(1);
LASSERT(dlmlock->l_resource->lr_type == LDLM_EXTENT);
+ lock_res_and_lock(dlmlock);
obj = dlmlock->l_ast_data;
+ if (obj)
+ cl_object_get(osc2cl(obj));
+ unlock_res_and_lock(dlmlock);
+
if (obj == NULL)
GOTO(out, weight = 1);
EXIT;
out:
- cl_env_nested_put(&nest, env);
+ if (obj)
+ cl_object_put(env, osc2cl(obj));
+
+ cl_env_put(env, &refcheck);
return weight;
}
struct cl_lock_descr *qed_descr = &qed->ols_cl.cls_lock->cll_descr;
struct cl_lock_descr *qing_descr = &qing->ols_cl.cls_lock->cll_descr;
- if (qed->ols_glimpse)
+ if (qed->ols_glimpse || qed->ols_speculative)
return true;
if (qing_descr->cld_mode == CLM_READ && qed_descr->cld_mode == CLM_READ)
struct osc_io *oio = osc_env_io(env);
struct osc_object *osc = cl2osc(slice->cls_obj);
struct osc_lock *oscl = cl2osc_lock(slice);
+ struct obd_export *exp = osc_export(osc);
struct cl_lock *lock = slice->cls_lock;
struct ldlm_res_id *resname = &info->oti_resname;
union ldlm_policy_data *policy = &info->oti_policy;
if (oscl->ols_state == OLS_GRANTED)
RETURN(0);
+ if ((oscl->ols_flags & LDLM_FL_NO_EXPANSION) &&
+ !(exp_connect_lockahead_old(exp) || exp_connect_lockahead(exp))) {
+ result = -EOPNOTSUPP;
+ CERROR("%s: server does not support lockahead/locknoexpand:"
+ "rc = %d\n", exp->exp_obd->obd_name, result);
+ RETURN(result);
+ }
+
if (oscl->ols_flags & LDLM_FL_TEST_LOCK)
GOTO(enqueue_base, 0);
- if (oscl->ols_glimpse) {
- LASSERT(equi(oscl->ols_agl, anchor == NULL));
+ /* For glimpse and/or speculative locks, do not wait for reply from
+ * server on LDLM request */
+ if (oscl->ols_glimpse || oscl->ols_speculative) {
+ /* Speculative and glimpse locks do not have an anchor */
+ LASSERT(equi(oscl->ols_speculative, anchor == NULL));
async = true;
GOTO(enqueue_base, 0);
}
/**
* DLM lock's ast data must be osc_object;
- * if glimpse or AGL lock, async of osc_enqueue_base() must be true,
+ * if glimpse or speculative lock, async of osc_enqueue_base()
+ * must be true
+ *
+ * For non-speculative locks:
* DLM's enqueue callback set to osc_lock_upcall() with cookie as
* osc_lock.
+ * For speculative locks:
+ * osc_lock_upcall_speculative & cookie is the osc object, since
+ * there is no osc_lock
*/
ostid_build_res_name(&osc->oo_oinfo->loi_oi, resname);
osc_lock_build_policy(env, lock, policy);
- if (oscl->ols_agl) {
+ if (oscl->ols_speculative) {
oscl->ols_einfo.ei_cbdata = NULL;
/* hold a reference for callback */
cl_object_get(osc2cl(osc));
- upcall = osc_lock_upcall_agl;
+ upcall = osc_lock_upcall_speculative;
cookie = osc;
}
- result = osc_enqueue_base(osc_export(osc), resname, &oscl->ols_flags,
+ result = osc_enqueue_base(exp, resname, &oscl->ols_flags,
policy, &oscl->ols_lvb,
osc->oo_oinfo->loi_kms_valid,
upcall, cookie,
&oscl->ols_einfo, PTLRPCD_SET, async,
- oscl->ols_agl);
+ oscl->ols_speculative);
if (result == 0) {
if (osc_lock_is_lockless(oscl)) {
oio->oi_lockless = 1;
LASSERT(oscl->ols_hold);
LASSERT(oscl->ols_dlmlock != NULL);
}
- } else if (oscl->ols_agl) {
+ } else if (oscl->ols_speculative) {
cl_object_put(env, osc2cl(osc));
- result = 0;
+ if (oscl->ols_glimpse) {
+ /* hide error for AGL request */
+ result = 0;
+ }
}
out:
{
struct osc_lock *lock = cl2osc_lock(slice);
- (*p)(env, cookie, "%p "LPX64" "LPX64" %d %p ",
+ (*p)(env, cookie, "%p %#llx %#llx %d %p ",
lock->ols_dlmlock, lock->ols_flags, lock->ols_handle.cookie,
lock->ols_state, lock->ols_owner);
osc_lvb_print(env, cookie, p, &lock->ols_lvb);
LASSERT(ols->ols_dlmlock == NULL);
result = osc_lock_flush(osc, descr->cld_start, descr->cld_end,
- descr->cld_mode, 0);
+ descr->cld_mode, false);
if (result)
CERROR("Pages for lockless lock %p were not purged(%d)\n",
ols, result);
return;
if (likely(io->ci_type == CIT_WRITE)) {
- io_start = cl_index(obj, io->u.ci_rw.crw_pos);
- io_end = cl_index(obj, io->u.ci_rw.crw_pos +
- io->u.ci_rw.crw_count - 1);
- if (cl_io_is_append(io)) {
- io_start = 0;
- io_end = CL_PAGE_EOF;
- }
+ io_start = cl_index(obj, io->u.ci_rw.rw_range.cir_pos);
+ io_end = cl_index(obj, io->u.ci_rw.rw_range.cir_pos +
+ io->u.ci_rw.rw_range.cir_count - 1);
} else {
LASSERT(cl_io_is_mkwrite(io));
io_start = io_end = io->u.ci_fault.ft_index;
}
if (descr->cld_mode >= CLM_WRITE &&
- descr->cld_start <= io_start && descr->cld_end >= io_end) {
+ (cl_io_is_append(io) ||
+ (descr->cld_start <= io_start && descr->cld_end >= io_end))) {
struct osc_io *oio = osc_env_io(env);
/* There must be only one lock to match the write region */
INIT_LIST_HEAD(&oscl->ols_wait_entry);
INIT_LIST_HEAD(&oscl->ols_nextlock_oscobj);
+ /* Speculative lock requests must be either no_expand or glimpse
+ * request (CEF_GLIMPSE). non-glimpse no_expand speculative extent
+ * locks will break ofd_intent_cb. (see comment there)*/
+ LASSERT(ergo((enqflags & CEF_SPECULATIVE) != 0,
+ (enqflags & (CEF_LOCK_NO_EXPAND | CEF_GLIMPSE)) != 0));
+
oscl->ols_flags = osc_enq2ldlm_flags(enqflags);
- oscl->ols_agl = !!(enqflags & CEF_AGL);
- if (oscl->ols_agl)
- oscl->ols_flags |= LDLM_FL_BLOCK_NOWAIT;
+ oscl->ols_speculative = !!(enqflags & CEF_SPECULATIVE);
+
if (oscl->ols_flags & LDLM_FL_HAS_INTENT) {
oscl->ols_flags |= LDLM_FL_BLOCK_GRANTED;
oscl->ols_glimpse = 1;
if (io->ci_type == CIT_WRITE || cl_io_is_mkwrite(io))
osc_lock_set_writer(env, io, obj, oscl);
- LDLM_DEBUG_NOLOCK("lock %p, osc lock %p, flags "LPX64"\n",
+ LDLM_DEBUG_NOLOCK("lock %p, osc lock %p, flags %#llx",
lock, oscl, oscl->ols_flags);
return 0;
* with a uniq gid and it conflicts with all other lock modes too
*/
again:
- mode = ldlm_lock_match(osc_export(obj)->exp_obd->obd_namespace,
- flags, resname, LDLM_EXTENT, policy,
- LCK_PR | LCK_PW | LCK_GROUP, &lockh,
+ mode = osc_match_base(osc_export(obj), resname, LDLM_EXTENT, policy,
+ LCK_PR | LCK_PW | LCK_GROUP, &flags, obj, &lockh,
dap_flags & OSC_DAP_FL_CANCELING);
if (mode != 0) {
lock = ldlm_handle2lock(&lockh);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff