-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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 2008 Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Implementation of cl_io for OSC layer.
*
* Author: Nikita Danilov <nikita.danilov@sun.com>
+ * Author: Jinshan Xiong <jinshan.xiong@whamcloud.com>
*/
#define DEBUG_SUBSYSTEM S_OSC
-#include "osc_cl_internal.h"
+#include <lustre_obdo.h>
+#include <lustre_osc.h>
+#include <linux/pagevec.h>
-/** \addtogroup osc
- * @{
- */
+#include "osc_internal.h"
-/*****************************************************************************
- *
- * Type conversions.
- *
+/** \addtogroup osc
+ * @{
*/
-static struct osc_req *cl2osc_req(const struct cl_req_slice *slice)
-{
- LINVRNT(slice->crs_dev->cd_lu_dev.ld_type == &osc_device_type);
- return container_of0(slice, struct osc_req, or_cl);
-}
-
-static struct osc_io *cl2osc_io(const struct lu_env *env,
- const struct cl_io_slice *slice)
-{
- struct osc_io *oio = container_of0(slice, struct osc_io, oi_cl);
- LINVRNT(oio == osc_env_io(env));
- return oio;
-}
-
-static struct osc_page *osc_cl_page_osc(struct cl_page *page)
-{
- const struct cl_page_slice *slice;
-
- slice = cl_page_at(page, &osc_device_type);
- LASSERT(slice != NULL);
-
- return cl2osc_page(slice);
-}
-
-
/*****************************************************************************
*
* io operations.
{
}
-struct cl_page *osc_oap2cl_page(struct osc_async_page *oap)
+void osc_read_ahead_release(const struct lu_env *env, void *cbdata)
{
- return container_of(oap, struct osc_page, ops_oap)->ops_cl.cpl_page;
+ struct ldlm_lock *dlmlock = cbdata;
+ struct lustre_handle lockh;
+
+ ldlm_lock2handle(dlmlock, &lockh);
+ ldlm_lock_decref(&lockh, LCK_PR);
+ LDLM_LOCK_PUT(dlmlock);
}
+EXPORT_SYMBOL(osc_read_ahead_release);
-static void osc_io_unplug(const struct lu_env *env, struct osc_object *osc,
- struct client_obd *cli)
+static int osc_io_read_ahead(const struct lu_env *env,
+ const struct cl_io_slice *ios,
+ pgoff_t start, struct cl_read_ahead *ra)
{
- loi_list_maint(cli, osc->oo_oinfo);
- osc_check_rpcs(env, cli);
- client_obd_list_unlock(&cli->cl_loi_list_lock);
+ struct osc_object *osc = cl2osc(ios->cis_obj);
+ struct ldlm_lock *dlmlock;
+ int result = -ENODATA;
+ ENTRY;
+
+ dlmlock = osc_dlmlock_at_pgoff(env, osc, start, 0);
+ if (dlmlock != NULL) {
+ LASSERT(dlmlock->l_ast_data == osc);
+ if (dlmlock->l_req_mode != LCK_PR) {
+ struct lustre_handle lockh;
+ ldlm_lock2handle(dlmlock, &lockh);
+ ldlm_lock_addref(&lockh, LCK_PR);
+ ldlm_lock_decref(&lockh, dlmlock->l_req_mode);
+ }
+
+ ra->cra_rpc_size = osc_cli(osc)->cl_max_pages_per_rpc;
+ ra->cra_end = cl_index(osc2cl(osc),
+ dlmlock->l_policy_data.l_extent.end);
+ ra->cra_release = osc_read_ahead_release;
+ ra->cra_cbdata = dlmlock;
+ if (ra->cra_end != CL_PAGE_EOF)
+ ra->cra_contention = true;
+ result = 0;
+ }
+
+ RETURN(result);
}
/**
* layer. Iterates over pages in the in-queue, prepares each for io by calling
* cl_page_prep() and then either submits them through osc_io_submit_page()
* or, if page is already submitted, changes osc flags through
- * osc_set_async_flags_base().
+ * osc_set_async_flags().
*/
-static int osc_io_submit(const struct lu_env *env,
- const struct cl_io_slice *ios,
- enum cl_req_type crt, struct cl_2queue *queue,
- enum cl_req_priority priority)
+int osc_io_submit(const struct lu_env *env, const struct cl_io_slice *ios,
+ enum cl_req_type crt, struct cl_2queue *queue)
{
- struct cl_page *page;
- struct cl_page *tmp;
- struct osc_object *osc0 = NULL;
- struct client_obd *cli = NULL;
- struct osc_object *osc = NULL; /* to keep gcc happy */
- struct osc_page *opg;
- struct cl_io *io;
-
- struct cl_page_list *qin = &queue->c2_qin;
- struct cl_page_list *qout = &queue->c2_qout;
- int queued = 0;
- int result = 0;
-
- LASSERT(qin->pl_nr > 0);
-
- CDEBUG(D_INFO, "%i %i\n", qin->pl_nr, crt);
+ struct cl_page *page;
+ struct cl_page *tmp;
+ struct client_obd *cli = NULL;
+ struct osc_object *osc = NULL; /* to keep gcc happy */
+ struct osc_page *opg;
+ struct cl_io *io;
+ struct list_head list = LIST_HEAD_INIT(list);
+
+ struct cl_page_list *qin = &queue->c2_qin;
+ struct cl_page_list *qout = &queue->c2_qout;
+ unsigned int queued = 0;
+ int result = 0;
+ int brw_flags;
+ unsigned int max_pages;
+ unsigned int ppc_bits; /* pages per chunk bits */
+ unsigned int ppc;
+ bool sync_queue = false;
+
+ LASSERT(qin->pl_nr > 0);
+
+ CDEBUG(D_CACHE|D_READA, "%d %d\n", qin->pl_nr, crt);
+
+ osc = cl2osc(ios->cis_obj);
+ cli = osc_cli(osc);
+ max_pages = cli->cl_max_pages_per_rpc;
+ ppc_bits = cli->cl_chunkbits - PAGE_SHIFT;
+ ppc = 1 << ppc_bits;
+
+ brw_flags = osc_io_srvlock(cl2osc_io(env, ios)) ? OBD_BRW_SRVLOCK : 0;
+ brw_flags |= crt == CRT_WRITE ? OBD_BRW_WRITE : OBD_BRW_READ;
+ if (crt == CRT_READ && ios->cis_io->ci_ndelay)
+ brw_flags |= OBD_BRW_NDELAY;
+
/*
* NOTE: here @page is a top-level page. This is done to avoid
* creation of sub-page-list.
*/
cl_page_list_for_each_safe(page, tmp, qin) {
struct osc_async_page *oap;
- struct obd_export *exp;
/* Top level IO. */
io = page->cp_owner;
LASSERT(io != NULL);
- opg = osc_cl_page_osc(page);
- oap = &opg->ops_oap;
- osc = cl2osc(opg->ops_cl.cpl_obj);
- exp = osc_export(osc);
+ opg = osc_cl_page_osc(page, osc);
+ oap = &opg->ops_oap;
+ LASSERT(osc == oap->oap_obj);
- if (priority > CRP_NORMAL) {
- cfs_spin_lock(&oap->oap_lock);
- oap->oap_async_flags |= ASYNC_HP;
- cfs_spin_unlock(&oap->oap_lock);
- }
- /*
- * This can be checked without cli->cl_loi_list_lock, because
- * ->oap_*_item are always manipulated when the page is owned.
- */
- if (!cfs_list_empty(&oap->oap_urgent_item) ||
- !cfs_list_empty(&oap->oap_rpc_item)) {
+ if (!list_empty(&oap->oap_pending_item) ||
+ !list_empty(&oap->oap_rpc_item)) {
+ CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
+ oap, opg);
result = -EBUSY;
break;
}
- if (osc0 == NULL) { /* first iteration */
- cli = &exp->exp_obd->u.cli;
- osc0 = osc;
- } else /* check that all pages are against the same object
- * (for now) */
- LASSERT(osc == osc0);
- if (queued++ == 0)
- client_obd_list_lock(&cli->cl_loi_list_lock);
result = cl_page_prep(env, io, page, crt);
- if (result == 0) {
- cl_page_list_move(qout, qin, page);
- if (cfs_list_empty(&oap->oap_pending_item)) {
- osc_io_submit_page(env, cl2osc_io(env, ios),
- opg, crt);
- } else {
- result = osc_set_async_flags_base(cli,
- osc->oo_oinfo,
- oap,
- OSC_FLAGS);
- /*
- * bug 18881: we can't just break out here when
- * error occurrs after cl_page_prep has been
- * called against the page. The correct
- * way is to call page's completion routine,
- * as in osc_oap_interrupted. For simplicity,
- * we just force osc_set_async_flags_base() to
- * not return error.
- */
- LASSERT(result == 0);
- }
- opg->ops_submit_time = cfs_time_current();
- } else {
+ if (result != 0) {
LASSERT(result < 0);
if (result != -EALREADY)
break;
* is not dirty.
*/
result = 0;
+ continue;
}
- /*
- * We might hold client_obd_list_lock() for too long and cause
- * soft-lockups (see bug 16651). But on the other hand, pages
- * are queued here with ASYNC_URGENT flag, thus will be sent
- * out immediately once osc_io_unplug() be called, possibly
- * resulting sub-optimal RPCs.
- *
- * We think creating optimal-sized RPCs is more important than
- * avoiding the transient soft-lockups, plus I believe the
- * soft-locks only happen in full debug testing.
- */
- }
-
- LASSERT(ergo(result == 0, cli != NULL));
- LASSERT(ergo(result == 0, osc == osc0));
-
- if (queued > 0)
- osc_io_unplug(env, osc, cli);
- CDEBUG(D_INFO, "%i/%i %i\n", qin->pl_nr, qout->pl_nr, result);
- return qout->pl_nr > 0 ? 0 : result;
-}
-
-static void osc_page_touch_at(const struct lu_env *env,
- struct cl_object *obj, pgoff_t idx, unsigned to)
-{
- struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
- struct cl_attr *attr = &osc_env_info(env)->oti_attr;
- int valid;
- __u64 kms;
-
- /* offset within stripe */
- kms = cl_offset(obj, idx) + to;
-
- cl_object_attr_lock(obj);
- /*
- * XXX old code used
- *
- * ll_inode_size_lock(inode, 0); lov_stripe_lock(lsm);
- *
- * here
- */
- CDEBUG(D_INODE, "stripe KMS %sincreasing "LPU64"->"LPU64" "LPU64"\n",
- kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms,
- loi->loi_lvb.lvb_size);
-
- valid = 0;
- if (kms > loi->loi_kms) {
- attr->cat_kms = kms;
- valid |= CAT_KMS;
- }
- if (kms > loi->loi_lvb.lvb_size) {
- attr->cat_size = kms;
- valid |= CAT_SIZE;
- }
- cl_object_attr_set(env, obj, attr, valid);
- cl_object_attr_unlock(obj);
+ spin_lock(&oap->oap_lock);
+ oap->oap_async_flags = ASYNC_URGENT|ASYNC_READY;
+ oap->oap_async_flags |= ASYNC_COUNT_STABLE;
+ spin_unlock(&oap->oap_lock);
+
+ osc_page_submit(env, opg, crt, brw_flags);
+ list_add_tail(&oap->oap_pending_item, &list);
+
+ if (page->cp_sync_io != NULL)
+ cl_page_list_move(qout, qin, page);
+ else /* async IO */
+ cl_page_list_del(env, qin, page);
+
+ queued++;
+ if (queued == max_pages) {
+ sync_queue = true;
+ } else if (crt == CRT_WRITE) {
+ unsigned int chunks;
+ unsigned int next_chunks;
+
+ chunks = (queued + ppc - 1) >> ppc_bits;
+ /* chunk number if add another page */
+ next_chunks = (queued + ppc) >> ppc_bits;
+
+ /* next page will excceed write chunk limit */
+ if (chunks == osc_max_write_chunks(cli) &&
+ next_chunks > chunks)
+ sync_queue = true;
+ }
+
+ if (sync_queue) {
+ result = osc_queue_sync_pages(env, io, osc, &list,
+ brw_flags);
+ if (result < 0)
+ break;
+ queued = 0;
+ sync_queue = false;
+ }
+ }
+
+ if (queued > 0)
+ result = osc_queue_sync_pages(env, io, osc, &list, brw_flags);
+
+ /* Update c/mtime for sync write. LU-7310 */
+ if (crt == CRT_WRITE && qout->pl_nr > 0 && result == 0) {
+ struct cl_object *obj = ios->cis_obj;
+ struct cl_attr *attr = &osc_env_info(env)->oti_attr;
+
+ cl_object_attr_lock(obj);
+ attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
+ cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
+ cl_object_attr_unlock(obj);
+ }
+
+ CDEBUG(D_INFO, "%d/%d %d\n", qin->pl_nr, qout->pl_nr, result);
+ return qout->pl_nr > 0 ? 0 : result;
}
+EXPORT_SYMBOL(osc_io_submit);
/**
- * This is called when a page is accessed within file in a way that creates
- * new page, if one were missing (i.e., if there were a hole at that place in
- * the file, or accessed page is beyond the current file size). Examples:
- * ->commit_write() and ->nopage() methods.
+ * This is called to update the attributes when modifying a specific page,
+ * both when making new pages and when doing updates to existing cached pages.
*
* Expand stripe KMS if necessary.
*/
-static void osc_page_touch(const struct lu_env *env,
- struct osc_page *opage, unsigned to)
+void osc_page_touch_at(const struct lu_env *env, struct cl_object *obj,
+ pgoff_t idx, size_t to)
{
- struct cl_page *page = opage->ops_cl.cpl_page;
- struct cl_object *obj = opage->ops_cl.cpl_obj;
+ struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
+ struct cl_attr *attr = &osc_env_info(env)->oti_attr;
+ int valid;
+ __u64 kms;
+
+ ENTRY;
+
+ /* offset within stripe */
+ kms = cl_offset(obj, idx) + to;
+
+ cl_object_attr_lock(obj);
+ CDEBUG(D_INODE, "stripe KMS %sincreasing %llu->%llu %llu\n",
+ kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms,
+ loi->loi_lvb.lvb_size);
+
+ attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
+ valid = CAT_MTIME | CAT_CTIME;
+ if (kms > loi->loi_kms) {
+ attr->cat_kms = kms;
+ valid |= CAT_KMS;
+ }
+ if (kms > loi->loi_lvb.lvb_size) {
+ attr->cat_size = kms;
+ valid |= CAT_SIZE;
+ }
+ cl_object_attr_update(env, obj, attr, valid);
+ cl_object_attr_unlock(obj);
+
+ EXIT;
+}
- osc_page_touch_at(env, obj, page->cp_index, to);
+int osc_io_commit_async(const struct lu_env *env,
+ const struct cl_io_slice *ios,
+ struct cl_page_list *qin, int from, int to,
+ cl_commit_cbt cb)
+{
+ struct cl_io *io = ios->cis_io;
+ struct osc_io *oio = cl2osc_io(env, ios);
+ struct osc_object *osc = cl2osc(ios->cis_obj);
+ struct cl_page *page;
+ struct cl_page *last_page;
+ struct osc_page *opg;
+ struct pagevec *pvec = &osc_env_info(env)->oti_pagevec;
+ int result = 0;
+ ENTRY;
+
+ LASSERT(qin->pl_nr > 0);
+
+ /* Handle partial page cases */
+ last_page = cl_page_list_last(qin);
+ if (oio->oi_lockless) {
+ page = cl_page_list_first(qin);
+ if (page == last_page) {
+ cl_page_clip(env, page, from, to);
+ } else {
+ if (from != 0)
+ cl_page_clip(env, page, from, PAGE_SIZE);
+ if (to != PAGE_SIZE)
+ cl_page_clip(env, last_page, 0, to);
+ }
+ }
+
+ ll_pagevec_init(pvec, 0);
+
+ while (qin->pl_nr > 0) {
+ struct osc_async_page *oap;
+
+ page = cl_page_list_first(qin);
+ opg = osc_cl_page_osc(page, osc);
+ oap = &opg->ops_oap;
+
+ LASSERTF(osc == oap->oap_obj,
+ "obj mismatch: %p / %p\n", osc, oap->oap_obj);
+
+ if (!list_empty(&oap->oap_rpc_item)) {
+ CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
+ oap, opg);
+ result = -EBUSY;
+ break;
+ }
+
+ /* The page may be already in dirty cache. */
+ if (list_empty(&oap->oap_pending_item)) {
+ result = osc_page_cache_add(env, opg, io, cb);
+ if (result != 0)
+ break;
+ }
+
+ osc_page_touch_at(env, osc2cl(osc), osc_index(opg),
+ page == last_page ? to : PAGE_SIZE);
+
+ cl_page_list_del(env, qin, page);
+
+ /* if there are no more slots, do the callback & reinit */
+ if (pagevec_add(pvec, page->cp_vmpage) == 0) {
+ (*cb)(env, io, pvec);
+ pagevec_reinit(pvec);
+ }
+ }
+
+ /* Clean up any partially full pagevecs */
+ if (pagevec_count(pvec) != 0)
+ (*cb)(env, io, pvec);
+
+ /* Can't access these pages any more. Page can be in transfer and
+ * complete at any time. */
+
+ /* for sync write, kernel will wait for this page to be flushed before
+ * osc_io_end() is called, so release it earlier.
+ * for mkwrite(), it's known there is no further pages. */
+ if (cl_io_is_sync_write(io) && oio->oi_active != NULL) {
+ osc_extent_release(env, oio->oi_active);
+ oio->oi_active = NULL;
+ }
+
+ CDEBUG(D_INFO, "%d %d\n", qin->pl_nr, result);
+ RETURN(result);
}
+EXPORT_SYMBOL(osc_io_commit_async);
-/**
- * Implements cl_io_operations::cio_prepare_write() method for osc layer.
- *
- * \retval -EIO transfer initiated against this osc will most likely fail
- * \retval 0 transfer initiated against this osc will most likely succeed.
- *
- * The reason for this check is to immediately return an error to the caller
- * in the case of a deactivated import. Note, that import can be deactivated
- * later, while pages, dirtied by this IO, are still in the cache, but this is
- * irrelevant, because that would still return an error to the application (if
- * it does fsync), but many applications don't do fsync because of performance
- * issues, and we wanted to return an -EIO at write time to notify the
- * application.
- */
-static int osc_io_prepare_write(const struct lu_env *env,
- const struct cl_io_slice *ios,
- const struct cl_page_slice *slice,
- unsigned from, unsigned to)
+static bool osc_import_not_healthy(struct obd_import *imp)
{
- struct osc_device *dev = lu2osc_dev(slice->cpl_obj->co_lu.lo_dev);
- struct obd_import *imp = class_exp2cliimp(dev->od_exp);
+ return imp->imp_invalid || imp->imp_deactive ||
+ !(imp->imp_state == LUSTRE_IMP_FULL ||
+ imp->imp_state == LUSTRE_IMP_IDLE);
+}
- ENTRY;
+int osc_io_iter_init(const struct lu_env *env, const struct cl_io_slice *ios)
+{
+ struct osc_object *osc = cl2osc(ios->cis_obj);
+ struct obd_import *imp = osc_cli(osc)->cl_import;
+ struct osc_io *oio = osc_env_io(env);
+ int rc = -EIO;
+ ENTRY;
+
+ spin_lock(&imp->imp_lock);
+ /**
+ * check whether this OSC device is available for non-delay read,
+ * fast switching mirror if we haven't tried all mirrors.
+ */
+ if (ios->cis_io->ci_type == CIT_READ && ios->cis_io->ci_ndelay &&
+ !ios->cis_io->ci_tried_all_mirrors && osc_import_not_healthy(imp)) {
+ rc = -EWOULDBLOCK;
+ } else if (likely(!imp->imp_invalid)) {
+ atomic_inc(&osc->oo_nr_ios);
+ oio->oi_is_active = 1;
+ rc = 0;
+ }
+ spin_unlock(&imp->imp_lock);
+
+ if (cfs_capable(CFS_CAP_SYS_RESOURCE))
+ oio->oi_cap_sys_resource = 1;
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(osc_io_iter_init);
- /*
- * This implements OBD_BRW_CHECK logic from old client.
- */
+int osc_io_rw_iter_init(const struct lu_env *env,
+ const struct cl_io_slice *ios)
+{
+ struct cl_io *io = ios->cis_io;
+ struct osc_io *oio = osc_env_io(env);
+ struct osc_object *osc = cl2osc(ios->cis_obj);
+ unsigned long npages;
+ ENTRY;
+
+ if (cl_io_is_append(io))
+ RETURN(osc_io_iter_init(env, ios));
+
+ npages = io->u.ci_rw.crw_count >> PAGE_SHIFT;
+ if (io->u.ci_rw.crw_pos & ~PAGE_MASK)
+ ++npages;
- RETURN(imp == NULL || imp->imp_invalid ? -EIO : 0);
+ oio->oi_lru_reserved = osc_lru_reserve(osc_cli(osc), npages);
+
+ RETURN(osc_io_iter_init(env, ios));
}
+EXPORT_SYMBOL(osc_io_rw_iter_init);
-static int osc_io_commit_write(const struct lu_env *env,
- const struct cl_io_slice *ios,
- const struct cl_page_slice *slice,
- unsigned from, unsigned to)
+void osc_io_iter_fini(const struct lu_env *env,
+ const struct cl_io_slice *ios)
{
- struct osc_page *opg = cl2osc_page(slice);
- struct osc_object *obj = cl2osc(opg->ops_cl.cpl_obj);
- struct osc_async_page *oap = &opg->ops_oap;
- ENTRY;
+ struct osc_io *oio = osc_env_io(env);
- LASSERT(to > 0);
- /*
- * XXX instead of calling osc_page_touch() here and in
- * osc_io_fault_start() it might be more logical to introduce
- * cl_page_touch() method, that generic cl_io_commit_write() and page
- * fault code calls.
- */
- osc_page_touch(env, cl2osc_page(slice), to);
- if (!client_is_remote(osc_export(obj)) &&
- cfs_capable(CFS_CAP_SYS_RESOURCE))
- oap->oap_brw_flags |= OBD_BRW_NOQUOTA;
+ if (oio->oi_is_active) {
+ struct osc_object *osc = cl2osc(ios->cis_obj);
- RETURN(0);
+ oio->oi_is_active = 0;
+ LASSERT(atomic_read(&osc->oo_nr_ios) > 0);
+ if (atomic_dec_and_test(&osc->oo_nr_ios))
+ wake_up_all(&osc->oo_io_waitq);
+ }
}
+EXPORT_SYMBOL(osc_io_iter_fini);
-static int osc_io_fault_start(const struct lu_env *env,
- const struct cl_io_slice *ios)
+void osc_io_rw_iter_fini(const struct lu_env *env,
+ const struct cl_io_slice *ios)
{
- struct cl_io *io;
- struct cl_fault_io *fio;
+ struct osc_io *oio = osc_env_io(env);
+ struct osc_object *osc = cl2osc(ios->cis_obj);
- ENTRY;
+ if (oio->oi_lru_reserved > 0) {
+ osc_lru_unreserve(osc_cli(osc), oio->oi_lru_reserved);
+ oio->oi_lru_reserved = 0;
+ }
+ oio->oi_write_osclock = NULL;
- io = ios->cis_io;
- fio = &io->u.ci_fault;
- CDEBUG(D_INFO, "%lu %i %i\n",
- fio->ft_index, fio->ft_writable, fio->ft_nob);
- /*
- * If mapping is writeable, adjust kms to cover this page,
- * but do not extend kms beyond actual file size.
- * See bug 10919.
- */
- if (fio->ft_writable)
- osc_page_touch_at(env, ios->cis_obj,
- fio->ft_index, fio->ft_nob);
- RETURN(0);
+ osc_io_iter_fini(env, ios);
+}
+EXPORT_SYMBOL(osc_io_rw_iter_fini);
+
+int osc_io_fault_start(const struct lu_env *env, const struct cl_io_slice *ios)
+{
+ struct cl_io *io;
+ struct cl_fault_io *fio;
+ ENTRY;
+
+ io = ios->cis_io;
+ fio = &io->u.ci_fault;
+ CDEBUG(D_INFO, "%lu %d %zu\n",
+ fio->ft_index, fio->ft_writable, fio->ft_nob);
+ /*
+ * If mapping is writeable, adjust kms to cover this page,
+ * but do not extend kms beyond actual file size.
+ * See bug 10919.
+ */
+ if (fio->ft_writable)
+ osc_page_touch_at(env, ios->cis_obj,
+ fio->ft_index, fio->ft_nob);
+ RETURN(0);
}
+EXPORT_SYMBOL(osc_io_fault_start);
+
-static int osc_setattr_upcall(void *a, int rc)
+static int osc_async_upcall(void *a, int rc)
{
- struct osc_setattr_cbargs *args = a;
+ struct osc_async_cbargs *args = a;
args->opc_rc = rc;
- cfs_complete(&args->opc_sync);
+ complete(&args->opc_sync);
return 0;
}
-/* Disable osc_trunc_check() because it is naturally race between read and
- * truncate. See bug 20645 for details.
- */
-#if 0 && defined(__KERNEL__)
/**
* Checks that there are no pages being written in the extent being truncated.
*/
+static int trunc_check_cb(const struct lu_env *env, struct cl_io *io,
+ struct osc_page *ops , void *cbdata)
+{
+ struct cl_page *page = ops->ops_cl.cpl_page;
+ struct osc_async_page *oap;
+ __u64 start = *(__u64 *)cbdata;
+
+ oap = &ops->ops_oap;
+ if (oap->oap_cmd & OBD_BRW_WRITE &&
+ !list_empty(&oap->oap_pending_item))
+ CL_PAGE_DEBUG(D_ERROR, env, page, "exists %llu/%s.\n",
+ start, current->comm);
+
+ if (PageLocked(page->cp_vmpage))
+ CDEBUG(D_CACHE, "page %p index %lu locked for %d.\n",
+ ops, osc_index(ops), oap->oap_cmd & OBD_BRW_RWMASK);
+
+ return CLP_GANG_OKAY;
+}
+
static void osc_trunc_check(const struct lu_env *env, struct cl_io *io,
- struct osc_io *oio, size_t size)
+ struct osc_io *oio, __u64 size)
{
- struct osc_page *cp;
- struct osc_object *obj;
- struct cl_object *clob;
- struct cl_page *page;
- struct cl_page_list *list;
- int partial;
- pgoff_t start;
+ struct cl_object *clob;
+ int partial;
+ pgoff_t start;
clob = oio->oi_cl.cis_obj;
- obj = cl2osc(clob);
start = cl_index(clob, size);
partial = cl_offset(clob, start) < size;
- list = &osc_env_info(env)->oti_plist;
/*
* Complain if there are pages in the truncated region.
- *
- * XXX this is quite expensive check.
*/
- cl_page_list_init(list);
- cl_page_gang_lookup(env, clob, io, start + partial, CL_PAGE_EOF, list, 0);
-
- cl_page_list_for_each(page, list)
- CL_PAGE_DEBUG(D_ERROR, env, page, "exists %lu\n", start);
-
- cl_page_list_disown(env, io, list);
- cl_page_list_fini(env, list);
-
- cfs_spin_lock(&obj->oo_seatbelt);
- cfs_list_for_each_entry(cp, &obj->oo_inflight[CRT_WRITE],
- ops_inflight) {
- page = cp->ops_cl.cpl_page;
- if (page->cp_index >= start + partial) {
- cfs_task_t *submitter;
-
- submitter = cp->ops_submitter;
- /*
- * XXX Linux specific debugging stuff.
- */
- CL_PAGE_DEBUG(D_ERROR, env, page, "%s/%i %lu\n",
- submitter->comm, submitter->pid, start);
- libcfs_debug_dumpstack(submitter);
- }
- }
- cfs_spin_unlock(&obj->oo_seatbelt);
+ osc_page_gang_lookup(env, io, cl2osc(clob),
+ start + partial, CL_PAGE_EOF,
+ trunc_check_cb, (void *)&size);
}
-#else /* __KERNEL__ */
-# define osc_trunc_check(env, io, oio, size) do {;} while (0)
-#endif
static int osc_io_setattr_start(const struct lu_env *env,
const struct cl_io_slice *slice)
struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
struct obdo *oa = &oio->oi_oa;
- struct osc_setattr_cbargs *cbargs = &oio->oi_setattr_cbarg;
- loff_t size = io->u.ci_setattr.sa_attr.lvb_size;
- unsigned int ia_valid = io->u.ci_setattr.sa_valid;
- int result = 0;
- struct obd_info oinfo = { { { 0 } } };
-
- if (ia_valid & ATTR_SIZE)
- osc_trunc_check(env, io, oio, size);
-
- if (oio->oi_lockless == 0) {
- cl_object_attr_lock(obj);
- result = cl_object_attr_get(env, obj, attr);
- if (result == 0) {
- unsigned int cl_valid = 0;
-
- if (ia_valid & ATTR_SIZE) {
- attr->cat_size = attr->cat_kms = size;
- cl_valid = (CAT_SIZE | CAT_KMS);
- }
- if (ia_valid & ATTR_MTIME_SET) {
- attr->cat_mtime = io->u.ci_setattr.sa_attr.lvb_mtime;
- cl_valid |= CAT_MTIME;
- }
- if (ia_valid & ATTR_ATIME_SET) {
- attr->cat_atime = io->u.ci_setattr.sa_attr.lvb_atime;
- cl_valid |= CAT_ATIME;
- }
- if (ia_valid & ATTR_CTIME_SET) {
- attr->cat_ctime = io->u.ci_setattr.sa_attr.lvb_ctime;
- cl_valid |= CAT_CTIME;
- }
- result = cl_object_attr_set(env, obj, attr, cl_valid);
- }
- cl_object_attr_unlock(obj);
- }
- memset(oa, 0, sizeof(*oa));
- if (result == 0) {
- oa->o_id = loi->loi_id;
- oa->o_seq = loi->loi_seq;
- oa->o_mtime = attr->cat_mtime;
- oa->o_atime = attr->cat_atime;
- oa->o_ctime = attr->cat_ctime;
- oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLATIME |
- OBD_MD_FLCTIME | OBD_MD_FLMTIME;
- if (ia_valid & ATTR_SIZE) {
- oa->o_size = size;
- oa->o_blocks = OBD_OBJECT_EOF;
- oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
-
- if (oio->oi_lockless) {
- oa->o_flags = OBD_FL_SRVLOCK;
- oa->o_valid |= OBD_MD_FLFLAGS;
- }
- } else {
- LASSERT(oio->oi_lockless == 0);
- }
-
- oinfo.oi_oa = oa;
- oinfo.oi_capa = io->u.ci_setattr.sa_capa;
- cfs_init_completion(&cbargs->opc_sync);
-
- if (ia_valid & ATTR_SIZE)
- result = osc_punch_base(osc_export(cl2osc(obj)),
- &oinfo, osc_setattr_upcall,
- cbargs, PTLRPCD_SET);
- else
- result = osc_setattr_async_base(osc_export(cl2osc(obj)),
- &oinfo, NULL,
- osc_setattr_upcall,
- cbargs, PTLRPCD_SET);
- }
- return result;
+ struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
+ __u64 size = io->u.ci_setattr.sa_attr.lvb_size;
+ unsigned int ia_avalid = io->u.ci_setattr.sa_avalid;
+ enum op_xvalid ia_xvalid = io->u.ci_setattr.sa_xvalid;
+ int result = 0;
+
+ ENTRY;
+ /* truncate cache dirty pages first */
+ if (cl_io_is_trunc(io))
+ result = osc_cache_truncate_start(env, cl2osc(obj), size,
+ &oio->oi_trunc);
+
+ if (result == 0 && oio->oi_lockless == 0) {
+ cl_object_attr_lock(obj);
+ result = cl_object_attr_get(env, obj, attr);
+ if (result == 0) {
+ struct ost_lvb *lvb = &io->u.ci_setattr.sa_attr;
+ unsigned int cl_valid = 0;
+
+ if (ia_avalid & ATTR_SIZE) {
+ attr->cat_size = size;
+ attr->cat_kms = size;
+ cl_valid = (CAT_SIZE | CAT_KMS);
+ }
+ if (ia_avalid & ATTR_MTIME_SET) {
+ attr->cat_mtime = lvb->lvb_mtime;
+ cl_valid |= CAT_MTIME;
+ }
+ if (ia_avalid & ATTR_ATIME_SET) {
+ attr->cat_atime = lvb->lvb_atime;
+ cl_valid |= CAT_ATIME;
+ }
+ if (ia_xvalid & OP_XVALID_CTIME_SET) {
+ attr->cat_ctime = lvb->lvb_ctime;
+ cl_valid |= CAT_CTIME;
+ }
+ result = cl_object_attr_update(env, obj, attr,
+ cl_valid);
+ }
+ cl_object_attr_unlock(obj);
+ }
+ memset(oa, 0, sizeof(*oa));
+ if (result == 0) {
+ oa->o_oi = loi->loi_oi;
+ obdo_set_parent_fid(oa, io->u.ci_setattr.sa_parent_fid);
+ oa->o_stripe_idx = io->u.ci_setattr.sa_stripe_index;
+ oa->o_layout = io->u.ci_setattr.sa_layout;
+ oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP |
+ OBD_MD_FLOSTLAYOUT;
+ if (ia_avalid & ATTR_CTIME) {
+ oa->o_valid |= OBD_MD_FLCTIME;
+ oa->o_ctime = attr->cat_ctime;
+ }
+ if (ia_avalid & ATTR_ATIME) {
+ oa->o_valid |= OBD_MD_FLATIME;
+ oa->o_atime = attr->cat_atime;
+ }
+ if (ia_avalid & ATTR_MTIME) {
+ oa->o_valid |= OBD_MD_FLMTIME;
+ oa->o_mtime = attr->cat_mtime;
+ }
+ if (ia_avalid & ATTR_SIZE) {
+ oa->o_size = size;
+ oa->o_blocks = OBD_OBJECT_EOF;
+ oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
+
+ if (oio->oi_lockless) {
+ oa->o_flags = OBD_FL_SRVLOCK;
+ oa->o_valid |= OBD_MD_FLFLAGS;
+ }
+
+ if (io->ci_layout_version > 0) {
+ /* verify layout version */
+ oa->o_valid |= OBD_MD_LAYOUT_VERSION;
+ oa->o_layout_version = io->ci_layout_version;
+ }
+ } else {
+ LASSERT(oio->oi_lockless == 0);
+ }
+
+ if (ia_xvalid & OP_XVALID_FLAGS) {
+ oa->o_flags = io->u.ci_setattr.sa_attr_flags;
+ oa->o_valid |= OBD_MD_FLFLAGS;
+ }
+
+ init_completion(&cbargs->opc_sync);
+
+ if (ia_avalid & ATTR_SIZE)
+ result = osc_punch_send(osc_export(cl2osc(obj)),
+ oa, osc_async_upcall, cbargs);
+ else
+ result = osc_setattr_async(osc_export(cl2osc(obj)),
+ oa, osc_async_upcall,
+ cbargs, PTLRPCD_SET);
+
+ cbargs->opc_rpc_sent = result == 0;
+ }
+
+ RETURN(result);
}
-static void osc_io_setattr_end(const struct lu_env *env,
- const struct cl_io_slice *slice)
+void osc_io_setattr_end(const struct lu_env *env,
+ const struct cl_io_slice *slice)
{
- struct cl_io *io = slice->cis_io;
- struct osc_io *oio = cl2osc_io(env, slice);
- struct osc_setattr_cbargs *cbargs = &oio->oi_setattr_cbarg;
- int result;
+ struct cl_io *io = slice->cis_io;
+ struct osc_io *oio = cl2osc_io(env, slice);
+ struct cl_object *obj = slice->cis_obj;
+ struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
+ struct cl_attr *attr = &osc_env_info(env)->oti_attr;
+ struct obdo *oa = &oio->oi_oa;
+ unsigned int cl_valid = 0;
+ int result = 0;
+
+ if (cbargs->opc_rpc_sent) {
+ wait_for_completion(&cbargs->opc_sync);
+ result = io->ci_result = cbargs->opc_rc;
+ }
+
+ if (result == 0) {
+ if (oio->oi_lockless) {
+ /* lockless truncate */
+ struct osc_device *osd = lu2osc_dev(obj->co_lu.lo_dev);
+
+ LASSERT(cl_io_is_trunc(io));
+ /* XXX: Need a lock. */
+ osd->od_stats.os_lockless_truncates++;
+ }
+ }
+
+ if (cl_io_is_trunc(io)) {
+ __u64 size = io->u.ci_setattr.sa_attr.lvb_size;
+ cl_object_attr_lock(obj);
+ if (oa->o_valid & OBD_MD_FLBLOCKS) {
+ attr->cat_blocks = oa->o_blocks;
+ cl_valid |= CAT_BLOCKS;
+ }
+
+ cl_object_attr_update(env, obj, attr, cl_valid);
+ cl_object_attr_unlock(obj);
+ osc_trunc_check(env, io, oio, size);
+ osc_cache_truncate_end(env, oio->oi_trunc);
+ oio->oi_trunc = NULL;
+ }
+}
+EXPORT_SYMBOL(osc_io_setattr_end);
- cfs_wait_for_completion(&cbargs->opc_sync);
+struct osc_data_version_args {
+ struct osc_io *dva_oio;
+};
- result = io->ci_result = cbargs->opc_rc;
- if (result == 0) {
- struct cl_object *obj = slice->cis_obj;
- if (oio->oi_lockless) {
- /* lockless truncate */
- struct osc_device *osd = lu2osc_dev(obj->co_lu.lo_dev);
+static int
+osc_data_version_interpret(const struct lu_env *env, struct ptlrpc_request *req,
+ void *args, int rc)
+{
+ struct osc_data_version_args *dva = args;
+ struct osc_io *oio = dva->dva_oio;
+ const struct ost_body *body;
+
+ ENTRY;
+ if (rc < 0)
+ GOTO(out, rc);
+
+ body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
+ if (body == NULL)
+ GOTO(out, rc = -EPROTO);
+
+ lustre_get_wire_obdo(&req->rq_import->imp_connect_data, &oio->oi_oa,
+ &body->oa);
+ EXIT;
+out:
+ oio->oi_cbarg.opc_rc = rc;
+ complete(&oio->oi_cbarg.opc_sync);
+
+ return 0;
+}
- LASSERT(cl_io_is_trunc(io));
- /* XXX: Need a lock. */
- osd->od_stats.os_lockless_truncates++;
- }
- }
+static int osc_io_data_version_start(const struct lu_env *env,
+ const struct cl_io_slice *slice)
+{
+ struct cl_data_version_io *dv = &slice->cis_io->u.ci_data_version;
+ struct osc_io *oio = cl2osc_io(env, slice);
+ struct obdo *oa = &oio->oi_oa;
+ struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
+ struct osc_object *obj = cl2osc(slice->cis_obj);
+ struct lov_oinfo *loi = obj->oo_oinfo;
+ struct obd_export *exp = osc_export(obj);
+ struct ptlrpc_request *req;
+ struct ost_body *body;
+ struct osc_data_version_args *dva;
+ int rc;
+
+ ENTRY;
+ memset(oa, 0, sizeof(*oa));
+ oa->o_oi = loi->loi_oi;
+ oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
+
+ if (dv->dv_flags & (LL_DV_RD_FLUSH | LL_DV_WR_FLUSH)) {
+ oa->o_valid |= OBD_MD_FLFLAGS;
+ oa->o_flags |= OBD_FL_SRVLOCK;
+ if (dv->dv_flags & LL_DV_WR_FLUSH)
+ oa->o_flags |= OBD_FL_FLUSH;
+ }
+
+ init_completion(&cbargs->opc_sync);
+
+ req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
+ if (req == NULL)
+ RETURN(-ENOMEM);
+
+ rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
+ if (rc < 0) {
+ ptlrpc_request_free(req);
+ RETURN(rc);
+ }
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
+ lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
+
+ ptlrpc_request_set_replen(req);
+ req->rq_interpret_reply = osc_data_version_interpret;
+ dva = ptlrpc_req_async_args(dva, req);
+ dva->dva_oio = oio;
+
+ ptlrpcd_add_req(req);
+
+ RETURN(0);
}
-static int osc_io_read_start(const struct lu_env *env,
- const struct cl_io_slice *slice)
+static void osc_io_data_version_end(const struct lu_env *env,
+ const struct cl_io_slice *slice)
{
- struct osc_io *oio = cl2osc_io(env, slice);
- struct cl_object *obj = slice->cis_obj;
- struct cl_attr *attr = &osc_env_info(env)->oti_attr;
- int result = 0;
- ENTRY;
-
- if (oio->oi_lockless == 0) {
- cl_object_attr_lock(obj);
- result = cl_object_attr_get(env, obj, attr);
- if (result == 0) {
- attr->cat_atime = LTIME_S(CFS_CURRENT_TIME);
- result = cl_object_attr_set(env, obj, attr,
- CAT_ATIME);
- }
- cl_object_attr_unlock(obj);
- }
- RETURN(result);
+ struct cl_data_version_io *dv = &slice->cis_io->u.ci_data_version;
+ struct osc_io *oio = cl2osc_io(env, slice);
+ struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
+
+ ENTRY;
+ wait_for_completion(&cbargs->opc_sync);
+
+ if (cbargs->opc_rc != 0) {
+ slice->cis_io->ci_result = cbargs->opc_rc;
+ } else {
+ slice->cis_io->ci_result = 0;
+ if (!(oio->oi_oa.o_valid &
+ (OBD_MD_LAYOUT_VERSION | OBD_MD_FLDATAVERSION)))
+ slice->cis_io->ci_result = -ENOTSUPP;
+
+ if (oio->oi_oa.o_valid & OBD_MD_LAYOUT_VERSION)
+ dv->dv_layout_version = oio->oi_oa.o_layout_version;
+ if (oio->oi_oa.o_valid & OBD_MD_FLDATAVERSION)
+ dv->dv_data_version = oio->oi_oa.o_data_version;
+ }
+
+ EXIT;
}
-static int osc_io_write_start(const struct lu_env *env,
- const struct cl_io_slice *slice)
+int osc_io_read_start(const struct lu_env *env,
+ const struct cl_io_slice *slice)
{
- struct osc_io *oio = cl2osc_io(env, slice);
- struct cl_object *obj = slice->cis_obj;
- struct cl_attr *attr = &osc_env_info(env)->oti_attr;
- int result = 0;
- ENTRY;
-
- if (oio->oi_lockless == 0) {
- cl_object_attr_lock(obj);
- result = cl_object_attr_get(env, obj, attr);
- if (result == 0) {
- attr->cat_mtime = attr->cat_ctime =
- LTIME_S(CFS_CURRENT_TIME);
- result = cl_object_attr_set(env, obj, attr,
- CAT_MTIME | CAT_CTIME);
- }
- cl_object_attr_unlock(obj);
- }
- RETURN(result);
+ struct cl_object *obj = slice->cis_obj;
+ struct cl_attr *attr = &osc_env_info(env)->oti_attr;
+ int rc = 0;
+ ENTRY;
+
+ if (!slice->cis_io->ci_noatime) {
+ cl_object_attr_lock(obj);
+ attr->cat_atime = ktime_get_real_seconds();
+ rc = cl_object_attr_update(env, obj, attr, CAT_ATIME);
+ cl_object_attr_unlock(obj);
+ }
+
+ RETURN(rc);
}
+EXPORT_SYMBOL(osc_io_read_start);
-static const struct cl_io_operations osc_io_ops = {
- .op = {
- [CIT_READ] = {
- .cio_start = osc_io_read_start,
- .cio_fini = osc_io_fini
- },
- [CIT_WRITE] = {
- .cio_start = osc_io_write_start,
- .cio_fini = osc_io_fini
- },
- [CIT_SETATTR] = {
- .cio_start = osc_io_setattr_start,
- .cio_end = osc_io_setattr_end
- },
- [CIT_FAULT] = {
- .cio_fini = osc_io_fini,
- .cio_start = osc_io_fault_start
- },
- [CIT_MISC] = {
- .cio_fini = osc_io_fini
- }
- },
- .req_op = {
- [CRT_READ] = {
- .cio_submit = osc_io_submit
- },
- [CRT_WRITE] = {
- .cio_submit = osc_io_submit
- }
- },
- .cio_prepare_write = osc_io_prepare_write,
- .cio_commit_write = osc_io_commit_write
-};
+int osc_io_write_start(const struct lu_env *env,
+ const struct cl_io_slice *slice)
+{
+ struct cl_object *obj = slice->cis_obj;
+ struct cl_attr *attr = &osc_env_info(env)->oti_attr;
+ int rc = 0;
+ ENTRY;
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_SETTIME, 1);
+ cl_object_attr_lock(obj);
+ attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
+ rc = cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
+ cl_object_attr_unlock(obj);
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(osc_io_write_start);
-/*****************************************************************************
- *
- * Transfer operations.
- *
- */
+int osc_fsync_ost(const struct lu_env *env, struct osc_object *obj,
+ struct cl_fsync_io *fio)
+{
+ struct osc_io *oio = osc_env_io(env);
+ struct obdo *oa = &oio->oi_oa;
+ struct lov_oinfo *loi = obj->oo_oinfo;
+ struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
+ int rc = 0;
+ ENTRY;
+
+ memset(oa, 0, sizeof(*oa));
+ oa->o_oi = loi->loi_oi;
+ oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
+
+ /* reload size abd blocks for start and end of sync range */
+ oa->o_size = fio->fi_start;
+ oa->o_blocks = fio->fi_end;
+ oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
+
+ obdo_set_parent_fid(oa, fio->fi_fid);
+
+ init_completion(&cbargs->opc_sync);
-static int osc_req_prep(const struct lu_env *env,
- const struct cl_req_slice *slice)
+ rc = osc_sync_base(obj, oa, osc_async_upcall, cbargs, PTLRPCD_SET);
+ RETURN(rc);
+}
+EXPORT_SYMBOL(osc_fsync_ost);
+
+int osc_io_fsync_start(const struct lu_env *env,
+ const struct cl_io_slice *slice)
{
- return 0;
+ struct cl_io *io = slice->cis_io;
+ struct cl_fsync_io *fio = &io->u.ci_fsync;
+ struct cl_object *obj = slice->cis_obj;
+ struct osc_object *osc = cl2osc(obj);
+ pgoff_t start = cl_index(obj, fio->fi_start);
+ pgoff_t end = cl_index(obj, fio->fi_end);
+ int result = 0;
+ ENTRY;
+
+ if (fio->fi_end == OBD_OBJECT_EOF)
+ end = CL_PAGE_EOF;
+
+ result = osc_cache_writeback_range(env, osc, start, end, 0,
+ fio->fi_mode == CL_FSYNC_DISCARD);
+ if (result > 0) {
+ fio->fi_nr_written += result;
+ result = 0;
+ }
+ if (fio->fi_mode == CL_FSYNC_ALL) {
+ int rc;
+
+ /* we have to wait for writeback to finish before we can
+ * send OST_SYNC RPC. This is bad because it causes extents
+ * to be written osc by osc. However, we usually start
+ * writeback before CL_FSYNC_ALL so this won't have any real
+ * problem. */
+ rc = osc_cache_wait_range(env, osc, start, end);
+ if (result == 0)
+ result = rc;
+ rc = osc_fsync_ost(env, osc, fio);
+ if (result == 0)
+ result = rc;
+ }
+
+ RETURN(result);
}
-static void osc_req_completion(const struct lu_env *env,
- const struct cl_req_slice *slice, int ioret)
+void osc_io_fsync_end(const struct lu_env *env,
+ const struct cl_io_slice *slice)
{
- struct osc_req *or;
+ struct cl_fsync_io *fio = &slice->cis_io->u.ci_fsync;
+ struct cl_object *obj = slice->cis_obj;
+ pgoff_t start = cl_index(obj, fio->fi_start);
+ pgoff_t end = cl_index(obj, fio->fi_end);
+ int result = 0;
+
+ if (fio->fi_mode == CL_FSYNC_LOCAL) {
+ result = osc_cache_wait_range(env, cl2osc(obj), start, end);
+ } else if (fio->fi_mode == CL_FSYNC_ALL) {
+ struct osc_io *oio = cl2osc_io(env, slice);
+ struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
+
+ wait_for_completion(&cbargs->opc_sync);
+ if (result == 0)
+ result = cbargs->opc_rc;
+ }
+ slice->cis_io->ci_result = result;
+}
+EXPORT_SYMBOL(osc_io_fsync_end);
- or = cl2osc_req(slice);
- OBD_SLAB_FREE_PTR(or, osc_req_kmem);
+static int osc_io_ladvise_start(const struct lu_env *env,
+ const struct cl_io_slice *slice)
+{
+ int result = 0;
+ struct cl_io *io = slice->cis_io;
+ struct osc_io *oio = cl2osc_io(env, slice);
+ struct cl_object *obj = slice->cis_obj;
+ struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
+ struct cl_ladvise_io *lio = &io->u.ci_ladvise;
+ struct obdo *oa = &oio->oi_oa;
+ struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
+ struct lu_ladvise *ladvise;
+ struct ladvise_hdr *ladvise_hdr;
+ int buf_size;
+ int num_advise = 1;
+ ENTRY;
+
+ /* TODO: add multiple ladvise support in CLIO */
+ buf_size = offsetof(typeof(*ladvise_hdr), lah_advise[num_advise]);
+ if (osc_env_info(env)->oti_ladvise_buf.lb_len < buf_size)
+ lu_buf_realloc(&osc_env_info(env)->oti_ladvise_buf, buf_size);
+
+ ladvise_hdr = osc_env_info(env)->oti_ladvise_buf.lb_buf;
+ if (ladvise_hdr == NULL)
+ RETURN(-ENOMEM);
+
+ memset(ladvise_hdr, 0, buf_size);
+ ladvise_hdr->lah_magic = LADVISE_MAGIC;
+ ladvise_hdr->lah_count = num_advise;
+ ladvise_hdr->lah_flags = lio->li_flags;
+
+ memset(oa, 0, sizeof(*oa));
+ oa->o_oi = loi->loi_oi;
+ oa->o_valid = OBD_MD_FLID;
+ obdo_set_parent_fid(oa, lio->li_fid);
+
+ ladvise = ladvise_hdr->lah_advise;
+ ladvise->lla_start = lio->li_start;
+ ladvise->lla_end = lio->li_end;
+ ladvise->lla_advice = lio->li_advice;
+
+ if (lio->li_flags & LF_ASYNC) {
+ result = osc_ladvise_base(osc_export(cl2osc(obj)), oa,
+ ladvise_hdr, NULL, NULL, NULL);
+ } else {
+ init_completion(&cbargs->opc_sync);
+ result = osc_ladvise_base(osc_export(cl2osc(obj)), oa,
+ ladvise_hdr, osc_async_upcall,
+ cbargs, PTLRPCD_SET);
+ cbargs->opc_rpc_sent = result == 0;
+ }
+ RETURN(result);
}
-/**
- * Implementation of struct cl_req_operations::cro_attr_set() for osc
- * layer. osc is responsible for struct obdo::o_id and struct obdo::o_seq
- * fields.
- */
-static void osc_req_attr_set(const struct lu_env *env,
- const struct cl_req_slice *slice,
- const struct cl_object *obj,
- struct cl_req_attr *attr, obd_valid flags)
+static void osc_io_ladvise_end(const struct lu_env *env,
+ const struct cl_io_slice *slice)
{
- struct lov_oinfo *oinfo;
- struct cl_req *clerq;
- struct cl_page *apage; /* _some_ page in @clerq */
- struct cl_lock *lock; /* _some_ lock protecting @apage */
- struct osc_lock *olck;
- struct osc_page *opg;
- struct obdo *oa;
-
- oa = attr->cra_oa;
- oinfo = cl2osc(obj)->oo_oinfo;
- if (flags & OBD_MD_FLID) {
- oa->o_id = oinfo->loi_id;
- oa->o_valid |= OBD_MD_FLID;
- }
- if (flags & OBD_MD_FLGROUP) {
- oa->o_seq = oinfo->loi_seq;
- oa->o_valid |= OBD_MD_FLGROUP;
- }
- if (flags & OBD_MD_FLHANDLE) {
- clerq = slice->crs_req;
- LASSERT(!cfs_list_empty(&clerq->crq_pages));
- apage = container_of(clerq->crq_pages.next,
- struct cl_page, cp_flight);
- opg = osc_cl_page_osc(apage);
- apage = opg->ops_cl.cpl_page; /* now apage is a sub-page */
- lock = cl_lock_at_page(env, apage->cp_obj, apage, NULL, 1, 1);
- if (lock == NULL) {
- struct cl_object_header *head;
- struct cl_lock *scan;
-
- head = cl_object_header(apage->cp_obj);
- cfs_list_for_each_entry(scan, &head->coh_locks,
- cll_linkage)
- CL_LOCK_DEBUG(D_ERROR, env, scan,
- "no cover page!\n");
- CL_PAGE_DEBUG(D_ERROR, env, apage,
- "dump uncover page!\n");
- libcfs_debug_dumpstack(NULL);
- LBUG();
- }
+ struct cl_io *io = slice->cis_io;
+ struct osc_io *oio = cl2osc_io(env, slice);
+ struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
+ int result = 0;
+ struct cl_ladvise_io *lio = &io->u.ci_ladvise;
+
+ if ((!(lio->li_flags & LF_ASYNC)) && cbargs->opc_rpc_sent) {
+ wait_for_completion(&cbargs->opc_sync);
+ result = cbargs->opc_rc;
+ }
+ slice->cis_io->ci_result = result;
+}
- olck = osc_lock_at(lock);
- LASSERT(olck != NULL);
- LASSERT(ergo(opg->ops_srvlock, olck->ols_lock == NULL));
- /* check for lockless io. */
- if (olck->ols_lock != NULL) {
- oa->o_handle = olck->ols_lock->l_remote_handle;
- oa->o_valid |= OBD_MD_FLHANDLE;
- }
- cl_lock_put(env, lock);
- }
+void osc_io_end(const struct lu_env *env, const struct cl_io_slice *slice)
+{
+ struct osc_io *oio = cl2osc_io(env, slice);
+
+ if (oio->oi_active) {
+ osc_extent_release(env, oio->oi_active);
+ oio->oi_active = NULL;
+ }
}
+EXPORT_SYMBOL(osc_io_end);
-static const struct cl_req_operations osc_req_ops = {
- .cro_prep = osc_req_prep,
- .cro_attr_set = osc_req_attr_set,
- .cro_completion = osc_req_completion
+static const struct cl_io_operations osc_io_ops = {
+ .op = {
+ [CIT_READ] = {
+ .cio_iter_init = osc_io_rw_iter_init,
+ .cio_iter_fini = osc_io_rw_iter_fini,
+ .cio_start = osc_io_read_start,
+ .cio_fini = osc_io_fini
+ },
+ [CIT_WRITE] = {
+ .cio_iter_init = osc_io_rw_iter_init,
+ .cio_iter_fini = osc_io_rw_iter_fini,
+ .cio_start = osc_io_write_start,
+ .cio_end = osc_io_end,
+ .cio_fini = osc_io_fini
+ },
+ [CIT_SETATTR] = {
+ .cio_iter_init = osc_io_iter_init,
+ .cio_iter_fini = osc_io_iter_fini,
+ .cio_start = osc_io_setattr_start,
+ .cio_end = osc_io_setattr_end
+ },
+ [CIT_DATA_VERSION] = {
+ .cio_start = osc_io_data_version_start,
+ .cio_end = osc_io_data_version_end,
+ },
+ [CIT_FAULT] = {
+ .cio_iter_init = osc_io_iter_init,
+ .cio_iter_fini = osc_io_iter_fini,
+ .cio_start = osc_io_fault_start,
+ .cio_end = osc_io_end,
+ .cio_fini = osc_io_fini
+ },
+ [CIT_FSYNC] = {
+ .cio_start = osc_io_fsync_start,
+ .cio_end = osc_io_fsync_end,
+ .cio_fini = osc_io_fini
+ },
+ [CIT_LADVISE] = {
+ .cio_start = osc_io_ladvise_start,
+ .cio_end = osc_io_ladvise_end,
+ .cio_fini = osc_io_fini
+ },
+ [CIT_MISC] = {
+ .cio_fini = osc_io_fini
+ }
+ },
+ .cio_read_ahead = osc_io_read_ahead,
+ .cio_submit = osc_io_submit,
+ .cio_commit_async = osc_io_commit_async
};
+/*****************************************************************************
+ *
+ * Transfer operations.
+ *
+ */
int osc_io_init(const struct lu_env *env,
struct cl_object *obj, struct cl_io *io)
return 0;
}
-int osc_req_init(const struct lu_env *env, struct cl_device *dev,
- struct cl_req *req)
-{
- struct osc_req *or;
- int result;
-
- OBD_SLAB_ALLOC_PTR_GFP(or, osc_req_kmem, CFS_ALLOC_IO);
- if (or != NULL) {
- cl_req_slice_add(req, &or->or_cl, dev, &osc_req_ops);
- result = 0;
- } else
- result = -ENOMEM;
- return result;
-}
-
/** @} osc */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff